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Journal articles on the topic 'Potassium fertilizer'

Author: Grafiati

Published: 4 June 2021

Last updated: 26 July 2025

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1

Aryani, Ida, Gamal Abdul Nasser, Dali Dali, et al. "Potensi Peningkatan Hasil Jagung Manis (Zea Mays Saccharata Sturt) Melalui Kombinasi Dosis Pupuk Nitrogen dan Kalium." Journal on Education 5, no. 4 (2023): 16276–85. http://dx.doi.org/10.31004/joe.v5i4.2773.

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This study aims to obtain the right dosage of nitrogen and potassium fertilizers as well as the interaction between nitrogen and potassium in increasing the growth and yield of sweet corn (Zea mays var. saccharata). This study used a factorial randomized block design consisting of 2 treatment factors, namely nitrogen and potassium fertilizer treatment, with 3 replications. Factor I Nitrogen fertilizer treatment with the dose: N0: Without nitrogen fertilizer (control), N1: Nitrogen fertilizer 150 kg/ha Urea, N2: Nitrogen fertilizer 300 kg/ha Urea. Factor II Potassium Fertilizer : K0 : Without P

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2

AL-Sheikh, Mohammad Ahmad, Omar Abdullah Abdulrazzak, and Taha Hammadi Al-Khalifa. "Effect of Adding Potassium and Organic Fertilizers on the Soil NPK Content and the Productivity of maize (Zea mays L.)." Kufa Journal for Agricultural Sciences 16, no. 3 (2024): 152–63. http://dx.doi.org/10.36077/kjas/2024/v16i3.15433.

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The integrated use of organic and mineral fertilizers is a practical and good way to preserve and sustain soil fertility, which results in increased availability of nutrients in the soil and their absorption by plants, thus increasing crop productivity. Due to the fixation of potassium in the soil, it is necessary to work to increase the vitality of agricultural soil by adding fertilizers. Organic potassium is an important means of increasing the availability of macro- and micro-nutrients. Current research was carried out in a private farm in Deir Ezzor province during the summer season of 202

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3

Ginting, Eko Noviandi, Syaiful Anwar, Budi Nugroho, and Suroso Rahutomo. "Reducing potassium leaching in peat soil using potassium zeolite-based fertilizer (ZEKA)." SAINS TANAH - Journal of Soil Science and Agroclimatology 22, no. 1 (2025): 244. https://doi.org/10.20961/stjssa.v22i1.93266.

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Using peat soils for agricultural purposes is challenged by low fertilizer efficiency, especially potassium chloride (KCl). On the other hand, zeolite is a potential material to produce slow-release fertilizers to improve fertilizer efficiency. This study aims to evaluate and compare potassium leaching from a conventional potassium fertilizer, KCl, and a zeolite-based potassium fertilizer, ZEKA, on peat soil columns. The ZEKA fertilizer was produced using two different zeolite particle sizes: coarse zeolite (ZC) and fine zeolite (ZF). The K leached from the fertilizers was measured in a peat s

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4

Hoàng Mai Thảo, Hoàng Văn Thông, Nguyễn Văn Toàn, and Trần Thành Vinh. "EFFECT OF POTASSIUM FERTILIZER ON GROWTH, DEVELOPMENT AND QUALITY OF ORANGE TREES IN YEN BAI PROVINCE." Tạp chí Khoa học và Công nghệ Trường Đại học Hùng Vương 33, no. 4 (2023): 70–76. http://dx.doi.org/10.59775/1859-3968.184.

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The experiment to evaluate the effects of potassium fertilizer on growth, development and quality of orange trees was arranged in Tran Yen district of Yen Bai province in 2021 and 2022 with 3 types of potassium fertilizer: Potassium chloride, Potassium sulfate, potassium nitrate and fertilizer amount of 1,8kg K20/tree. The results show that different types of potassium fertilizers will have different effects on orange yield and quality. Applying K2SO4 fertilizer to BH orange trees increase fruiting rate (reaching 2.3%) and productivity (reaching 24.43 tons/ha), high sweetness (brix level reach

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5

P, Suarya, Sudiarta I. W, and Krisjayanto H. "PATTERN OF POTASSIUM RELEASE FROM SLOW RELEASE FERTILIZER POTASSIUM SULFATE-BENTONITE FERTILIZER." Jurnal Ilmu Pendidikan Indonesia 11, no. 1 (2023): 34–41. http://dx.doi.org/10.31957/jipi.v11i1.2750.

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Potassium is a macro nutrient element that is needed by plants. Potassium plays a role in plant metabolism, maintains turgor, and forms stronger stems. Sadly. Potassium is easily lost through washing because it is easily soluble in water. This is what triggers plants to often experience a lack of potassium. Efficiency in the use of potassium fertilizers can be increased through the formulation of fertilizers made in the form of slow release (Slow Release Fertilizer), namely by controlling the solubility of the substance in water through fertilizer coating. The purpose of this study was to dete

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6

Hu, Wenjie, Jin Wang, Qunxian Deng, et al. "Effects of Different Types of Potassium Fertilizers on Nutrient Uptake by Grapevine." Horticulturae 9, no. 4 (2023): 470. http://dx.doi.org/10.3390/horticulturae9040470.

