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1
Fidiyawati, E., E. Latifah, A. Krismawati, et al. "Effectivity of inorganic fertilizer NPK (15-15-6) to growth and yield of lowland rice (Oryza sativa L.) on alfisol soil." IOP Conference Series: Earth and Environmental Science 980, no. 1 (2022): 012014. http://dx.doi.org/10.1088/1755-1315/980/1/012014.
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Abstract This study was conducted to determine the effectiveness of NPK (15-15-6) fertilizer on the growth and yield of lowland rice. It was carried out on irrigated rice fields in the second season (March-June), on Alfisol soil (25 m asl). RCBD experimental design with 8 doses of fertilizer treatment and 3 replications. Treatment: a) without fertilizer, b) local recommendation of NPK (15-15-15) 300 + Urea 200 kg/ha, c) NPK (15-15-6) 200 + Urea 0 kg/ha, d) NPK (15-15-6) 300 + Urea 0 kg/ha, e) NPK (15-15-6) 400 + Urea 0 kg/ha, f) NPK (15-15-6) 200 + Urea 200 kg/ha, g) NPK (15-15-6) 300 + Urea 200 kg/ha, and h) NPK (15-15-6) 400 + Urea 100 kg/ha. The results showed that the application of NPK (15-15-6) 300 + 200 urea kg/ha had a significant effect on plant height, productive tillers and yield. The yield was 7,448 t/ha and the RAE (Relative Agronomic Effectiveness) value was 106.46, while the recommended fertilizer yield was 7.20 t/ha and the RAE value was 100. NPK fertilizer (15-15-6) dose of 300 + 200 Urea kg/ha can recomedate as an alternative NPK fertilizer in lowland rice.
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Sukristiyonubowo, Ibrahim Adamy Sipahutar, and Ishak Achmad. "The effect of NPK Compound (6:16:7) on Chemical Soil Properties of Thapic Epiaquands and Cucumber Yield." JOURNAL OF TROPICAL SOILS 14, no. 3 (2009): 229. http://dx.doi.org/10.5400/jts.2009.v14i3.229-238.
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The effect of NPK compound (6:16:7) on chemical soil properties of Thapic Epiaquands, growth and yield of cucumber (Cucumis sativus) has been studied in Punthuk Rejo Village, Karanganyar District. The aims were to study the influence of NPK fertiliser on chemical soil properties, growth and yield of cucumber. The treatments were arranged in Randomized Complete Block Design and replicated three times. The treatments were rate of NPK fertilisers including control, NPK standard, 150 kg NPK compound (6:16:7) ha-1, 300 kg NPK compound (6:16:7) ha-1, 450 kg NPK compound (6:16:7) ha-1, 600 kg NPK compound (6:16:7) ha-1, 300 kg NPK compound (6:16:7) ha-1 + ¼ NPK standard, and 300 kg NPK compound (6:16:7) ha-1 + ½ NPK standard. The NPK standard originated from single fertiliser, namely urea, SP-36 and KCl, while the NPK compound was Agrotop, containing 6.15% N, 16.23% P2O5 and 6.87% K2O following named NPK compound (6:16:7). The rate of NPK standard was 100 kg urea ha-1, 100 kg SP-36 ha-1 and 200 kg KCl ha-1 referring to the local recommended fertiliser rate. Application of NPK, both NPK (6:16:7) and NPK Standard, improved the chemical soil properties, namely N, P and K total as well available P. So far, application of 300 kg NPK compound ha-1 significantly increased the number of cucumber fruits and cucumber yield. Compared to the control, the increases were 13% and 44% for the number of cucumber fruits and cucumber yield, respectively. So far, combination of NPK compound (6:16:7) at the rate of 300 kg ha-1 with half recommended rate of NPK standard yielded a significant effect on both the number of cucumber fruits and weight of cucumber. These improvements were comparable to the NPK standard under fully recommended rate. The relative agronomic effectiveness value of combination of NPK (6:16:7) at the rate of 300 kg ha-1 with half recommended rate of NPK standard were about 100%, similar with the value of NPK standard. The economic analysis indicated that NPK standard with recommended application rate and combination of NPK Agrotop at the rate of 300 kg ha-1 with half recommended rate of NPK standard gave high benefit, B/C ratio and IBCR. The B/C ratio and IBCR were higher than one.
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Rantung, Rantung, Jeanne M. Paulus, Paula C. H. Supit, et al. "The Effects of Substituting Straw Compost for NPK Fertilizer On Field Rice Growth and Yield Using The SRI (System of Rice Intensification) Method." Jurnal Agroekoteknologi Terapan 5, no. 1 (2024): 52–57. http://dx.doi.org/10.35791/jat.v5i1.54192.
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With an agroecological philosophy, the SRI (System of Rice Intensification) technique is a rice production technology approach that prioritizes soil, plant, and water management through local expertise and group empowerment based on environmentally beneficial activities. The purpose of this study is to investigate lowland rice growth and yield by using composted straw instead of NPK fertilizer. Implemented in Tara-Tara II village, West Tomohon sub-district for 5 (five) months with one factor treatment, namely the ratio of NPK fertilizer dose and straw compost dose: 100% NPK + straw compost 0% straw compost (P0), 75% NPK + 25% straw compost (P1), 50% NPK + 50% straw compost (P2), 25% NPK + 75% straw compost (P3), and 0% NPK + 100% straw compost (P4). The variables observed included: plant height, number of fodder, number of panicles/clumps, weight of 100 harvested dry grains, number of grains/panicles, percentage of smooth grains/clumps and harvested dry grain yield. Substitution of NPK fertilizer with compost straw has no effect on the height of lowland rice plants using the SRI (System of Rice Intensification) method, but does affect the number of productive tillers. The highest number of productive tillers was found in P2 (50% NPK + 50% straw compost), P3 (25% NPK + 75% straw compost) and P4 (0% NPK + 100% straw compost), with an average value of 31, respectively. 27; 28.20 and 27.53 tillers, while treatment P3 (25% NPK + 75% straw compost) and lower values in treatments P0 (100% NPK + 0% straw compost) and P1 (75% NPK + 25% straw compost ) with an average value of 25.83; and 25.67 offspring.
 
 Keywords: System of Rice Intensification (SRI), rice, straw compost.
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Manurung, Ramona, Wiwin Dyah Ully Parwati, and Ryan Firman Syah. "Kombinasi Pupuk Organik Cair dan NPK: Sebagai Booster Pertumbuhan Bibit Kelapa Sawit di Pre Nursery." AGROISTA : Jurnal Agroteknologi 7, no. 2 (2023): 78–86. http://dx.doi.org/10.55180/agi.v7i2.456.
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Liquid organic fertilizer provides nutrients, increases good microorganisms and improves the physical properties of the soil, especially when used in oil palm nurseries. This research was conducted with the aim of determining the effect of providing liquid organic fertilizer and NPK on the growth of oil palm seedlings in the pre-nursery. This research uses a factorial experimental method arranged in a Completely Randomized Design (CRD) consisting of two factors. The first factor is liquid organic fertilizer which consists of 4 levels, namely Control/no fertilizer, 3 ml, 5 ml 8 ml. The second factor is NPK which consists of 4 levels, namely N1: Control/no fertilizer, N2: 1 g/plant, N3: 2 g/plant, N4: 3 g/plant. Each treatment was repeated 5 times. The data obtained were analyzed using Analysis of Variance (anova) with a level of 5%. Data that were significantly different were further tested with DMRT at a level of 5%. The results showed that there was a real interaction between liquid organic fertilizer and NPK on stem diameter. The best growth of oil palm seedlings at a dose of 1 g NPK fertilizer with 8 ml liquid organic fertilizer showed a value of 7.06 mm, a 2 g dose of NPK with a control liquid organic fertilizer showed a value of 7.02 mm, a 2 g dose of NPK and a dose of liquid organic fertilizer 3 ml shows a value of 7.00 mm. Real interaction between liquid organic fertilizer and NPK on crown fresh weight diameter. NPK at a dose of 1 g and POC at a dose of 3 ml showed a value of 6.46 g. Providing liquid organic fertilizer did not have a real effect on oil palm seedlings, while NPK at a dose of 1 g/plant had an effect on oil palm seedlings.
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Novianti, F., S. A. Syaiful, A. Dachlan, and N. Fadhi. "Efficiency of Fertilizing Maize Plants Through the Application of Slow Release NPK Tablet Fertilizer with Biofertilizer." Indonesian Journal of Agricultural Research 6, no. 3 (2024): 223–36. http://dx.doi.org/10.32734/injar.v6i3.13904.
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Inefficiencies in fertilization practices have become a substantial issue within current agricultural techniques. The inappropriate use of fertilizers can negatively impact both crop productivity and soil fertility. The aim of this research is to identify the efficiency of utilizing slow-release NPK tablet fertilizers supplemented with biofertilizers in maize crops. The experimental design incorporated a randomized complete block design (RCBD) consisting of nine combinations of fertilizer dosages between NPK tablet fertilizers and biofertilizers. The efficiency of fertilizer use can be seen from the RAE value of more than 100% shown by the NPK Tablet treatment which requires only one application compared to the recommended fertilizer, urea, and NPK Phonska which requires twice applications. Furthermore, optimization of the application of biofertilizer can be seen in the RSE value of more than 100% shown in the application of LBA biofertilizer together with NPK Tablets so that the application of biofertilizer is considered capable of increasing the efficiency of using inorganic fertilizers such as NPK Tablets.
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Brima, Fathi I. A., and Awad Abusuwar. "Influence of seed rate and NPK fertilizer on yield and quality of Rhodes grass (Chloris gayana L. kunth.)." International Journal of Agricultural and Applied Sciences 1, no. 1 (2020): 80–86. http://dx.doi.org/10.52804/ijaas2020.1116.
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A field experiment was conducted during summer season of 2007 at the Demonstration Farm of the Faculty of Agriculture, University of Khartoum, Shambat, Sudan, to investigate the effect of seed rate and NPK fertilization on yield and quality of Rhodes grass forage (Chloris gayana L. Kunth) cv. Finecut. The treatment consisted of three seed rates (SDR1, SDR2 and SDR3) namely 5, 10 and 15 kg/ha and three NPK fertilizer levels (F0, F1 and F2) namely 0, 120 and 240 kg/ha respectively. NPK fertilizer components were N17 P17 K17. The experiment was laid out in a Factorial CRBD with four replications. The results showed that seed rate significantly increased forage fresh and dry yield. NPK fertilization significantly increased forage fresh and dry yield. Neither seed rate nor NPK fertilization were significantly affected crude protein and fiber content of leaves and stems of Rhodes grass, but the increase in seed rate and fertilizer levels slightly increased crude protein and decreased fiber percentage. Seed rate ×NPK fertilization interaction showed significant effect on crude protein and crude fiber contents. The highest protein percentage obtained under SDR2 (10kg/ha) with highest NPK fertilization level F2 (240 kg/ha), and lowest value obtained under SDR1(5kg/ha) with NPK fertilization F1(120kg/ha) and SDR1(5kg/ha) under control of fertilizer treatment (F0). Regarding crude fiber, highest value obtained under SDR2(10 kg/ha) with NPK fertilization F1 (120kg/ha) and SDR3 (15 kg/ha) under control treatments of fertilization (F0).