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Potassium (K) is the most important element for fruit quality improvement. This study aimed at determining the best K fertilizer type that can promote grape growth and nutrient uptake. Specifically, four types of K fertilizers (complex fertilizer, potassium nitrate, potassium sulfate, and potassium dihydrogen phosphate) were applied to grapevines grown in plastic pots, and then their effects on grape growth and nutrient uptake were explored. Results showed that the complex fertilizer and potassium nitrate treatments increased the biomass of the grapevine plants, whereas the other fertilizers h

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7

Rosawanti, Pienyani. "Kandungan Unsur Hara Pada Pupuk Organik Tumbuhan Air Lokal." Daun: Jurnal Ilmiah Pertanian dan Kehutanan 6, no. 2 (2020): 140–48. http://dx.doi.org/10.33084/daun.v6i2.1260.

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Water hyacinth, giant salvinia and water lettuce are widely available in Central Kalimantan that can be used as organic fertilizer. This study aims to determine the nutrient content of solid and liquid organic fertilizers in water hyacinth, giant salvinia and water lettuce fertilizers. The results showed that solid organic fertilizer/compost and water hyacinth, water lettuce and giant salvinia liquid fertilizer have nutrient content needed by plants. In solid fertilizers, the Nitrogen of giant salviniacontent was 2.43% and lack of the minimum standard of solid organic fertilizer, while Phospor

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8

Setyowati, E., Samanhudi, and M Rahayu. "Shallot Growth on Organic Nano NPK Fertilizer Application." IOP Conference Series: Earth and Environmental Science 1490, no. 1 (2025): 012023. https://doi.org/10.1088/1755-1315/1490/1/012023.

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Abstract The level of shallot crop productivity in Indonesia still needs to be improved. To increase shallot productivity, fertilization innovation using nano organic fertilizer is needed. This research studies the effect of nano organic NPK fertilizer on plant growth shallot using a completely randomized design (CRD) with two factors, namely shallot varieties and doses of nano organic NPK fertilizer. The varieties used were Crok Kuning and Tajuk, while the fertilizer doses used were chemical fertilizer Nitrogen 180; Phosphorus 120; Potassium 60 kg/ha, organic nano NPK fertilizer Nitrogen 140;

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9

Dzida, Katarzyna, Zenia Michałojć, Zbigniew Jarosz, Karolina Pitura, and Natalia Skubij. "EFFECT OF POTASSIUM FERTILIZATION ON YIELD, GROWTH AND CHEMICAL COMPOSITION OF BASIL HERB." Acta Scientiarum Polonorum Hortorum Cultus 17, no. 6 (2018): 135–45. http://dx.doi.org/10.24326/asphc.2018.6.14.

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In the cultivation of herbal plants, besides the size of the crop, the quality of obtained raw material is extremely important, which is proven not only by the appearance and taste, but also biological value. Factors that affect these parameters include plant nutrition. The main nutrient affecting the correct course of metabolic processes in a plant is potassium. To obtain high yield in terms of quantity and quality, the nutritional requirements of plants must be met. The aim of the study was to determine the effect of potassium nutrition on the quality of basil herb. The experiment was establ

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10

Najm, Sahar Hamza, and Hayyawi Wewa Attia Al-Juthery. "Effect of Phosphorous, Potassium Nano-Fertilizers and Spraying of (Sepehr 4) Nano-Fertilizer and Carbon Nanotubes on the Growth and Yield of Rice (Oryza sativa L.)." IOP Conference Series: Earth and Environmental Science 1259, no. 1 (2023): 012016. http://dx.doi.org/10.1088/1755-1315/1259/1/012016.

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Abstract The purpose of this experiment is to compare the growth and yield of the Amber 33 cultivar of rice after being fertilised with nano-phosphorous and nano-potassium, as well as after being sprayed with carbon nanotubes and nano-synthetic fertiliser (Sepehr 4) (K+Fe+Zn+Mn). Between June 15 and November 23, 2022, researchers in Babylon province, Iraq, combed through the area known as District 41-Al-Hussainiya, which is located to the south of the city of Hilla. Using a Randomised Complete Blocks Design (RCBD), two levels of phosphorus and potassium nano-fertilizers (0 and 10 kg.ha-1) were

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11

Nurlaela, Endah, Rina Devnita, and Yuliati Machfud. "RESPONS KETERSEDIAAN KALIUM, SERAPAN K DAN HASIL JAGUNG MANIS TERHADAP APLIKASI DOSIS PUPUK NK MAJEMUK PADA INCEPTISOLS." Jurnal Pertanian Agros 27, no. 1 (2025): 118–30. https://doi.org/10.37159/jpa.v27i1.37.

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Fertilization is an agrotechnical method to improve soil fertility, which is crucial in increasing sweet corn production in Indonesia. Nutrient limitations in the soil often contribute to low corn yields. Inorganic fertilizers, such as compound NK fertilizers can provide essential nutrients for sweet corn. This study aims to identify the effects of different doses of compound NK fertilizers on available potassium (K), potassium uptake, and sweet corn yield. The research was conducted from October 2019 to January 2020 at the Experimental Farm and Soil Chemistry and Plant Nutrition Laboratory, D

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12

HU, CHENG, SHUANG-LAI LI, YAN QIAO, DONG-HAI LIU, and YUN-FENG CHEN. "EFFECTS OF 30 YEARS REPEATED FERTILIZER APPLICATIONS ON SOIL PROPERTIES, MICROBES AND CROP YIELDS IN RICE–WHEAT CROPPING SYSTEMS." Experimental Agriculture 51, no. 3 (2014): 355–69. http://dx.doi.org/10.1017/s0014479714000350.