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Purwani, Jati, and Nurjaya Nurjaya. "Effectiveness of Inorganic Fertilizer and Biofertilizer Application on Maize Yield and Fertilizer Use Efficiency on Inceptisol from West Java." JOURNAL OF TROPICAL SOILS 25, no. 1 (2020): 11. http://dx.doi.org/10.5400/jts.2020.v25i1.11-20.
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The study about the effectiveness of inorganic fertilizer and bio-fertilizer application on maize yield and fertilizer use efficiency has been carried out in the greenhouse using Inceptisol from Dukuh Village, Cibungbulang District, Bogor Regency. Inorganic fertilizers used were Urea, SP36 and KCl, the biofertilizer used consisted of Azospirillum sp., Azotobacter sp., Bacillus sp., and Lactobacillus sp.. The study was arranged in a Randomized Block Design consisting of seven treatments and six replications. The treatments consisted of various dosages of inorganic fertilizers combined with bio-fertilizer, namely 1) Control (without fertilizer), 2) 100% recommended NPK level, 3) Biofertilizer, 4) 25% recommended NPK level+Biofertilizer, 5) 50% recommended NPK level+Biofertilizer, 6) 75% recommended NPK level + Biofertilizer, 7) 100% recommended NPK level + Biofertilizer. The results showed that the application of inorganic NPK ferttilizers and biofertilizer on maize cultivation on Inceptisol from Dukuh Village, Cibungbulang District, Bogor Regency resulted in an increase of maize yield compared to the recommended level of inorganic fertilizers (100% NPK). The treatment of NPK (50% recommended level)+Biofertilizer resulted in the highest biomass dry weight, yield of corn and value of RAE (Relative Agronomic Effectiveness). The shoot dry weight was 138.09 g pot-1, corn yield was 190.87 g pot-1, and RAE value was 113.44%. The optimum doses of NPK fertilizers were 200 kg Urea ha-1, 60 kg SP-36 ha-1 and 45 kg KCl ha-1 combined with 4 L ha-1 biofertilizer.
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Dirga Sapta Sara, Emma Trinurani Sofyan, and Benny Joy. "Effects of granular organic and inorganic fertilizer combinations on N, P, K uptake and sweet corn yield." International Journal of Science and Research Archive 14, no. 1 (2025): 1936–40. https://doi.org/10.30574/ijsra.2025.14.1.0327.
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Sweet corn is a high-value crop with rich nutritional content. Optimizing crop yield requires proper nutrient management, particularly in the absorption of nitrogen (N), phosphorus (P), and potassium (K). This study evaluates the effects of a combination of granular organic fertilizer (GOF) and inorganic NPK fertilizer on nutrient absorption and sweet corn yield grown on Inceptisol soil. The research was conducted from February to May 2024 at the Experimental Field of Universitas Padjadjaran, using a randomized block design with six treatments, including different combinations of GOF and NPK at varying doses (Control, 1 NPK, ¾ NPK + ½ GOF, ¾ NPK + 1 GOF, ¾ NPK + 1 ½ GOF, 1 NPK + 1 GOF). The results indicated that the combination of GOF and NPK enhanced the absorption of N, P, and K compared to the application of NPK alone. The best treatment was ¾ NPK + 1 ½ GOF, which showed a significant increase in nutrient absorption (52.31 mg plant⁻¹ N, 6.30 mg plant⁻¹ P, and 55.63 mg plant⁻¹ K) as well as the highest yield (23,040 kg ha⁻¹ fresh cob weight).
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Mohammed, Yasir E., Ahmed M. El Naim, Elgailani A. Abdalla, Tarig E. Ahmed, and Omer A. Bakhit. "Effect of NPK Micro-dosses on yield, Oil and Protein of Groundnut." Innovation in Science and Technology 1, no. 4 (2022): 18–24. http://dx.doi.org/10.56397/ist.2022.11.02.
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A field experiment was conducted under rain fed condition for two seasons (2011 and 2012) at two locations in North Kordofan, Sudan at Elobeid Research Station farm and Faris village, to study the effect of NPK micro dose on yield, oil and protein content of six groundnut genotypes with two NPK micro-doses, 0.0 g (control) and 0.6 g per hole. A randomized Complete Block Design with four replications was used. The characters yield and its component, oil % and protein % content were measured. The results of the combined and interaction analysis showed that there were significant (p =0.05) differences were observed for pod yield, hay yield, number of pods per plant, hundred seed weight and maturity, while differences in shelling percentage and harvest index were not significant. The high value of oil content % released by Sodiri variety with NPK treatment and the high value of protein recorded by Gibiesh with NPK treatment. Generally we concluded that the micro doses of NPK improved yield and protein of groundnut.
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Morin, Jacson Victor, and Darma Santi. "STUDI FITOREMEDIASI LOGAM TIMBAL (Pb) DAN KADMIUM (Cd) OLEH TANAMAN KAYAMBANG (Salvinia molesta)." Jurnal Natural 16, no. 2 (2020): 85–95. http://dx.doi.org/10.30862/jn.v16i2.112.
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Study phytoremediation of lead (Pb) and cadmium (Cd) by kayambang plants (Salvinia molesta) has been studied. This study assessed the ability of plants to absorb Pb and Cd which is influenced by the addition of various metal and NPK fertilizer on the medium containing the test solution. Samples of plants were interacted with NPK fertilizer, Pb and Cd. The variations of NPK 1 mg/L, I,5 mg/L, 2,5 mg/L and 10 mg/L and the variations of Pb (100 mg/L, 400 mg/L and 800 mg/L) and cadmium (50 mg/L, 100 mg/L and 200 mg/L). Optimum pH for growing the Kayambang plants (Salvinia molesta) is a range pH of 6-7. Observations were made every 7 days until the day of 35th, by measuring levels of Cd and Pb after the interaction of plants (roots, non-roots and growing media).
 The results showed that the Pb and Cd accumulation are higher at the root compared to non-root (stem and leaf). Effect of NPK fertilizer is very evident in the heavy plant where increasing levels of NPK fertilizer plant, the more heavy weight. The average value of FT in kayambang plants (Salvinia molesta)>1, then the plant can be used as a phytoremediator agent. The highest value FT of Pb is 11.22 and shown on condition [NPK] 10 mg/L, [Pb] 100 mg/L at day of 21th and for highest value FT of Cd is 9.57 and shown on condition [NPK] 10 mg/L, [Cd] 100 mg/L and day of 35th
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Fauziah Marintika, Guluh, Lia Cundari, and Farid Hayu Kurniawan. "PROSES PENGERINGAN NPK BERDASARKAN EVALUASI ROTARY DRYER DAN KADAR AIR NPK DI PT. PETROKIMIA GRESIK." Jurnal Rekayasa Mesin 14, no. 1 (2023): 273–89. http://dx.doi.org/10.21776/jrm.v14i1.1279.
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Drying is an important process in the production of NPK fertilizers. The average NPK water content in August 2021 – January 2022 was 1.64%, still exceeding a good NPK water content of < 1.5%. The high NPK moisture content resulted that review are needed in drying process through rotary dryer evaluation and observation by creating multiple linear regression math. The average thermal efficiency is calculated based on the actual data, which is 73%, do not decrease significantly and still close to the value of the design data of 90%. The mathematical equation obtained is Y1 = 114.9292 + 0.000338X1 + 0.0439062X2 -1.711792X3 -0.3749378X4 with a regression coefficient of 0.8657472. Factors that affect the NPK fertilizer water content are the air temperature of dryer, the flow rate of incoming NPK water mass, the flow rate of NPK mass and the flow rate of air dryer mass.
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Solihin, Eso, Apong Sandrawati, Wawan Kurniawan, Haris Maulana, and Zaenal Mutaqin. "Aplikasi Pupuk Cair Plus Silika Dengan Pupuk Anorganik N,P,K Terhadap Pertumbuhan dan Hasil Tanaman Padi (Oryza Sativa L.) Pada Inceptisol Jatinangor." Agro Wiralodra 4, no. 2 (2021): 58–63. http://dx.doi.org/10.31943/agrowiralodra.v4i2.70.
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This experiment aims to determine the effect of various concentrations of liquid fertilizer plus silica combined with N, P, and K inorganic fertilizers on the growth and yield of rice plants (oryza zativa). The trial was conducted in July 2018 to November 2018 in the Ciparanje experimental garden of the Faculty of Agriculture, Padjadjaran University, Jatinangor, Sumedang. The method used is Randomized Block Design (RBD) which consists of ten treatments with three replications; Treatment (A) Control, (B) standard NPK, (C) Plus Silica Liquid Fertilizer, (D) ¼ NPK + Silica Plus Liquid Fertilizer, (E) ½ NPK + Silica Plus Liquid Fertilizer, (F) ¾ NPK + Liquid Fertilizer Silica Plus, (G) NPK + Silica Plus Liquid Fertilizer, (H) ¾ NPK + ¼ Silica Plus Liquid Fertilizer, (I) ¾ NPK + ½ Silica Plus Liquid Fertilizer, (J) ¾ NPK + ¾ Silica Plus Liquid Fertilizer. The results showed that there was an effect of silica fertilizer on the growth and number of tillers after rice 8 MST. The treatment of F (¾ NPK + Liquid Fertilizer Plus Silica) gave the highest value to the yield of rice plants with the results of 53.31 gr of crop.
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Dharmaseno Valgunadi, Bahrun, Nur Hidayat, and Adi Fathul Qohar. "PENGARUH KOMBINASI PUPUK KANDANG DAN NPK TERHADAP PRODUKSI SEGAR DAN RASIO DAUN DAN BATANG RUMPUT GAJAH MINI DEFOIASI KE-3." JURNAL SAINS PETERNAKAN NUSANTARA 1, no. 02 (2021): 70–78. http://dx.doi.org/10.53863/jspn.v1i02.379.
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The purpose of this study was to examine the effect of applying manure and NPK fertilizer with the use of optimal fertilizer doses on odot grass. The materials used in this study were 720 stems of grass cuttings, 270 kg of manure, 2.5 kg of NPK fertilizer. The method used is factorial pattern experiments with random group designs. The first factor is manure consisting of K0 fertilizer: 0 kg / 5m2 fertilizer, K1 fertilizer: 7.5 kg / 5m2 fertilizer, K2 fertilizer: 15 kg / 5m2 fertilizer and the second factor is NPK (M) fertilizer consisting of M0 fertilizer: NPK 0 g / 5m2, M1: NPK Fertilizer 37.5 g / 5m2, M2: NPK Fertilizer 75 g / 5m2 and M3: NPK Fertilizer 112.5 g / 5m2. The measured variable is the Fresh Production and the Ratio of Leaves and Stems from the third Denudation. The average value of fresh production results obtained in each treatment up and down K0M0 = 6.71 ± 0.112. K0M1 = 6.87 ± 0.104, K0M2 = 6.82 ± 0.042, K0M3 = 8.55 ± 0.192, K1M0 = 7.33 ± 0.440, K1M1 = 7.69 ± 0.421, K1M2 = 7.91 ± 0.170, K1M3 = 7.33 9.94 ± 1.30, K2M0 = 9.35 ± 0.280, K2M1 = 8.20 ± 0.410, K2M2 = 10.46 ± 0.142, K2M3 = 11.21 ± 0.205. The average value of the ratio of stem leaves. K0M0 = 3.65 ± 0.12. K0M1 = 3.85 ± 0.293, K0M2 = 4.22 ± 0.083, K0M3 = 4.60 ± 0.049, K1M0 = 3.63 ± 0.255, K1M1 = 4.75 ± 0.202, K1M2 = 5.27 ± 0.194, K1M3 = 0.63 5.43 ± 0.140, K2M0 = 5.67 ± 0.075, K2M1 = 5.64 ± 0.110, K2M2 = 5.54 ± 0.081, K2M3 = 7.11 ± 0.278 Results of the analysis of variance showed that the application of manure was significant (P<0,01) and NPK fertilizer application were also significant (P<0.05) in Fresh Production. The application of manure to the leaf stem ratio was also significant (P<0.05) and the application of NPK fertilizer was also significant (P<0.01). Results The interaction between manure and NPK has a very significant influence on fresh production and leaf stem ratio. The higher dose of manure and NPK will increase the fresh production and ratio of stem leaves Keywords: Fresh production, leaf leaf ratio, odot grass, manure, NPK
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Bibi, Fatma, Asifa Hameed, Noor Muhammad, et al. "Potential of Integrated Nutrient Management to Rehabilitate the Dieback-Affected Mango Cultivar Sammer Bahisht Chaunsa." Sustainability 15, no. 14 (2023): 11118. http://dx.doi.org/10.3390/su151411118.
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The mango cultivar Summer Bahisht (SB) Chaunsa is the most sensitive and susceptible to dieback disease among other cultivars. Despite the environmental variables, low nutritional value contributes to the drastic prevalence of the disease. Therefore, it was hypothesized that providing balanced nutrition through an integrated nutrient approach could rehabilitate plants affected by dieback disease. Treatments were NPK at the recommended dose (control), NPK + farmyard manure, NPK + press mud, NPK + poultry litter, and NPK + city effluent, and NPK + sulfur. Sulfur was applied at 3 kg per plant, while the organic amendments were applied at 100 kg per plant NPK was applied at the recommended dose per square feet of tree canopy. Leaf samples were taken 5 months after treatment application. Results were analyzed through two-way ANOVA analysis using R statistical language software. Although the disease recovery rate was slow and we did not find any plant that recovered one year after treatment application, the reduction in disease was prominent in the treatment where poultry litter + NPK was applied. The poultry litter with the recommended NPK treatment showed 20% and 50% reductions in disease intensity in the 2nd and 3rd years of the experiment, respectively, as compared to NPK alone.
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Abubakar, G. A., B. O. Ocheni, and A. I. Gabasawa. "Trichoderma viride affects soil organic carbon and phosphorous availability in Sokoto Sudan Savanna, Nigeria." Agricultural Science and Technology 17, no. 1 (2025): 87–93. https://doi.org/10.15547/ast.2025.01.011.
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Abstract. This study was conducted to determine the influence of mycorrhizal fungus (Trichoderma viride) as biostimulator powder and NPK fertilizer on some soil chemical properties in Sokoto Sudan Savanna, Nigeria. The experiment was conducted at Usmanu Danfodiyo Fadama Teaching and Research Farm in Wamakko Local Govemment Area of Sokoto State. Soil samples were collected at a depth of 0 – 30 cm from four (4) plots of 3 m x 3 m size, two (2) weeks after treatment application. Treatments were applied in a Randomized Complete Block Design (RCBD) replicated three times. The treatments include: Control, Trichoderma viride, NPK fertilizer and Trichoderma viride + NPK fertilizer. A total number of ten (10) sub-samples were collected from each plot to make a composite sample. 0.25Kghha-1 of biostimulator (Trichoderma viride) and 120K gha-1 of NPK chemical fertilizer were applied (inoculated) after mixing with 200 litres of water. The results of the study showed that Trichoderma viride significantly influenced the soil pH, organic carbon and organic matter in soils. Application of plant Biostimulator greatly influenced the soil chemical properties. Soil pH was within the range 6.83 – 7.02 most favorable for plant growth because most nutrients are easily available at this range. The results obtained showed a significant (p<0.05) difference between the treatments. Organic carbon was significantly (p<0.05) higher than the control treatments. The combination of Trichoderma viride + NPK fertilizer was significantly higher (p<0.05) 1.5 g/kg than the treatment with sole application of NPK fertilizer. Available phosphorus ranged from 0.89 – 0.96 mg/kg with a mean value of 0.91 mg/kg for control treatment, while treatment with the application of Trichoderma viride ranged from 0.87 – 0.91 mg/kg with a mean value of 0.89 mg/kg, while NPK fertilizer treatment had a value ranging from 0.86 – 0.95 mg/kg with a mean value of 0.90 mg/kg, whereas the combined treatment with Trichoderma viride + NPK fertilizer had available phosphorus value ranging from 0.89 – 0.95 mg/kg with a mean value of 0.92 mg/kg which was slightly higher than all the treatments. This further revealed that Trichoderma viride can greatly influence the availability of soil nutrients which promote their uptake in plants for growth and development in Sokoto Sudan Savanna agroecological zone, Nigeria.
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Pasaribu, Tiurma, N. Arini, T. Purwadaria, and A. P. Sinurat. "Nutritive value of fermented palm oil sludge added with different sources of phosphorus." Jurnal Ilmu Ternak dan Veteriner 8, no. 3 (2012): 151–56. https://doi.org/10.14334/jitv.v8i3.386.
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The experiment has been conducted to determine the nutritive value of palm oil sludge fermented with A. niger added with different sources of phosphorus (NPK, P2O5, NaH2PO4). The experiment was assigned in a factorial (3x3) design. The main factor was sources of phosphorus, while the sub factor was time of incubation (0, 4 days aerobic incubation, and 4 days aerobic incubation followed by 2 days anaerobic incubation). Parameters measured were pH, soluble nitrogen, true protein and crude protein, total α-amino acid (TAAA), soluble phosphorus and total phosphor, in vitro dry matter (DCBK), and true protein digestibilities (DCP). Results from the analyses showed that fermentation increased the contents of soluble and total P, protein and TAAA and the value of in vitro protein digestibility. Fermented product added with P2O5 had the highest in vitro dry matter digestibility, while the one added with NPK had true protein content and digestibility. It was concluded that additional NPK gave the best result interm of nutritive value.  Key words: Palm oil sludge, A. niger, phosphorus sources
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Novor, Samuel, Kwadwo Gyasi Santo, Khalid Aziz Abdul, James Owusu-Kwarteng, Kwabena Atakora, and Felix Eyahanyo. "Evaluating fertilizer effects on growth, yield, and nutritional value of Tiger Nut (Cyperus esculentus L.) in Ghana." Australian Journal of Crop Science 19, no. 03 (2025): 225–35. https://doi.org/10.21475/ajcs.25.19.03.p202.
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This study assessed the effects of organic and inorganic fertilizers, both individually and in combination, on the mineral composition, yield, and soil chemical properties of Cyperus esculentus (tiger nut) tubers. The experiment was carried out over three growing seasons in the forest-savanna transition zone, where the soil is classified as Acrisol. A 2 x 4 factorial arrangement within a Randomized Complete Block Design (RCBD) was employed, comparing two varieties of tiger nut (brown and black) under four fertilization treatments: no fertilizer (control), 2,000 kg ha⁻¹ poultry manure, 300 kg ha⁻¹ NPK 15:15:15, and a combination of 1,000 kg ha⁻¹ poultry manure + 150 kg ha⁻¹ NPK 15:15:15. The findings indicated that the two tiger nut varieties responded similarly across all measured parameters. The application of poultry manure, both alone and in combination with NPK 15:15:15, significantly improved soil properties, particularly calcium, sodium, hydrogen, and aluminum levels, across all seasons. Additionally, the combined treatment of poultry manure and NPK 15:15:15 consistently enriched the tubers with essential nutrients such as phosphorus, potassium, iron, manganese, copper, and zinc throughout the study period. The sole use of poultry manure enhanced the levels of phosphorus and potassium in the nuts across all seasons. In conclusion, the combined application of poultry manure and NPK 15:15:15 significantly increased tiger nut yield, improved soil nutrient content, and enhanced the nutritional quality of the nuts compared to the control and other treatments. Therefore, this combined fertilization approach is recommended for farmers as it effectively boosts both the yield and quality of tiger nuts, providing a sustainable option for soil fertility management.
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Sumarno, Jaka, and Rahmat Hanif Anasiru. "ANALISIS DAMPAK PENGGUNAAN PUPUK NPK LODRIN TERHADAP PRODUKSI DAN EFISIENSI USAHATANI KAKAO." Informatika Pertanian 27, no. 2 (2018): 73. http://dx.doi.org/10.21082/ip.v27n2.2018.p73-86.
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Cocoa has been developed in various regions in Indonesia. In developing cocoa farming, farmers still face the problem of low productivity, efficiency and quality of seeds. This is partly due to not using the right fertilizer. This study aims to analyze the effect of NPK Lodrin fertilizer use on the efficiency and income of cocoa farming in Gorontalo. The study was conducted in several Gorontalo cocoa production centers, namely in Gorontalo District and Pohuwato District in 2016. Data collection was conducted by survey method with questionnaires or structured questionnaires for 59 cocoa farmers. Respondents were farmers who used Lodrin NPK fertilizer and farmers who did not use Lodrin NPK fertilizer. The selection of respondents was carried out by stratified random sampling technique. The farming efficiency analysis method uses the Cobb-Douglas stochastic frontier production function model. Financial farming analysis was carried out to determine the level of cocoa farming income with the use of Lodrin NPK fertilizer. The results showed that the use of Lodrin NPK fertilizer significantly affected the increase in production, efficiency and income of cocoa farming in Gorontalo. The average level of farm efficiency both technical, allocative and economic efficiency of cocoa farmers using Lodrin NPK fertilizer is higher when compared to farmers who do not use Lodrin NPK fertilizer. The factors that influence the inefficiency of cocoa farming are farmer education and institutional factors, namely the frequency of counseling, participation in farmer groups, access to credit and technology assistance. The use of Lodrin NPK fertilizer increases the income of cocoa farming, as evidenced by the value of the R / C ratio and the value of return for higher production factors of farmers who use Lodrin NPK fertilizer.
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Trimulyadi Rekso, Gatot. "Comparative effect of polymer coating materials on physical properties of NPK fertilizer pellet." BIO Web of Conferences 80 (2023): 03004. http://dx.doi.org/10.1051/bioconf/20238003004.