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SUMMARYLong-term fertilization experiment has been conducted since 1981 to study the effect of soil management practices on soil fertility, soil carbon and nitrogen sequestration, soil culturable microbe counts and crop yields at the Nanhu Experimental Station in the Hubei Academy of Agricultural Sciences (situated in the middle reach of the Yangtze River and the rice–wheat cropping system). The experiment was designed with the following eight treatments: (1) unfertilized treatment: Control; (2) inorganic nitrogen fertilizer treatment: N; (3) inorganic nitrogen plus inorganic phosphorus fertil

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13

Ali, Maha M. E., Spyridon A. Petropoulos, Daila AbdelFattah Fattah H. Selim, et al. "Plant Growth, Yield and Quality of Potato Crop in Relation to Potassium Fertilization." Agronomy 11, no. 4 (2021): 675. http://dx.doi.org/10.3390/agronomy11040675.

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The present work evaluated the effect of soil (S) and foliage (F) applied potassium on the growth, yield, and quality of potato plants. Potassium was added in soil at the recommended rate for all the treatments combining mineral fertilizers with K-feldspar and biofertilizers, while foliar spraying included the application of potassium citrate (PC), potassium silicate (PS), and monopotassium phosphate (MP). The obtained results showed that plant height was highest following treatment with 100% mineral potassium fertilizer under the foliar application of MP, while the content of P, K, and total

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14

Ying-hai, Li. "Quality of Reclaimed Domestic Water Irrigated Peppers - NPK Coupling Model and Optimized Combination Solution." Journal of Agricultural Science and Agrotechnolog 1, no. 1 (2022): 1–12. http://dx.doi.org/10.56391/jasa.2022.1004.

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Focusing on the coupling between the NPK content in Reclaimed domestic water irrigated peppers and capsaicin, a field experiment in the three-factor, five-level quadratic general revolving combination design was conducted for an in-depth analysis of capsaicin content coupling model by testing the significance of regression equation and coefficient with regression equation. The test result shows that : (1) factors affecting the content of capsaicin are in order of nitrogen fertilizer application level (x1) > nitrogen fertilizer application level (x2) > potassium fertilizer application lev

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15

Wang, Manman, Youliang Ye, Xv Chu, et al. "Responses of Garlic Quality and Yields to Various Types and Rates of Potassium Fertilizer Applications." HortScience 57, no. 1 (2022): 72–80. http://dx.doi.org/10.21273/hortsci15984-21.

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Potassium (K) is a critical plant nutrient that determines quality in a myriad of crops and increases production yields. However, excessive application of various types of K fertilizers can decrease both the food quality and yields, which translates as economic losses and food safety issues. The objectives of this study were to 1) elucidate the impacts of different application rates of various K fertilizers on garlic, with the aim to identify the optimal and most economical K fertilizer dosage and 2) compare the effects of applying two common K fertilizers (KCl and K2SO4) on garlic, to determi

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16

Andeshmand, Abdul Bari. "Effect of Different Levels of Nitrogen, Phosphorus and Potassium Fertilizers on Yield of Cucumber (Cucumis sativus L.) Under The Climatic Conditions of Takhar Province." Journal for Research in Applied Sciences and Biotechnology 3, no. 5 (2024): 35–38. http://dx.doi.org/10.55544/jrasb.3.5.7.

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The experiment was carried out in the research farm of Agriculture Faculty, Takhar University under the title of the effect of nitrogen fertilizer with different amounts of phosphorus and potassium fertilizers on cucumber yield under the climatic conditions of Takhar Province, Afghanistan. The experiment was laid out in a Randomized Complete Block Design (RCBD) with three replications and four treatments. Treatments T1 without of any fertilizer, T2 nitrogen 80 kg ha-1, phosphorus fertilizer 100 kg ha-1, and potassium fertilizer 85 kg ha-1. T3 nitrogen fertilizer 80 kg ha-1, phosphorus fertiliz

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17

Kaca, I. Nyoman, Luh Suariani, Ni Ketut Etty Suwitari, I. Wayan Eka Putra Ariawan, and I. Made Adi Wiratama. "The Use of Pig Manure Fertilizer on the Growth, Production, Protein Content, and TDN of Pakchong Grass." Formosa Journal of Multidisciplinary Research 3, no. 11 (2024): 4289–304. https://doi.org/10.55927/fjmr.v3i11.11941.

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Manure is a fertilizer that comes from a mixture of livestock waste, urine, and leftover livestock feed. Pig manure can be used as fertilizer because it contains Nitrogen, phosphorus and potassium. Solid pig manure contains quite high Nitrogen nutrients of 0.95%, Phosphorus 0.35%, and Potassium 0.40%, so that pig manure is effective as an organic fertilizer that will be beneficial for plant growth. This study aims to see the effect of the use of pig manure fertilizer on the growth, production, nutritional quality and TDN of Pakchong Grass. A Randomized Block Design (RAK) was used with five tre

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18

Wen, Mingxia, Ji Zhang, Yongqiang Zheng, and Shilai Yi. "Effects of Combined Potassium and Organic Fertilizer Application on Newhall Navel Orange Nutrient Uptake, Yield, and Quality." Agronomy 11, no. 10 (2021): 1990. http://dx.doi.org/10.3390/agronomy11101990.