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Slow-release fertilizer is one method to reduce the rate of loss of fertilizer from the soil due to leaching by rainwater or irrigation water. One of the agents that can be used for slow-release fertilizers is polymeric materials coated on NPK fertilizers. The NPK fertilizer coating polymer material used was a mixture of starch, acrylamide, PVA, and chitosan that was formulated and irradiated at a dose of 20 kGy. The purpose of this study was to obtain the best comparison between coating materials and NPK fertilizers made with a pelletizer machine. NPK fertilizer is mashed and mixed with polymer coating material with a weight ratio of NPK coating material/fertilizer; 1/9, 2/8, and 3/7. The results obtained showed the largest pellet yield capacity using a ratio of coating material and NPK fertilizer with a weight ratio of 1/9 of 4.28 g/minute and the greatest durability value at a ratio of 3/7 with a value of 87.1%. NPK released in NPK fertilizer coated with a polymer coating and fertilizer in a ratio of 1/9, 2/8, and 3/7 resulted in the release of NPK with not too big a difference. In the analysis of the functional group by FTIR between non-irradiated formulation and irradiated 20 kGy, there was no addition or change of molecular structure in the functional group. whereas thermal analysis with DSC displayed endotherm at temperature 500C to 1200C and exotherm at temperature 2500C until 3200C for analysis of TGA degradation of the formulation is divided into 2 phases, in the first phase degradation begins at a temperature of 500C to 1500C losing weight of 5% and in the second phase of degradation at 2500C to 5000C losing weighs 47%
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B. A. Omer and B. J. Mahmood. "IMPACT OF NANO AND MINERAL FERTILIZERS ON QUALITY AND MEDICAL PROPERTIES OF FLAX OIL." IRAQI JOURNAL OF AGRICULTURAL SCIENCES 55, no. 4 (2024): 1544–56. http://dx.doi.org/10.36103/6tnpw950.
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Two field factorial experiments were carried out at (Grda-rasha and Grdmala) fields in Erbil Governorate - Kurdistan Region-Iraq during the growing season of 2019-2020. This study was aimed to evaluate the effects of Nano and mineral fertilizers on quality and some medical properties of two flaxseed oil (Linum usitatissimum L.) cultivars with a randomized complete block design using 3 replicates. The first factor included seven fertilization treatments (control, Kcl, Urea, Agriculture Sulfur, Triple Super Phosphate, Super Nano-fertilizer, and Nano-NPK), the second factor was Libra and Brazowe flax cultivars. The fertilizer treatments significantly affected natural product properties. The highest value of mucilage (30.70 and 39.26 %) were produced from application of urea and Nano NPK, moreover the highest value of antioxidant activity (75.30 and 86.53 %) was produced from the application of super Nano and triple super phosphate for both locations respectively. The cultivars affected significantly on most of the studied characteristic, the highest mucilage, phenol content and antioxidant activity were produced from the Brazowe cultivar at Grdmala. Application of Nano NPK caused a significant increase in linolenic acid concentration at both locations, which were reached to (39.10 and 37.35 %) respectively. The highest value of oil (33.42 %) had produced from interaction treatments of (Brazowe x Nano NPK) while mucilage, and linolenic were obtained from interaction treatments of (Libra x Nano NPK) with the values of (40.48 and 39.40 %), respectively.
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Kasno, Antonius, Kiki Zakiah, and I. Wayan Suastika. "APPLICATION OF NPK 15-10-12 FERTILIZER TO INCREASE THE YIELD OF PADDY FIELD, FERTILIZATION EFFICIENCY, AND EFFECTIVITY OF FERTILIZING IN INCEPTISOL." Agric 34, no. 2 (2022): 211–24. http://dx.doi.org/10.24246/agric.2022.v34.i2.p211-224.
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The quality and effective fertilizers support site-specific nutrient management of paddy fields, which can increase yields and efficiency of fertilizer. Fertilizer formulas should be based on soil nutrient status and crop requirements. This study aims to examine the reformulation of compound NPK fertilizers for lowland rice. The study was conducted in Cibungbulang, Bogor Regency from October 2020 - March 2021. The experimental design was carried out using a randomized complete block design with 10 treatments, and 3 replications. The treatments consisted of five levels of NPK 15-10-12 fertilizer doses, plus control treatment, NPK 15-15-15 and single NPK as standard, and additional treatment with the addition of straw compost. The plots were made measuring 5 m x 5 m. The results showed that statistically, the application of NPK 15-10-12 fertilizer gave the same effect on plant height, the number of tillers, weight of dry grain harvested, the weight of dry milled grain, and weight of dry straw compared to single NPK fertilizer and NPK 15-15-15. The optimum dose of NPK 15-10-12 fertilizer for lowland rice is 220 kg ha-1 combined with Urea at a dose of 225 kg ha-1. At the same dose (300 kg ha-1) the efficiency of NPK 15-10-12 fertilizer (9.70 kg grain kg-1 fertilizer) was higher than NPK 15-15-15 fertilizer (8.47 kg grain kg-1 fertilizer). Higher efficiency is indicated by lower fertilization doses. The RAE value of NPK 15-10-12 (142%) was higher than that of NPK 15-15-15 at the same dose and single NPK. This research implies that the formula for compound NPK 15-10-12 fertilizer can be used as a substitute for compound NPK 15-15-15 fertilizer.
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Sihombing, Donald, Catur Hermanto, Rika Asnita, et al. "Effectivenes of NPK compound (10-30-20) to improve growth and yield of hybrid maize on vertisol soil." E3S Web of Conferences 306 (2021): 01046. http://dx.doi.org/10.1051/e3sconf/202130601046.
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To determine the effectiveness of NPK compound (10-30-20) fertilizer to maize growth and yield, a study was conducted on vertisol soil of the rainfed rice field in Gambir Kuning village, Kraton District Pasuruan Regency, from September 2020 until February 2021. The study was arranged in randomized block design with four replications. As the treatment i.e., A. control (without inorganic fertilizer), B. standard/local recommendation (NPK 15-15-15) 300 kg, C. NPK (10-30-20) 100 kg, D. NPK (10-30-20) 200 kg, E. NPK (10-30-20) 300 kg, F. NPK (10-30-20) 400 kg, G. NPK (10-30-20) 500 kg ha-1. Except for control, all treatments were fertilized with 200 kg Urea and 100 kg ZA. P27 hybrid maize variety was used as an indicator plant. The results showed that the applications of NPK compound ((10-30-20) were increasing plant growth and yield effectively. The optimum dosage of NPK (10-30-20) was 499.55 kg ha-1. Treatment F produced the highest yield (6.83 tons ha-1) and was significantly different from the control (4.13 tons ha-1) and higher than the standard (6.24 tons ha-1). This treatment also gave the highest RAE value (127,55).
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Mazetti Fernandes, Adalton, Emerson Loli Garcia, Magali Leonel, and Lydia Helena da Silva de Oliveira Mota. "PRODUTIVIDADE E QUALIDADE DE RAÍZES DA MANDIOQUINHA-SALSA EM DIFERENTES NÍVEIS DE ADUBAÇÃO NPK." COLLOQUIUM AGRARIAE 14, no. 3 (2018): 194–203. http://dx.doi.org/10.5747/ca.2018.v14.n3.a242.
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The storage roots of arracacha have high nutritional value, being rich in carbohydrates, minerals, vitamins A and C, and starch of high digestibility. However, in this crop one of the decisive factors for the production of roots with higher nutritional value is the balanced fertilization. The aim of this study was to evaluate the yield and nutritional quality of storage roots of arracacha, grown at increasing levels of NPK fertilization. The experiment was conducted in the randomized blocks design, with eight replications. The treatments consisted of three NPK levels (AD0 = unfertilized cultivation, AD1 = cultivation with 50% of recommended fertilization, and AD2 = cultivation with 100% ofrecommended fertilization). It was observedthat higher levels of NPK fertilization increase the number, size and marketable yield of storage roots of arracachacrop. NPK fertilization also increases the size and contentsof K, Mg, and Mn of storage roots, without interfering with the pulp pH and contentsof protein, Ca, Cu, and Fe. However, when the increase in root size is not accompanied by an increase in dry matter content, the starch, P, and Zn contents of the roots reduce with increasing levels of NPK fertilization.
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P.K. SINGH and A.S. CHANDEL. "Effect of biozyme on yield and quality of wheat (Triticunz aestivum)." Indian Journal of Agronomy 50, no. 1 (2001): 58–60. http://dx.doi.org/10.59797/ija.v50i1.5062.
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A field experiment was conducted during 1998 and 1999 at Pantnagar, to evaluate the effect of recommended NPK and 'Biozyme' granule on wheat (nificum aesfivum L. emend. Fiori & Paol.). Biozyme granules or Biozyme crop+ spray applied along with half of recommended NPK resulted in significant improvement in the yield attributes, grain, straw and biological yields and protein content. Highest value of yield attributes like number of spikes and 1,000-grain weight were recorded with Biozyme granule 40 kglha + half of recommended NPK, whereas highest number of grainslspike were recorded under Biozyme crop+ spray @ 400 mllha done in conjunction with half of recommended NPK. On pooled basis, highest grain, straw and biological yields and protein content were recorded under Biozyme crop+ spray @ 400 mllha + half of recommended NPK. Application of Biozyme crop+ spray 400 mll ha + half of recommended NPK resulted 12.90, 3.24 and 6.76 higher grain straw and total biological yield respec- tively. The yields under the pure treatments of the Biozyme were comparable to half of recomended NPK.
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Sosnowski, Jacek, Milena Truba, and Katarzyna Jarecka. "Effect of Humus, Compost, and Vermicompost Extracts on the Net Energy Concentration, Net Energy of Lactation, and Energy Yield of Dactylis glomerata and Lolium perenne." Agriculture 12, no. 8 (2022): 1092. http://dx.doi.org/10.3390/agriculture12081092.
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The purpose of the research was to examine whether selected organic materials could increase the net energy concentration, net energy of lactation, and energy yield of two grass species. The main factors in the experiment were soil conditioners with the content based on compost, vermicompost and humus extract, applied separately and supplemented with NPK fertilizers. The second factor is grass species, Dactylis glomerata and Lolium perenne. Mineral fertilizer and compost extract resulted in a reduction in net energy concentration by about 5%. The largest value of net energy of lactation (NEL) was obtained after the application of humus extract with NPK. The average value of the energy yield was the biggest on units where biological extracts were applied together with NPK. That increase was from 63% for NPK applied together with humus extract to 76.5% for the NPK applied with compost extract. Of the applied humic substances, those applied together with mineral fertilizer had the greatest impact on net energy value and NEL. The use of compost extract contributed to a substantial increase in the yield of feed energy. Other biological substances applied together with mineral fertilizer also had a positive impact. Weather conditions in various years of the research differentiated feed energy values. Due to the complexity of the environment (soil, climate, plant), it is impossible to provide a universal combination of fertilizers that increases the energy value of forage. Therefore, it is important to carry out practical field experiments that will indicate the optimal fertilizer combinations suitable for the selected region.
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Chosim, Nanang, Retno Tri Purnamasari, and Fajar Hidayanto. "Growth and Yield of Carrot Plants (Daucus carota L.) in Combined Doses of Chicken Cage Organic Fertilizer and NPK Inorganic Fertilizer." Journal of Applied Plant Technology 3, no. 1 (2024): 37–49. http://dx.doi.org/10.30742/pvz57r58.
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Demand for vegetable commodities, including carrots, is high due to the increasing population and increasing public awareness of nutritional value, the need for food consumption is also increasing. The purpose of this study was to obtain the right dose of combination of chicken coop organic fertilizer and pearl npk inorganic fertilizer to support the growth and yield of carrot plants. The method used in this study was a randomized group design (RAK) with 4 treatments and each treatment was repeated 6 times. The treatment made is P0: 100% NPK Mutiara (75 kg ha-1); P1: Chicken manure dose 20 tons ha-1 + 50 % NPK; P2: Chicken manure dose 25 tons ha-1 + 50 % NPK; P3: Chicken manure dose 30 tons ha-1 + 50 % NPK. Research results The results showed that dosing treatment of 30 tons ha-1 + 50% NPK Plants-1 can increase the growth and highest yield of carrot plants compared to other treatments.
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Batac, Christelle Paula Cortez, Nadeine San Juan Gathercole, Ana Katrina Fajardo Maravilla, and Arnel Bas Beltran. "Evaluation of Spirulina platensis in Bicarbonate- Based Integrated Carbon Capture and Algae Production System utilizing different culture media." ASEAN Journal of Chemical Engineering 20, no. 1 (2020): 77. http://dx.doi.org/10.22146/ajche.52762.
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A method known as Bicarbonate-based Integrated Carbon Capture andAlgae Production System (BICCAPS), is a growing study introduced as an alternative to current carbon capture and sequestration (CCS) methods. It is a closed-loop cycle involving inorganic carbon in the form of bicarbonates, which is consumed by microalgae for growth and utilizes the regenerated carbonates for another cycle of carbon capture. Existing literature requires more in-depth experimentation and analysis with regards to the viability of different microorganisms to the rising method. Spirulina platensis was evaluated in BICCAPS using 0.1M Na2CO3, employing three different culture media for growth, namely, modified Zarrouk’s, NPK- based, and NPK- based with A5 solution media. Biomass growth, productivity, and carbon dioxide utilization were investigated to determine the effectivity of BICCAPS as a carbon sequestration technique. At control conditions, NPK-based with A5 solution medium yielded the highest productivity with a value of 10.81 mg L-1 day-1. Likewise, using NaHCO3 as a carbon source, results show that the highest productivity was achieved also under NPK- based with A5 solution medium with a value of 6.80 mg L-1 day-1, as well as a high carbon conversion value of 2.092 day-1.
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Purnomo, Joko, Nurjaya Nurjaya, and Diah Setyorini. "The Effect of NPK 12-6-27 Fertilization on the Growth of Oil Palm Plants in the Main Nursery on Bogor Acid Dry Land." Jurnal Penelitian Pendidikan IPA 8, SpecialIssue (2022): 129–36. http://dx.doi.org/10.29303/jppipa.v8ispecialissue.2483.
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Research on the response to NPK 12-6-27 fertilization on oil palm seedlings was carried out on Oxisols acid dry soil from Bogor. Oil palm seedlings were planted in pots at the age of 3 months after the prenursery phase and maintained for 6 months. The purpose of the study was to determine the response of the NPK 12-6-27 fertilizer formula to the growth of oil palm plants in the main nursery and to obtain information on the optimum dose. The experimental design used was a randomized block with 7 treatments which were repeated 8 times. The treatments consisted of control, standard NPK, and five doses of NPK fertilizer formula 12-6-27. The results showed that the soil has a low level of soil fertility. Soil fertility constraints include acid soil pH (pH-H2O = 4.7), level of C and N, P and K, cation exchange and cation exchange capacity (CEC) were low and high level of Al saturation (54%). At 6 months after application (BSA) fertilizers, application of NPK significantly increased oil palm plant height. The plant height in the Control treatment was about 71.4 cm and increased to 86.0 – 93.4 cm in the standard NPK and NPK 12-6-27 treatments. The standard NPK and NPK 12-6-27 treatments did not produce significantly different plant heights. The Control treatment resulted in stem dry weight of 114.3 g/pot and significantly increased to 158.2 – 207.0 g/pot with standard NPK and NPK 12-6-27. Fertilization of NPK 12-6-27 doses of 1.5 x and 2x resulted in plant dry weight of 206.3 g/pot and 207.0 g/pot higher and significantly different than standard NPK which resulted in plant dry weight of 158.2 g/pot. The RAE value of NPK 12-6-27 fertilizer is 120 – 211 higher than the standard NPK namely 100. The optimum dose of NPK 12-6-27 is 51 g/pot given for 6 months in the main nursery
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Tobing Lukiyono, Yauwan, Edza Aria Wikurendra, Salfa Salsabilah Zain, and Satriyo Siswo Utomo. "Nutrient analysis of fermented chicken feather fertilizer waste using Bacillus subtilis on the growth of green spinach (Amaranthus tricolor)." Bali Medical Journal 12, no. 3 (2023): 2855–58. http://dx.doi.org/10.15562/bmj.v12i3.4444.
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Introduction: Farmers generally provide NPK chemical fertilizers (Nitrogen, Phosphorus, Potassium) to provide nutrients for green spinach plants. However, the use of NPK chemical fertilizers harms the environment. Nowadays, chicken feathers are known as beneficial for fertilizing plants, similar to NPK chemical fertilizers. Fermentation of chicken feathers by Bacillus sp. can improve the quality of protein in chicken feather fertilizers which can be used as a supplement in renewing soil conditions. Thus, this study is aimed to evaluate the nutrient component of fermented chicken feather fertilizer waste using Bacillus subtilis on the growth of green spinach (Amaranthus tricolor) Methods: This was a cross-sectional study. In this study, we used a total sampling technique. In this study, three groups got different chicken father fertilizers, and two groups of standard and did not get the chicken father fertilizer. Data from the research will be statistically analyzed descriptively. The descriptive data will provide in the table. Results: In the first treatment group, the value of nitrogen (N) was 2.439, phosphorus (P) was 2.225%, and potassium (K) was 2.408%. In the second treatment group, the nitrogen (N) value obtained 2.866%, the phosphorus (P) value was 2.174%, and the potassium (K) value was 2.477%. In the third treatment group, the nitrogen (N) value was 3.291%, the phosphorus value was 3.082 %, and the Potassium (K) value was 3.135%. Conclusion: According to the results, the higher the chicken feather fermented fertilizer dose, the higher the NPK content. This is certainly good for the growth of spinach.
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Sara, Dirga Sapta, Emma Trinurani Sofyan, and Ania Citraresmini. "Efek Aplikasi Pupuk NPK cair terhadap P-tersedia, Serapan P, dan Bobot Umbi Bawang Merah (Allium ascalonicum L.) di Tanah Inceptisol Jatinangor." soilrens 22, no. 2 (2025): 91–96. https://doi.org/10.24198/soilrens.v22i2.61719.
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Shallots are a high-value horticultural commodity that requires optimal phosphorus (P) availability tosupport growth and bulb production. However, Inceptisol soils have limitations in providing phosphorusdue to their high fixation capacity and low organic matter content. This study aimed to examine the effectof liquid NPK fertilizer application on soil phosphorus availability, plant phosphorus uptake, and shallotbulb yield in Inceptisol soil. The experiment was conducted using a randomized complete block design(RCBD) with six treatments: control, recommended NPK fertilizer, and four doses of liquid NPK fertilizer(½, 1, 1 ½, and 2 doses), each with four replications. The results showed that liquid NPK fertilizerapplication significantly increased soil phosphorus availability, plant phosphorus uptake, and both freshand dry bulb weights compared to the control. The 1 ½-dose liquid NPK fertilizer treatment resulted in anavailable P content of 12.72 ppm, a phosphorus uptake of 3.28 mg plant⁻¹, a fresh bulb weight of 78.63 gclump⁻¹, and a dry bulb weight of 63.86 g clump⁻¹, which were not significantly different from therecommended NPK treatment. This indicates that applying 1 ½ doses of liquid NPK fertilizer can serve asan equivalent alternative to conventional granular NPK fertilizer in providing phosphorus for shallotcultivation. Thus, the application of liquid NPK fertilizer at 1 ½ times the recommended dose can beproposed as an effective and efficient fertilization strategy to improve shallot productivity in Inceptisol soil.
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Jadidah, Riskon, Dila Febria, Ratih Rahhutami, and Wika Anrya Darma. "Effect of NPK Fertilizer Dosage and Plant Spacing on Growth and Yield of Cauliflower (Brassica oleraceae L.)." Journal of Horticulture Production Technology 2, no. 2 (2024): 114–19. https://doi.org/10.25181/jhpt.v2i2.3798.
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Cauliflower is a vegetable with high economic value. However, cauliflower production was decrease caused by crop failure resulting, pest and diseases attack. Decrease of Cauliflower production related to soil fertility. One of attempts to overcome this problem is combining NPK fertilizer and setting of plant spacing to increase cauliflower production in Indonesia. The aims of this research are First: Determine the most effective dose of NPK fertilizer for growth and yield cauliflower, second: Finding the optimal plant spacing to support growth and yield of cauliflower, and Third: identifying best combinations of NPK fertilizer dosage and plant spacing to increasing growth and yield of cauliflower production. This research used a factorial Randomized Group Design (RAK) by two factors: NPK fertilizer dose (0 g/plot, 5 g/plot, 10 g/plot dan 15 g/plot), plant spacing (40 x 45 cm, 50 x 45 cm, and 60 x45 cm). Results of this research show that application doses of NPK fertilizer provides best results at an NPK fertilizer dose of 10 g/plot. Application of plant spacing did not show significant differences throughout observed of all parameters. Additionally, no interactions from combination of NPK fertilizer dosage and plant spacing cauliflower.
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Mansur, Irdika, and Ega Diany. "Respon Pertumbuhan Bibit Ylang-Ylang terhadap Persaingan dengan Rumput Signal dan Penambahan NPK." Journal of Tropical Silviculture 13, no. 02 (2022): 115–22. http://dx.doi.org/10.29244/j-siltrop.13.02.115-122.
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The application of silvopasture between the ylang-ylang (Cananga odorata forma enuine) plant and the signal grass (Brachiaria decumbens) has the potential to produce large economic value. The purpose of this study was to determine the response of ylang-ylang seedling growth to competition with grass signals without or with the addition of NPK, and to find out the optimal dose of NPK fertilizer that could help the growth of ylang-ylang seeds planted with grass signals. This study was conducted using a factorial pattern in a complete randomized design with the first factor being planting signal grass and the second factor was adding NPK fertilizer. The results of this study indicate that planting signal grass and adding NPK as much as 0,75 g significantly affected to the growth of ylang-ylang seedlings. The presence of signal grass in the same media showed no inhibition of the growth of ylang-ylang seedlings. The addition of NPK with the dose used did not significantly affect the growth of ylang-ylang seeds. 