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In this study, we investigated the effects of the combined application of different doses of potassium and organic fertilizers on the nutrient uptake, yield, and quality of Newhall navel oranges (Citrus sinensis Osb. cv.). The citrus trees were treated with potassium fertilizer alone or with one of three combinations of organic and potassium fertilizers. Spring shoots, autumn shoots, and fruit were collected when they reached maturity, and the relevant indexes were determined by conventional methods. The soil carbon flux was measured 15, 35, 65, and 95 days after fertilizer application by a so

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Reis, Aline Cristina de Souza, Tiago Roque Benetoli da Silva, Affonso Celso Gonçalves-Júnior, Deonir Secco, Charline Zaratim Alves, and Reginaldo Ferreira Santos. "Organic and Mineral Fertilizer on the Initial Development and Nutrition of Jatropha." Journal of Agricultural Science 10, no. 10 (2018): 274. http://dx.doi.org/10.5539/jas.v10n10p274.

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Jatropha (Jatropha curcas L.) is an herbaceous plant, perennial, belonging to the family of Euphorbiaceaes. Jatropha&rsquo;s extract is used for the harvest of fruits, high amount of nutrients and, if not properly fertilized, can lead to the impoverishment of the soil over the years of cultivation. Thus, in this present work, we have a concern with the importance of fertilization. The experiment was conducted under field conditions in the 2014/2015 agricultural year, in S&atilde;o Jorge do Patroc&iacute;nio, State of Parana, Brazil. The experiment was conducted in a randomized bloc

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20

Nafis, Fika Fatwa Anin, Djoko Kustono, and Anindya Hapsari. "Analysis of Nitrogen, Phosphorus and Potassium Concentration in Modified Liquid Organic Fertilizers of Vegetable Waste, Charcoal and Snails." Preventia : The Indonesian Journal of Public Health 8, no. 1 (2023): 58. http://dx.doi.org/10.17977/um044v8i12023p58-61.

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Nitrogen, phosphorus and potassium concentration in liquid organic fertilizer can be obtained from organic materials. Liquid organic fertilizer can be made from vegetable waste, charcoal, and gold snail (Pomacea canaliculata L.). This study aimed to know the concentration of nitrogen, phosphorus and potassium in liquid organic fertilizers of waste vegetable, charcoal and snail. Methods used to test nitrogen was the Kjeldahl method, while potassium and phosphorus tested with spectrophotometer. The results showed that the concentration of nitrogen, phosphorus and potassium in liquid organic fert

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21

Wang, Jin, Yuhang Lu, Xuemei Zhang, et al. "Effects of Potassium-Containing Fertilizers on Sugar and Organic Acid Metabolism in Grape Fruits." International Journal of Molecular Sciences 25, no. 5 (2024): 2828. http://dx.doi.org/10.3390/ijms25052828.

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To identify suitable potassium fertilizers for grape (Vitis vinifera L.) production and study their mechanism of action, the effects of four potassium-containing fertilizers (complex fertilizer, potassium nitrate, potassium sulfate, and potassium dihydrogen phosphate) on sugar and organic acid metabolism in grape fruits were investigated. Potassium-containing fertilizers increased the activity of sugar and organic acid metabolism-related enzymes at all stages of grape fruit development. During the later stages of fruit development, potassium-containing fertilizers increased the total soluble s

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Sun, Ping. "Effects of rapeseed cake fertilizer on soil bacterial diversity and community structure in peach orchards." Pakistan Journal of Agricultural Sciences 60, no. 01 (2023): 01–08. http://dx.doi.org/10.21162/pakjas/23.92.

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In the cultivation process, the application of organic fertilizers instead of chemical fertilizers can effectively improve soil structure, soil fertility, nutrient absorption, and fruit quality. In this study, the effects of potassium fulvic acid and compound microbial inoculant in rapeseed cake fertilizer on soil bacteria in peach orchard were investigated. The results showed that the application of rapeseed cake fertilizer significantly increased the abundance of beneficial bacteria in the soil. The results of functional prediction showed that rapeseed cake fertilizer and potassium fulvic ac

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23

Mohammed, Saad A., and Mohammed H. Naile. "EFFECT OF MYCORRHIZA INOCULATION AND BIOZYME SPRAY ON THE CONTENT OF LEAVES AND FRUITS OF NUTRIENTS ELEMENTS OF SUMMER SQUASH." Diyala Agricultural Sciences Journal 12, special (2020): 558–70. http://dx.doi.org/10.52951/dasj.20121047.

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A experiment of field with conducted for the spring season 2018 on summer squash in the fields of the Department of Horticulture and Garden Engineering, College of Agriculture, Al-Anbar University to find out the effect of adding bio fertilizer and spraying with Biozyme as bio fertilizers were added at four levels1-Without adding (comparison) 2- Complete chemical fertilizer recommendation + 50 g poultry fertilizer 3- Half fertilizer recommendation + 50 g poultry fertilizer + 50g bio fertilizer 4- 50 g poultry fertilizer + 50 g bio fertilizer and Number of times sprayed with the Biozyme it was

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24

BONNEAU, X., IRFAN HARYANTO, and TRIYONO KARSIWAN. "COCONUT HUSK ASH AS A FERTILIZER FOR COCONUT PALMS ON PEAT." Experimental Agriculture 46, no. 3 (2010): 401–14. http://dx.doi.org/10.1017/s0014479710000025.

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SUMMARYWe demonstrated experimentally that coconut husk ash is an excellent mineral fertilizer for immature coconut hybrids on developed peat, providing potassium (K) in particular. Coconut husk ash performed as well as potassium chloride (KCl) in a proportion of 2–2.5 to 1. At four years, 99% of coconut palms fertilized with husk ash, 92% of coconut palms fertilized with KCl and 26% of control palms were sexually differentiated. The cumulative yield in the first two harvesting years more than trebled between control palms (26 nuts per tree) and the palms fertilized with KCl (93 nuts per tree)

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25

Rahma, Sitti, Burhanuddin Rasyid, and Muh Jayadi. "PENINGKATAN UNSUR HARA KALIUM DALAM TANAH MELALUI APLIKASI POC BATANG PISANG DAN SABUT KELAPA." Jurnal Ecosolum 8, no. 2 (2019): 74. http://dx.doi.org/10.20956/ecosolum.v8i2.7873.

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In Indonesia, there is not much use of potassium fertilizer for plants. Generally, farmers are more familiar with nitrogen and phosphorus fertilizers than potassium. This is caused potassium is expensive and hard to find, so there should be another alternative for easily and economic potassium fertilizer. This study aims to analyze the effect of organic liquid fertilizer produced from banana stem and coconut fiber to increase Potassium in soil and maize growth on ex-cassava cultivation land in Moncongloe Bulu Village, Moncongloe District, Maros Regency. The study used randomized block design w

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26

M. A., Essien-Ibok,, George, U. U., and Ituen, A. M. "Comparative Analysis of Phytoplankton Communities in Newly Inundated Ponds Using Organic and Inorganic Fertilizers." Asian Journal of Biology 20, no. 7 (2024): 64–77. http://dx.doi.org/10.9734/ajob/2024/v20i7424.

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A comparative study on the communities of phytoplankton in two newly inundated ponds was carried out from September 2023 to October 2023.The study was conducted in a completely random design experimental setup with two treatments, each replicated twice using organic (chicken manure) and inorganic fertilizer (di-a1mmonium phosphate fertilizer, (20:10:10) (2.5kg for each) fertilizers. Out of 1114 individuals of phytoplankton identified, 611 were from the organic fertilizer- treated tank, while 503 individuals were from the inorganic fertilizer- treated tank. The highest and the lowest phytoplank

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27

Hamandi Al-Salmani, Younes M., and Ehsan F. Saleh Al-Douri. "The Chlorophyll, Macronutrients and Carbohydrates in Apple Leaves “Crystal Variety” as Affected by the Addition of Compound Fertilizer and Humus." IOP Conference Series: Earth and Environmental Science 1371, no. 4 (2024): 042024. http://dx.doi.org/10.1088/1755-1315/1371/4/042024.

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Abstract The experiment was conducted on two-year-old apple trees of the ‘Crystal’ variety, grafted onto quince rootstock, planted in an orchard at the Horticulture and Landscape Engineering Department, College of Agriculture, Tikrit University. The orchard had dimensions of 3.5 × 4 meters and was irrigated by drip irrigation. The trees were fertilized with two fertilizers: first, NPK compound fertilizer at four levels - no fertilization as a control, balanced 40:40:40, high nitrogen 60:40:40, high potassium 40:40:60 - at a rate of 200 grams per tree for each. The second fertilizer was Hummix

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Zakarya, Irnis Azura, Nor Anis Nadhirah Md Nasir, Najiha Razali, Mahamad Hakimi Ibrahim, and Madalina Boboc. "Assessment of Water Quality and Nutrient Uptake of Azolla in Different Fertilizers." IOP Conference Series: Earth and Environmental Science 1216, no. 1 (2023): 012039. http://dx.doi.org/10.1088/1755-1315/1216/1/012039.

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Abstract The improvement of water quality through aquatic plants’ nutrient uptake is one of the crucial elements in achieving a sustainable ecosystem. Water quality is affected by a variety of variables, including dissolved oxygen concentrations, nutrient overabundance, bacterial populations, salt content, and the number of suspended particles in the water. This experiment was performed to evaluate the biological and biochemical characteristics of azolla using various fertilizers (compost food waste, cow dung, liquid fertilizer, mushroom block fertilizer). It also examined the ability and effe

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Ibiremo, O. S., O. S. O. Akanbi, and C. E. Ogbeide. "Effect of Site-Specific Application of N and K Fertilizers on Cashew Growth and Yield in Ochaja, Kogi State, Nigeria." International Journal of Plant & Soil Science 35, no. 19 (2023): 1716–21. http://dx.doi.org/10.9734/ijpss/2023/v35i193719.

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An experiment was conducted at the Ochaja Substation of the Cocoa Research Institute in Ibadan, Nigeria. Ochaja is located in the guina savanna zone of Nigeria. Plantation soil nutrient requirements were determined prior to applying the required fertilizers. The soil was deficient in nitrogen (N) and potassium (K), with values of 0.41 g/kg soil and 0.012 cmol/kg soil, respectively, at depths 0–40 cm. This value was used to calculate cashew fertilization rates of 54 kg N/ha and 84 kg K2O/ha. Based on these values, four treatment combinations of two rates of nitrogen fertilizer and two rates o

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30

Yakimenko, V. N. "Fixation of Potassium and Magnesium by the Soil of Agrocenoses." Агрохимия, no. 3 (March 15, 2023): 3–11. http://dx.doi.org/10.31857/s0002188123030134.