 Keywords: Brachiaria decumbens, Cananga odorata, NPK fertilizer dosage, silvopasture
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Bajoliya, Chandrabhan, B. S. Dwivedi, Rishikesh Tiwari, Prashant Kurmi, Yagni Tekam, and Aruna Meravi. "Impact of Long-term Application of Fertilizers and FYM on Nutrient Uptake by Soybean Crop and Properties of Black Soil." International Journal of Plant & Soil Science 36, no. 9 (2024): 650–59. http://dx.doi.org/10.9734/ijpss/2024/v36i95013.
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Long Term Fertilizer Experiment (LTFE) play an important role in understanding the complex interactions involving plant, soil, climate, management practices and their effect on soil productivity over a long period of time. The present investigation is a part of ongoing All India Coordinated Research Project on Long Term Fertilizer Experiment with Soybean-Wheat Cropping Sequence, which was initiated since 1972. The experiment was carried out in a randomized block design consisting of eight treatments, viz. 50% NPK, 100% NPK, 150% NPK, 100% NP, 100% N, FYM (100% NPK+FYM), 100% NPK (-S) and Control. The significant nutrient content with nutrient uptake by soybean was noted in 100% NPK+FYM treatment over the control plot. It was also observed that nutrient content with nutrient uptake increased significantly with consecutive doses of fertilizers. On the other hand, 100% N and in the control group had the lowest value. However, adding fertilizer P in addition to N (100% NP) increased nutrient content and nutrient uptake by soybean crop. The highest. Soil organic carbon content was recorded with 100% NPK dose+FYM followed by 150% NPK treatment combination which could apparently due to the synergistic contribution of integration of fertilizer and FYM application. Similarly, the available N,P, K and S content in soil were found highest with 100% NPK + FYM followed by 150% NPK fertilizer dose. However, the lowest content was noted in control where crop was grown without fertilizers. Available sulphur was significantly higher over control in all the treatments receiving single super phosphate.
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Rakhi, Mohd Shah Alam, Jay Nath Patel, Yograj, and Ravinder. "Study on Production and Productivity of Oat (Avena sativa L.) Crop as Influenced by Different Organic and Inorganic Nutrient Managements under Mid – Hill Region of Himachal Pradesh." Journal of Experimental Agriculture International 46, no. 7 (2024): 781–91. http://dx.doi.org/10.9734/jeai/2024/v46i72631.
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Aim: To study on production and productivity of oat (Avena sativa L.) crop as influenced by different organic and inorganic nutrient managements under mid – hill region of Himachal Pradesh. Study design: The field experiment was conducted in randomized block design (RBD). Place and duration of study: A field experiment was carried out during 2022-2023 with the concept of integrated nutrient management at Abhilashi University Chail chowk Mandi (H.P.). Methodology: Seven treatments were evaluated in randomized block design with three replications. T1 – Control, T2 -50% NPK (N40 P20 K20), T3- 75% NPK (N60 P30 K30), T4-100% NPK (N80 P40 K40), T5- 50% NPK + FYM 10 t/ha, T6-75% NPK + FYM 5 t/ha, T7-75% NPK + FYM 10 t/ha. Results: The higher growth of oat crop could be achieved by adopting integrated nutrient management (T7 -75% NPK + FYM 10 t/ha) proved significantly superior to other treatments. The minimum value of growth parameters was recorded under control. Results revealed that higher yield attributes viz. No. of effective tillers, Spike length, No. of spikes, Grains per spike, test weight, were recorded under T7-75% NPK + FYM 10 t/h and lowest were recorded under T1-control. Yield parameters viz. grain yield, straw yield, biological yield was highest recorded under T7- (75% NPK + FYM 10 t/ha) and lowest were recorded under T1- control. Conclusion: On the basis of one season study, it can be safely concluded that the application of 75% NPK + FYM 10 t/ha superior in terms of growth and yield.
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Muhammad Naim. "Pengaruh Dosis Pupuk NPK dan Konsentrasi POC Nasi Basi terhadap Pertumbuhan Tanaman Hias Sirih Gading (Epipremnum aureum)." Perbal: Jurnal Pertanian Berkelanjutan 12, no. 2 (2024): 276–85. https://doi.org/10.30605/perbal.v12i2.4044.
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Penelitian ini bertujuan untuk mengevaluasi efektivitas penggunaan pupuk NPK Mutiara dan POC nasi basi terhadap pertumbuhan tanaman sirih gading. Penelitian ini dilakukan di Greenhouse kampus II Fakultas Pertanian Universitas Cokroaminoto Palopo Jalan Lamaranginang, Kelurahan Salobulo, Kecamatan Wara Utara, Kota Palopo. Penelitian ini dilaksanakan mulai dari bulan Juli sampai bulan September 2023. Penelitian ini menggunakan metode Rancangan Acak Kelompok, dengan 5 perlakuan dan 3 ulangan. P0 tanpa perlakuan (kontrol), P1= pupuk NPK Mutiara 5 gram dan POC nasi basi 50 ml/tanaman, P2 = pupuk NPK Mutiara 10 gram dan POC nasi basi 100 ml/tanaman, P3 = pupuk NPK Mutiara 15 gram dan POC nasi basi 150 ml/tanaman, P4 = pupuk NPK Mutiara 20 gram dan POC nasi basi 200 ml/tanaman. Hasil penelitian menunjukkan bahwa perlakuan pupuk NPK Mutiara dan POC nasi basi memberikan efek signifikan pada parameter tinggi tanaman dengan rata-rata 68,63 cm, serta sangat signifikan pada parameter jumlah daun dengan rata-rata 15,66 helai. Namun, perlakuan ini tidak memberikan efek signifikan pada parameter lebar daun yang memiliki nilai rata-rata 7 cm dan panjang daun dengan rata-rata 10,9 cm pada tanaman sirih gading. This study aims to evaluate the effectiveness of using NPK Mutiara fertilizer and fermented rice wash (POC) on the growth of pothos plants (Epipremnum aureum). The research was conducted in the Green House of Campus II, Faculty of Agriculture, Universitas Cokroaminoto Palopo, located on Jalan Lamaranginang, Salobulo Village, Wara Utara District, Palopo City. The study was carried out from July to September 2023. The research employed a Randomized Block Design (RBD) method, with 5 treatments and 3 replications. The treatments were: P0 (control) with no treatment, P1 with 5 grams of NPK Mutiara fertilizer and 50 ml of POC per plant, P2 with 10 grams of NPK Mutiara fertilizer and 100 ml of POC per plant, P3 with 15 grams of NPK Mutiara fertilizer and 150 ml of POC per plant, and P4 with 20 grams of NPK Mutiara fertilizer and 200 ml of POC per plant. The results showed that the application of NPK Mutiara fertilizer and POC had a significant effect on the plant height parameter, with an average height of 68.63 cm, and a highly significant effect on the number of leaves parameter, with an average of 15.66 leaves. However, this treatment did not have a significant effect on the leaf width parameter, which had an average value of 7 cm, and the leaf length parameter, with an average value of 10.9 cm in pothos plants.
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Adekiya, Aruna Olasekan, Elizabeth Temitope Alori, Christopher Muyiwa Aboyeji, et al. "MgO Fertilizer Sole and Combined with Organic and Inorganic Fertilizers: Effect on Soil Chemical Properties, Turmeric Performance, and Quality in a Tropical Alfisol." Scientific World Journal 2019 (June 20, 2019): 1–8. http://dx.doi.org/10.1155/2019/8140276.
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For soil fertility maintenance, secondary nutrient such as Magnesium (Mg) is always being neglected. However, its role is critical in the growth, yield, and quality of crops. Therefore, two field experiments were initiated in 2017 and 2018 to evaluate the response of soil chemical properties, performance, and qualities of turmeric (Curcuma longa L.) to Mg fertilizer alone and in combination with poultry manure (PM) and NPK 15-15-15 fertilizer (NPK). The treatments applied were the following: (i) PM alone at 8 t ha−1, (ii) NPK alone at 200 kg ha−1, (iii) Mg fertilizer alone (in form of MgO) at 20 kg ha−1, (iv) PM at 8 t ha−1 with MgO at 20 kg ha−1 (PM + Mg), (v) NPK at 200 kg ha−1 with MgO at 20kgha−1 (NPK + Mg), and (vi) control (no amendment of any kind). PM, NPK, and Mg fertilizers alone or NPK + Mg and PM + Mg increased soil chemical properties, performance (plant height, number of leaves, number of tillers, number of rhizomes, and fresh rhizome weight), and minerals and vitamins C and A contents of turmeric rhizome compared with the control. By averaging 2017 and 2018, Mg fertilizer alone increased the yield of turmeric by 10.8% compared with the control. For this experiment, NPK + Mg increased growth and yield of turmeric compared with other treatments. Also, averaging 2017 and 2018, NPK + Mg increased rhizome yield of turmeric by 13.6% and 10.6% compared with PM + Mg and NPK alone, respectively. Similarly, PM + Mg significantly improved mineral and vitamins contents compared with other treatments. Therefore, for those that desire turmeric rhizome for its nutritive value, PM + Mg is recommended. For those that want quantity, NPK + Mg is recommended.
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Sarma, U. J., M. Chakravarty, and H. C. Bhattacharyya. "Quantitative estimation of crop residues, their NPK potential and manurial value." Agricultural Science Digest - A Research Journal 33, no. 4 (2013): 309. http://dx.doi.org/10.5958/j.0976-0547.33.4.031.
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Irnawati, Diah Harun, Kusmiyati Kusmiyati, and Ahmad Raksun. "The Effect of Giving Shallot Extract (Allium Cepa L) and NPK Fertilizer on the Growth of Green Oil Palm (Brassica Juncea L)." Jurnal Pijar Mipa 20, no. 1 (2025): 179–86. https://doi.org/10.29303/jpm.v20i1.6605.
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Plant growth and development require nutrients, which can be given through fertilization in the form of organic or inorganic fertilizers. This study aims to determine the effect of providing shallot extract, NPK fertilizer, and a combination of both on the growth of mustard greens. This study used a two-factorial, Completely Randomized Design (CRD) consisting of NPK fertilizer and shallot extract treatments, each using five levels with three replications. The parameters observed were plant height, number of leaves, leaf area, plant fresh weight, and plant dry weight. The data obtained were analyzed using two-way ANOVA and continued with the Duncan multiple range test. The results of the ANOVA test showed that the main factor of NPK fertilizer obtained a value of (sig) ˂ 0.05, the main factor of organic fertilizer was red onion extract, and the interaction factor obtained a value of (sig) ˃ 0.05. The study results showed that the administration of NPK fertilizer can increase plant height, number of leaves, leaf area, wet weight, and dry weight of green mustard plants. The administration of shallot extract can increase plant height and the number of green mustard leaves. Still, it cannot increase green mustard plants' leaf area and wet and dry weight. The administration of a combination of NPK fertilizer and shallot extract cannot increase plant height, number of leaves, leaf area, wet weight, and dry weight of green mustard.