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It was found that the soil of the agrocenosis with a long-term deficit balance of potassium and magnesium recorded 60-70% of potassium introduced with fertilizer and 20-30% of magnesium. With a positive balance of these elements in the agrocenosis, the fixation of potassium by the soil decreased to 40, and magnesium - to 6-10%. The introduction of increasing doses of potassium fertilizer did not affect the soil level of the content of exchangeable magnesium, the use of magnesium fertilizers did not change the content of exchangeable potassium in the soil. The combined use of moderate doses of

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31

Ronga, Domenico, Mario Parisi, Luisa Barbieri, Isabella Lancellotti, Fernanda Andreola, and Cristina Bignami. "Valorization of Spent Coffee Grounds, Biochar and other residues to Produce Lightweight Clay Ceramic Aggregates Suitable for Nursery Grapevine Production." Horticulturae 6, no. 4 (2020): 58. http://dx.doi.org/10.3390/horticulturae6040058.

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The valorization of agro-industrial by-products is one of the key strategies to improve agricultural sustainability. In the present study, spent coffee grounds and biochar were used as pore forming agents in the realization of lightweight clay ceramic aggregates that were used as sustainable fertilizers, in addition to tailored glass fertilizer containing phosphorous (P) and potassium (K) and nitrogen (N) synthetic fertilizer, for nursery grapevine production. The obtained fertilizers were assessed in a pot experiment for the fertilization of bare-rooted vines. Unfertilized (T0) and fertilized

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Broschat, T. K., D. R. Sandrock, M. L. Elliott, and E. F. Gilman. "Effects of Fertilizer Type on Quality and Nutrient Content of Established Landscape Plants in Florida." HortTechnology 18, no. 2 (2008): 278–85. http://dx.doi.org/10.21273/horttech.18.2.278.

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In a series of three experiments, st. augustinegrass (Stenotaphrum secundatum ‘Floratam’), areca palm (Dypsis lutescens), canna (Canna × generalis ‘Richard Wallace’), pentas (Pentas lanceolata), allamanda (Allamanda cathartica ‘Hendersoni’), and nandina (Nandina domestica) were grown on highly leached sand soils in two locations in Florida. They were fertilized with typical turfgrass fertilizers having high nitrogen (N)-to-potassium (K) ratios and no magnesium (Mg), or several types of landscape palm fertilizers having low N:K ratios and 100% of their N, K, and Mg in controlled release form. S

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Hospodarenko, Н. M. "POTASSIUM BALANCE IN THE SOIL AND THE EFFECTIVENESS OF POTASSIUM DEFICIENCY SYSTEM OF FERTILIZATION." Bulletin of Uman National University of Horticulture 2 (December 2020): 42–46. http://dx.doi.org/10.31395/2310-0478-2020-2-42-46.

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The influence of long-term application of potassium-deficient fertilizer system in the field crop rotation (winter wheat, corn, spring barley, soybeans) on podzolic heavy loam black earth of the Right-Bank Forest-Steppe of Ukraine on potassium content in plants, its costs for formation of one unit of the harvest was determined; potassium balance was calculated and the effectiveness of different doses of potassium fertilizers was comprehensively assessed. It was found that the potassium content in grains and seeds of agricultural crops under the influence of potassium fertilizers varies by no m

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Wihardjaka, A. "PERAN JERAMI PADI DALAM MEMPERBAIKI HASIL GABAH DAN SERAPAN KALIUM DI LAHAN SAWAH TADAH HUJAN DI KABUPATEN PATI, JAWA TENGAH." Agric 27, no. 1 (2016): 15. http://dx.doi.org/10.24246/agric.2015.v27.i1.p15-22.

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<p>As agricultural waste, rice straw could be used to substitute potassium fertilizer in food crops farming system, especially rice crop. The use of rice straw in rainfed lowland areas is not significant to substitute potassium fertilizer which is relatively higher cost. The field experiment was conducted to determine potassium uptake pattern of rainfed lowland rice in light textural Endoaquepts through using straw and inorganic fertilizers. The experiment was arranged using split plot design where rice straw as main plot and potassium fertilizer as subplot. The variable observed was agr

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Elkosary, S., S. F. El-Sharabasy, A. M. Abdallatif, and M. M. Amin. "Enhancing yield and fruit quality of date palm (Phoenix dactyllifera L., cv. Zaghloul) using nitrogen and potassium nano-fertilizer." Journal of Applied Horticulture 24, no. 03 (2023): 306–12. http://dx.doi.org/10.37855/jah.2022.v24i03.54.

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The present investigation was carried out during two successive seasons of 2018 / 2019 and 2019/ 2020 on 15 years old date palm trees of Zaghloul cv. grown in sandy soil in a private orchard at El-Behira governorate, Egypt. The research was aimed to investigate the effect of nitrogen and potassium nano-fertilizers comparing with conventional mineral fertilizers on yield and fruit quality, four doses of nitrogen and potassium nano-fertilizer (75, 150, 300 and 600g/ palm/ year) were applied compared to the conventional nitrogen and potassium mineral fertilizers as a control. Different fertilizat

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Hric, Peter, Ján Jančovič, Peter Kovár, and Ľuboš Vozár. "The Effect of Varying Speed Release of Nutrients from Fertilizers on Growth-production Process of Turf." Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis 64, no. 2 (2016): 441–47. http://dx.doi.org/10.11118/actaun201664020441.

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The aim of this experiment was to compare the influence of fertilizers with different speed of nutrients release on growth–production indicators of turf under non–irrigated conditions. The experiment was carried in warm and dry conditions in area Nitra (Slovak Republic). In the experiment were followed 5 treatments (1. without fertilization, 2. Nitre with dolomite, Superphosphate, Potassium salt, 3. Turf fertilizer Travcerit®, 4. Slow release fertilizer SRF NPK 14–5–14 (+ 4CaO + 4MgO + 7S), 5. Controlled release fertilizer Duslocote® NPK (S) 13–9–18 (+6S)). The highest gain of height reached v

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Lakudzala, Deliwe Dinah. "Potassium Response in some Malawi Soils." International Letters of Chemistry, Physics and Astronomy 13 (September 2013): 175–81. http://dx.doi.org/10.18052/www.scipress.com/ilcpa.13.175.

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Potassium (K) response curves were generated for some Malawi soils using four different rates of potassium fertilizer, with grass being used to estimate plant availability. The study was conducted to find the point of maximum response for potassium. The soils were characterized, limed and fertilized with equal amounts of nitrogen. Potassium was applied at four rates: 0.0, 0.1, 0.2 and 0.4 me K/100 cm3 soil. The K treated soils were put in pots and cropped with grass. The grass was harvested six weeks after planting, dried and weighed. In general, addition of potassium resulted in increased gro

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Lakudzala, Deliwe Dinah. "Potassium Response in some Malawi Soils." International Letters of Chemistry, Physics and Astronomy 13 (May 3, 2013): 175–81. http://dx.doi.org/10.56431/p-i012df.

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Potassium (K) response curves were generated for some Malawi soils using four different rates of potassium fertilizer, with grass being used to estimate plant availability. The study was conducted to find the point of maximum response for potassium. The soils were characterized, limed and fertilized with equal amounts of nitrogen. Potassium was applied at four rates: 0.0, 0.1, 0.2 and 0.4 me K/100 cm3 soil. The K treated soils were put in pots and cropped with grass. The grass was harvested six weeks after planting, dried and weighed. In general, addition of potassium resulted in increased gro

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Chen, Meijuan, Liyun Zhao, Yu Huang, et al. "Review on K-Feldspar Mineral Processing for Extracting Metallic Potassium as a Fertilizer Resource." Minerals 14, no. 2 (2024): 168. http://dx.doi.org/10.3390/min14020168.

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The K-feldspar mineral is an insoluble potassium resource with a high potassium content and the most extensive and abundant reserves. To address the insufficient supply of soluble potassium fertilizers in China, the application of appropriate processing methods to extract potassium from K-feldspar and transform it into a soluble potassium fertilizer is of great significance. To date, various techniques have been developed to extract potassium from K-feldspar and produce a soluble potassium fertilizer. This review summarizes the main methods, i.e., the hydrothermal, high-temperature pyrolysis,

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Yinghai, Li, and Tian Juncang. "Quality of Reclaimed Domestic Water Irrigated Peppers-NPK Couple Model Based on Optimized Combination Technique." Mobile Information Systems 2022 (July 11, 2022): 1–9. http://dx.doi.org/10.1155/2022/8414975.

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China has been utilizing wastewater to irrigate grain, cotton, and vegetable crops, as well as landscapes, for decades. Nowadays, about 1/3 of the reclaimed water is used for irrigation purposes in China. This study focuses on the coupling between the nitrogen (N), phosphorus (P), and potassium (K) content in the reclaimed domestic water irrigated peppers and capsaicin. A field experiment in the three-factor, five-level quadratic general revolving combination design was conducted for an in-depth analysis of the capsaicin content coupling model by testing the significance of the regression equa

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Steiner, Fabio, Maria Do Carmo Lana, Tiago Zoz, and Jucenei Fernando Frandoloso. "Changes in potassium pools in Paraná soils under successive cropping and potassium fertilization." Semina: Ciências Agrárias 36, no. 6Supl2 (2015): 4083. http://dx.doi.org/10.5433/1679-0359.2015v36n6sup2p4083.

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The changes in soil potassium pools under intense cropping and fertilized with potash fertilizer are still little known to the soils of Paraná State. The effects of potassium fertilization and successive cropping on changes in K pools in different soils of Paraná, Brazil, were investigated in this study. Twelve soil samples, collected from the upper layer 0–0.20 m, were fertilized or not with K and subjected to six successive cropping (i.e., soybean, pearl millet, wheat, common beans, soybean and maize). All the crops were grown for 45 days, and at the end of the second, fourth and sixth cropp

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Steiner, Fabio, Maria do Carmo Lana, Tiago Zoz, and Jucenei Fernando Frandoloso. "Changes in potassium pools in Paraná soils under successive cropping and potassium fertilization." Semina: Ciências Agrárias 36, no. 6Supl2 (2015): 4083. http://dx.doi.org/10.5433/1679-0359.2015v36n6supl2p4083.