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Pandey, Dinesh, Anjum Ahmad, J. K. Chauhan, and N. Pandey. "Conjunctive use of organic and inorganic nutrient management on economics and quality of hybrid rice (Oryza sativa L.)." INTERNATIONAL JOURNAL OF AGRICULTURAL SCIENCES 17, no. 2 (2021): 424–29. http://dx.doi.org/10.15740/has/ijas/17.2/424-429.
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Field investigation was carried out during kharif 2002 and 2003 at research farm, IGAU, Raipur (C.G.). The experiment aimed at comparing performance of different levels of inorganic fertilizer and its conjunction with different organic fertilizers. Results showed that application of 100:60:40 kg NPK ha-1 in conjunction with PM gave the highest value of KLAC, ER and amylose content, which was comparable to inorganic fertilizer level of 100:60:40 kg NPK ha-1 applied along with FYM or blending of N with cow dung. The hulling and milling percent was also increased under these combinations. The highest input cost, net profit and per rupee investment was found under 150:80:60 kg NPK ha-1 followed by application of 100:60:40 kg NPK ha-1 along with PM.
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Jaskulska, I., D. Jaskulski, and M. Kobierski. "Effect of liming on the change of some agrochemical soil properties in a long-term fertilization experiment." Plant, Soil and Environment 60, No. 4 (2014): 146–50. http://dx.doi.org/10.17221/850/2013-pse.
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For 10 years (1999&ndash;2008) there was investigated the effect of liming on soil pH<sub>KCl</sub> and on organic carbon, available forms of macroelements and DTPA-extracted forms of some metals in 6 different fertilization objects in a long-term experiment set up in 1948: without fertilization (0), straw + NPK (STR NPK), NPK, farmyard manure (FYM), FYM NPK, FYM NPKMgCa. As a result of the application of 12.0 t/ha of lime (4.3 t Ca/ha), an increase was found not only in soil pH value but also in organic carbon, plant available phosphorus, zinc and copper contents and a decrease in manganese content. Despite significant changes in the soil properties, they still varied across the long-term fertilization objects.
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Sintia, Ema, and Halimatus Sa'diyah. "Pengaruh Pupuk NPK dan ZPT Air Kelapa Terhadap Hasil Tanaman Pakcoy (Brassica rapa L.)." Agrisintech (Journal of Agribusiness and Agrotechnology) 5, no. 1 (2024): 8–17. http://dx.doi.org/10.31938/agrisintech.v5i1.609.
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Pakchoy or Brassica rapa L. is called a plant with a distinctive taste and high nutritional content. Pakchoy productivity is still experiencing a decline and is inversely proportional to the increase in demand for pakchoy products. The research was carried out with the aim of finding out the effect of applying NPK fertilizer and coconut water PGR on the yield of pak choy plants. This research used factorial completely randomized design with 2 factors namely NPK fertilizer doses (0 kg/ha; 150 kg/ha; 300 kg/ha; 450 kg/ha) and coconut water PGR concentrations (0%; 25%; 50%; 75 %). The significant interaction effect is in the leaf chlorophyll variable with the highest value at the NPK fertilizer dose of 300 kg/ha and the PGR concentration of 0% coconut water was 43.2 per mm2. The significant interaction effect was also shown in the dry weight variable with the highest value at the NPK fertilizer dose of 450 kg/ha and the PGR concentration of 0% coconut water of 14.5 g. NPK fertilizer has significant and very significant effect on the research variables with the best treatment of 450 kg/ha. The PGR of coconut water treatment had no significant effect on the research variables, except for the variable number of leaves with the highest average at a concentration of 0%. Pakcoy atau Brassica rapa L. disebut sebagai tanaman dengan cita rasa yang khas dan kandungan nutrisi tinggi. Produktivitas pakcoy masih mengalami penurunan dan berbanding terbalik dengan peningkatan permintaan produk pakcoy. Penelitian dilakukam dengan tujuan untuk mengetahui pengaruh aplikasi pupuk NPK dan ZPT air kelapa terhadap hasil tanaman pakcoy. Penelitian ini menggunakan rancangan faktorial RAL dengan 2 faktor berupa dosis pupuk NPK (0 kg/ha; 150 kg/ha; 300 kg/ha; 450 kg/ha) dan konsentrasi ZPT air kelapa (0%; 25%; 50%; 75%). Pengaruh interaksi nyata pada variabel klorofil daun dengan nilai tertinggi pada dosis pupuk NPK 300 kg/ha dan konsentrasi ZPT air kelapa 0% sebesar 43,2 per mm2. Pengaruh interaksi nyata juga ditunjukkan pada variabel berat kering dengan nilai tertinggi pada dosis pupuk NPK 450 kg/ha dan konsentrasi ZPT air kelapa 0% sebesar 14,5 g. Pupuk NPK berpengaruh nyata dan sangat nyata terhadap variabel penelitian dengan perlakuan terbaik 450 kg/ha. Perlakuan ZPT air kelapa tidak berpengaruh nyata terhadap variabel penelitian, kecuali terhadap variabel jumlah daun dengan rata-rata tertinggi pada konsentrasi 0%.
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Borawska-Jarmułowicz, Barbara, Grażyna Mastalerczuk, Maria Janicka, and Barbara Wróbel. "Effect of Silicon-Containing Fertilizers on the Nutritional Value of Grass–Legume Mixtures on Temporary Grasslands." Agriculture 12, no. 2 (2022): 145. http://dx.doi.org/10.3390/agriculture12020145.
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The study was conducted to evaluate the influence of silicon application on the botanical composition of grass–legume mixtures as well as the nutritional value of individual species and mixtures. The two-factor field experiment was established in a split-block arrangement. The two grass–legume mixtures, consisting of Dactylis glomerata, Festulolium braunii and Trifolium pratense or Medicago x varia and grass mixture—Dactylis glomerata, Festulolium braunii and Lolium perenne, were sown on arable land. Silicon foliar and mineral NPK fertilization was applied in three variants: NPK (non-Si-fertilized), NPK+Si (Herbagreen), NPK+Si (Optysil). Changes in the botanical composition in the sward of mixtures during the study period were influenced by the competitiveness of individual plants and weather conditions, whereas the effect of foliar fertilization with silicon was only slightly marked. The nutritional value of individual species of grasses and legumes varied over the years and also depended on the application of silicon. The greatest content of crude protein (CP), irrespective of the species and variant of silicon fertilization, was noticed in years with no drought. Our research confirmed the beneficial effect of silicon fertilization, independent of weather conditions, on the CP content and on the reduction of crude fibre (CF), neutral detergent fibre (NDF) and acid detergent fibre (ADF) in plants, especially when Herbagreen was applied. The nutritional value of the mixtures under applied silicon fertilization depended on botanical composition. In the conditions of low rainfall, a large share of F. braunii and an approximately 20% contribution of T. pratense resulted in a higher content of CP. These results may be used in the fertilization practices of temporary grassland for enhancing nutritional value, especially crude protein content, and on the reduction of fibre in the sward.
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Govedarica-Lučić, Aleksandra, Sanid Pašić, Mirjana Jovović, and Alma Rahimić. "Effects of dose of pyrophyllite on yield and quality of the cabbage." Acta Scientiarum Polonorum Hortorum Cultus 20, no. 5 (2021): 25–32. http://dx.doi.org/10.24326/asphc.2021.5.3.
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In this study was researched the influence of the pyrophyllite as a nutrient, bio-stabilizer, soil conditioner, as the adsorbent in different combinations and correlated standard quantitative relations with mineral fertilizers (NPK 15 : 15 : 15), on the yield and nutritional value of Bravo cabbage (Brassica oleraceae var. capitata). Within the examined factor of fertilization treatment, the following variances were represented: a1 – 800 kg ha–1 NPK 15 : 15 : 15 (control plot), a2 – 800 kg ha–1 NPK 15 : 15 : 15 + 2200 kg ha–1 pyrophyllite, a3 – 800 kg ha–1 NPK 15 : 15 : 15 + 1700 kg ha–1 of pyrophyllite, a4 – 800 kg ha–1 NPK 15 : 15 : 15 + 1200 kg ha–1 of pyrophyllite, a5 – 800 kg ha–1 NPK 15 : 15 : 15 + 700 kg ha–1 of pyrophyllite. The purpose of this research was to determine the extent to which the components of the yield and nutritional quality of cabbage depend on the different applied doses of pyrophyllite. The results indicate the fact that the treatments with the application of higher participation of pyrophyllite had a positive effect on the weight and quality of the cabbage head in relation to the control variance.
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Ivani, Nanda, and Endang Sri Wahyuni. "Pengaruh Aplikasi Komposisi Pupuk NPK dan Konsentrasi Bakteri Fotosintesis terhadap Pertumbuhan dan Perkembangan Anggrek Bulan (Phalaenopsis amabilis)." JURNAL BIOSHELL 13, no. 2 (2024): 117–22. http://dx.doi.org/10.56013/bio.v13i2.3110.
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This study aims to determine the appropriate composition of NPK and concentration of photosynthetic bacteria on the growth and development of lunar orchids. This research was conducted from December to April 2023, in Sukorambi Village, Sukorambi District, Jember Regency, East Java Province. This study used a randomized block design (RBD) with a factorial pattern, the first factor was 3 treatments of NPK composition (K) and the second factor was 3 treatments of photosynthetic bacteria concentration (P) repeated 3 times. So that the total experiment was 27 plants. The treatment used was K1 = NPK 1:1:1; K2 = NPK 1.5:1:1; K3 = NPK 2:1:1 and P0 = control; P1 = 2.5ml/l; P2 = 5 ml/l. The test was carried out with the F test with analysis of variance (ANOVA), if there is a significant difference (F-count value> F-table) then proceed with the 5% DMRT test. The results showed that the composition of NPK and photosynthetic bacteria gave a significant interaction on leaf length. However, they were not significantly different in leaf width, number of leaves, root length, number of roots, and fresh weight.
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Sher, Ahmad, Muhammad Adnan, Abdul Sattar, et al. "Combined Application of Organic and Inorganic Amendments Improved the Yield and Nutritional Quality of Forage Sorghum." Agronomy 12, no. 4 (2022): 896. http://dx.doi.org/10.3390/agronomy12040896.
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The use of organic amendments is seen to be a promising method for enhancing crop productivity and soil health. Therefore, this study was performed for two consecutive years (2019 and 2020) to determine the effects of organic biochar (BC), sugar industry press mud (MUD), and poultry manure (PM) combined with inorganic amendments on the yield and nutritional quality of forage sorghum at the College of Agriculture, Bahauddin Zakariya University, Bahadur sub-campus, Layyah, Pakistan. The treatments were comprised of the following: control (no inorganic or organic amendments added); recommended dose of NPK (59:72:30 kg ha−1); half dose of NPK (29.5:36:15 kg ha−1); recommended dose of poultry manure (PM) at 5 t ha−1; recommended dose of press mud (MUD) at 40 t ha−1; recommended dose of biochar (BC) at 11 t ha−1; BC + half NPK; MUD + half NPK; PM + half NPK; PM + BC + half NPK; PM + MUD + half NPK; BC + MUD + half NPK; PM + BC + MUD + half NPK. The treatments were carried out in a triplicate randomized complete block design. Results revealed that combined application of PM + BC + MUD + 1/2 NPK significantly enhanced the plant height (201 cm), number of leaves (17), stem diameter (18 mm), stem dry weight (201.7 g), leaf dry weight (30.4 g), leaf area (184.3 cm2), green forage yield (31.8 Mg ha−1), and dry biomass yield (12.7 Mg ha−1) compared with the control treatment. Forage quality traits, including crude protein (CP), brix percentage, acid detergent fiber (ADF), and acid detergent lignin (ADL), showed maximum value with the combined application of PM + BC + MUD + 1/2 NPK. ADF and ADL are linked with lower digestibility; therefore, it was concluded that the combined application of PM + BC + MUD + 1/2 NPK can improve the productivity, dry biomass yield, and CP of sorghum, but reduces the digestibility under semi-arid conditions, such as those in Central Pakistan.
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VlKAS GUPTA, R.S. SHARMA, and VISHWAKARMA. "Long-term effect of integrated nutrient management on yield sustainability and soil fertility of rice (Oryza sativa)-wheat (Triticum aestivum) cropping system." Indian Journal of Agronomy 51, no. 3 (2001): 160–64. http://dx.doi.org/10.59797/ija.v51i3.4998.
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A long-term experiment was conducted on integrated nutrient management in rice (Oryza sativa)-wheat (Triti- cum aestivum L. emend. Fiori & Paol.) system at Jabalpur (Madhya Pradesh) since rainy (kharif) season 1987-88 to maintain the sustainable and high grain yields of this system without degradation of soil health under irrigated production system. The present paper deals with the studies conducted during the 2002-03 and 2003-04. Substituion of 50% N by green leaf manuring with sunnhemp (Crotalaria juncea L.) attained highest system pro- ductivity (33.12 kg grainlhdday). While determining the sustainability yield index (SYI), the value was also maxi- mum with 50% NPK + 50% N through green manuring with sunnhemp to rice, followed by 100% NPK to wheat. Maximum soil available nitrogen, phosphorus, potassium, sulphur and zinc, and minimum bulk density were no- ticed with substitution of 50% N by green manure. However, the pH value and EC were almost constant in all the treatments. lntegrated use of 50% NPK and 50% N through green manuring of sunnhemp to rice followed by 100% NPK to wheat also fetched the maximum net monetary returns (Rs 34,403lhdyear) with the benefit: cost ratio 2.40.
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Susetyo, Agus Hary, Syahrul Sariman, and Nur Hadijah Yunianti. "Analisis Nilai CBR Dan Permeabilitas Tanah Lempung Yang Distabilisasi Dengan Fertilizer Di Desa Alam Buana Kabupaten Luwu Timur." Jurnal Penelitian Teknik Sipil Konsolidasi 2, no. 2 (2024): 188–93. https://doi.org/10.56326/jptsk.v2i2.3450.
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In general, clayey soil has low bearing capacity; therefore, clayey soil needs to be improved in terms of its bearing capacity before constructing anything on it. This research aims to utilize fertilizer to enhance the CBR (California Bearing Ratio) and reduce the permeability of clayey soil. One way to improve clayey soil is by incorporating fertilizer as a soil stabilization material, by conducting CBR and Permeability Tests. Urea fertilizer readily dissolves in water and exhibits easy water absorption properties (hygroscopic). On the other hand, NPK fertilizer is a compound fertilizer containing nitrogen (N), phosphorus (P), and potassium (K) in varying compositions, with each element represented by the initial letter of its name (N, P, and K). In this study, 10% Urea is added to the soil, and there is variation in the amount of NPK, namely 0%, 5%, 10%, and 15%. The research results indicate that with the addition of NPK fertilizer, the CBR value continues to increase compared to the original soil and soil with only urea mixture. Meanwhile, in the Permeability Test, with each addition of NPK fertilizer, the coefficient of permeability value experiences a decrease.
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Desi, Petronela, Ahmad Raksun, I. Gde Mertha, and Prapti Sedijani. "The Effect of NPK Fertilizer and Banana Peel Liquid Organic Fertilizer on The Growth of Red Chili (Capsicum annum L)." Jurnal Biologi Tropis 25, no. 2 (2025): 2203–9. https://doi.org/10.29303/jbt.v25i2.9243.
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Chili plants have a high selling value when the supply of goods decreases due to late harvests in red chili centers in various regions. This can trigger Indonesian farmers to cultivate more quality chili plants because they have high economic value. This research aims to determine the effect of NPK fertilizer and banana peel liquid organic fertilizer on the growth of red chili (Capsicum annum L) and to assess the impact of the combination of NPK fertilizer and banana peel liquid organic fertilizer on red chili. This study employed an experimental approach, with data collected by assessing plant growth. NPK fertilizer had no discernible effect on the height or quantity of leaves on red chili peppers, but it did have an impact on leaf area, fresh weight, and dry weight. Red chili pepper plants' height, leaf count, leaf area, fresh weight, and dried weight were all unaffected by the application of a liquid organic fertilizer made from banana peels. Red chili pepper plant height and leaf count were not significantly impacted by the combination of NPK fertilizer and liquid organic fertilizer generated from banana peels; but, leaf area, fresh weight, and dry weight were.
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Sumarna, Ade, Irianto Irianto, and Budiyati Ichwan. "Respons tanaman bawang merah terhadap pemberian plant growth promoting rhizobacteria dan pupuk NPK 15-10-12." Jurnal AGRO 11, no. 1 (2024): 75–90. http://dx.doi.org/10.15575/34157.
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Shallots are a horticultural commodity with high economic value. The high demand is reversed to the low production. The continuous and excessive use of NPK fertilizer in shallot cultivation will have an impact on decreasing land productivity. Plant Growth Promoting Rhizobacteria (PGPR) is an alternative to reduce this impact. The research aimed to examine the response of shallot plants to application of PGPR and several dosage levels of NPK 15-10-12 fertilizer, and to obtain the best treatment. The research was carried out from July to September 2023 in Sandaran Galeh Village, Sungai Penuh City, Jambi Province at an altitude of 836 m above sea level using a Randomized Block Design. The experiment used several concentrations of PGPR and doses of NPK 15-10-12 i.e. No PGPR and No NPK, NPK 525 kg ha-1, PGPR 5 mL L-1 + NPK 400 kg ha-1, PGPR 10 mL L-1 + NPK 275 kg ha-1, PGPR 15 mL L-1 + NPK 150 kg ha-1, and PGPR 20 mL L-1. Data were analyzed using ANOVA and DMRT test at the 5% level. The results showed that PGPR 15 mL L-1 + NPK 150 kg ha-1 produced the best growth response and yield in an effort to reduce the use of NPK 15-10-12 fertilizer. The PGPR can be applied to promote eco-green in shallot productivity. Bawang merah (Allium ascalonicum L.) termasuk komoditas hortikultura yang bernilai ekonomi tinggi. Namun, permintaan yang tinggi tidak diiringi dengan produksi yang optimum. Penggunaan pupuk NPK dalam budidaya bawang merah secara terus-menerus dan berlebihan akan berdampak menurunnya produktivitas lahan. Plant Growth Promoting Rhizobacteria (PGPR) menjadi alternatif dalam mengurangi dampak tersebut. Penelitian ini dilakukan untuk mengkaji respon tanaman bawang merah terhadap pemberian beberapa konsentrasi PGPR dan beberapa taraf dosis pupuk NPK 15-10-12, serta mendapatkan perlakuan terbaiknya. Penelitian dilaksanakan dari bulan Juli hingga September 2023 di Desa Sandaran Galeh Kota Sungai Penuh Provinsi Jambi dengan ketinggian 836 m dpl dengan menggunakan Rancangan Acak Kelompok. Perlakuan yang digunakan yaitu beberapa konsentrasi PGPR dan dosis NPK 15-10-12, yaitu tanpa PGPR dan tanpa NPK, NPK 525 kg ha-1, PGPR 5 mL L-1 + NPK 400 kg ha-1, PGPR 10 mL L-1 + NPK 275 kg ha-1, PGPR 15 mL L-1 + NPK 150 kg ha-1, dan PGPR 20 mL L-1. Data dianalisis menggunakan ANOVA dan uji lanjut DMRT pada taraf 5%. Hasil penelitian menunjukkan bahwa penggunaan PGPR 15 mL L-1 + NPK 150 kg ha-1 menghasilkan respon pertumbuhan dan hasil terbaik dalam upaya pengurangan penggunaan pupuk NPK 15-10-12. PGPR dapat diaplikasikan untuk mendukung produktivitas bawang merah yang ramah lingkungan.
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Pijush, karmakar, and Wahidul Islam Md. "Effect of NPK Briquette on the Growth and Yield of Boro Rice (BRRI Dhan29)." International Journal of Multidisciplinary Informative Research and Review (IJMIRR) Volume 1, Issue 1 (2020): 104–17. https://doi.org/10.5281/zenodo.4309803.
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<em>An experiment was conducted at the Research Farm, Sher-e-Bangla Agricultural University, Dhaka during the period from November 2016 to May2017 to study the effect of NPK briquette on the growth and yield of boro rice (BRRI dhan29). The experiment consisted of eight treatments viz.T1 (No fertilizer; Control), T2 (RFD (Recommended fertilizer dose), T3 (2 NPK briquette of 2.40 sized), T4 (1 NPK briquette of 2.40 sized), T5 (3 NPK briquette of 2.40 sized), T6 (2 NPK briquette of 2.40 sized + 1 top dressing at tiller stage @ ¼ of RDF), T7 (1 NPK briquette of 2.40 sized + 1 top dressing at tiller stage @ ¼ of RDF) and T8 (3 NPK briquette of 2.40 sized + 1 top dressing at tiller stage @ ¼ of RDF). BRRI dhan29 was used as a test crop for the experiment. The experiment was laid out following Randomized Complete Block Design (RCBD) with three replications. Results showed that the highest number of tillers hill-1 (21.56), number of effective tillers hill-1 (20.66), number of filled grains panicle-1 (116.36), number of total grains panicle-1 (120.98), panicle length (24.62 cm), grain yield (8.44 t ha-1), straw yield (9.88 t ha-1), biological yield (18.32 t ha-1) and harvest index (46.07%) were found from the treatment, T3 (2 NPK briquette of 2.40 sized). The lowest results on the respected parameters were found from T1 (No fertilizer; Control). The lowest number of non-effective tillers hill-1(0.90) and number of unfilled grains panicle-1 (4.62) was found from the treatment, T3 (2 NPK briquette of 2.40 sized). The highest value of the N, P and K content in post-harvest soil was obtained from treatment T8 (3 NPK briquette of 2.40 sized + 1 top dressing at tiller stage @ ¼ of RDF) and T1 (No fertilizer; Control) treated soil showed the lowest.</em>