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The changes in soil potassium pools under intense cropping and fertilized with potash fertilizer are still little known to the soils of Paraná State. The effects of potassium fertilization and successive cropping on changes in K pools in different soils of Paraná, Brazil, were investigated in this study. Twelve soil samples, collected from the upper layer 0–0.20 m, were fertilized or not with K and subjected to six successive cropping (i.e., soybean, pearl millet, wheat, common beans, soybean and maize). All the crops were grown for 45 days, and at the end of the second, fourth and sixth cropp

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Wyszkowski, Mirosław, and Marzena S. Brodowska. "Potassium and Nitrogen Fertilization vs. Trace Element Content of Maize (Zea mays L.)." Agriculture 11, no. 2 (2021): 96. http://dx.doi.org/10.3390/agriculture11020096.

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This research was conducted to study the impact of potassium and nitrogen fertilizers on the trace element content of maize (Zea mays L.). Higher doses of potassium fertilizer led to a linear increase in cadmium, lead, nickel, zinc, and manganese content, and to lower Fe:Zn and Fe:Mn ratios. Moreover, cobalt level increased in maize upon the lower doses and decreased upon the higher doses of potassium. The impact of potassium fertilizer on the levels of other elements (iron and chromium) in maize was determined by the fertilizer dose and, in particular, by the supply of additional nitrogen. Po

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Chertkova, N. G., T. I. Firsova, Yu G. Skvortsova, G. A. Filenko, and R. O. Ryabov. "The use of complex fertilizers in seed production of winter wheat varieties." Grain Economy of Russia 1, no. 2 (2021): 52–57. http://dx.doi.org/10.31367/2079-8725-2021-74-2-52-57.

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The current paper has presented the results of the estimation of productivity of the winter wheat varieties ‘Krasa Dona’, ‘Polina’ and ‘Yubiley Dona’ when using liquid complex fertilizers ‘Strada N + Mono Sulfur (S)’, ‘Strada P + Mono Sulfur (S)’ and ‘Diform Silicon-potassium’. The treatment of winter wheat plants was carried out in the form of foliar top-dressings in the stages of tillering and stem extension. The study was carried out on the basis of the FSBSI “Agri- cultural Research Center “Donskoy” in 2019-2020. The trials were laid in the crop rotation of the laboratory for primary seed

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Hagagg, Laila F., M. F. M. Shahin, Esraa M. M. Farahat, Eman, S. Elhady, and Liudmila O. Sushkova. "Impact of feldspar and liquid Bio-fertilizer on fruit quantity and quality of olive trees Picual cv." BIO Web of Conferences 82 (2024): 02012. http://dx.doi.org/10.1051/bioconf/20248202012.

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The present investigation was carried out in two consecutive seasons (2022 and 2023) on eight-year-old olive trees “Picual” cv., planted at 4×6m apart around (420 trees / Fed). Trees irrigated with drip irrigation system, at a private orchard. The experiment included 3 rates of Feldspar as source of naturel potassium at 2, 4, and 6 kg/ tree and potassium dissolving bacteria as liquid Bio-fertilizers supplemented (25 ml) at two or three times to investigate the yield and fruit quality of Picual olive trees. Data indicated that the yield of Picual olive trees fertilized with feldspar and liquid

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YADAV, R. L. "FACTOR PRODUCTIVITY TRENDS IN A RICE–WHEAT CROPPING SYSTEM UNDER LONG-TERM USE OF CHEMICAL FERTILIZERS." Experimental Agriculture 34, no. 1 (1998): 1–18. http://dx.doi.org/10.1017/s0014479798001070.

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A long-term fertilizer experiment was conducted on the rice–wheat cropping system at four locations in India. Trends in partial factor productivity of applied nitrogen, benefit : cost ratio of fertilizer application, grain yield, changes in soil organic carbon, and available nitrogen (N), phosphorus (P) and potassium (K) were studied in control (N0P0K0), N (N120P0K0), NP (N120P80K0), NK (N120P0K40) and NPK (N120P80K40) fertilizer treatments. On average at all locations, continuous rice–wheat cropping for 16 years decreased the yield of rice by 57% in unfertilized plots and by 32% in plots rece

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Suntoro, G. Herdiansyah, H. Widijanto, A. D. Tjahjanto, C. Puspitasari, and H. R. Wardhana. "Effect of green manure on the availability of Phosphorus and Potassium nutrients in Vertisols." IOP Conference Series: Earth and Environmental Science 1362, no. 1 (2024): 012045. http://dx.doi.org/10.1088/1755-1315/1362/1/012045.

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Abstract The need for rice as a staple food continues to increase, increasing the demand for land. However, the soil’s availability of nutrients is decreasing due to inappropriate and excessive use of chemical fertilizers, causing soil degradation. Green fertilizer is an effective effort to reduce excessive use of chemical fertilizers. The research aims to determine the use of green manure in influencing the availability of phosphorus and potassium nutrients. The research was conducted on Vertisols in Weru District, Sukoharjo Regency. The research was carried out using experimental methods. Th

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Muliati, Lia, Rima Maelani, and Salwa Nur Khopipah. "Determination of Optimal Fermentation Time in the Production of Liquid Organic Fertilizer from Tempe Liquid Waste with the Addition of Banana Peels." Sainteks: Jurnal Sain dan Teknik 7, no. 01 (2025): 193–202. https://doi.org/10.37577/sainteks.v7i01.877.

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The tempeh industry uses soybeans as the main raw material to produce the main product, namely tempeh. Based on observations of the local industry, tempeh production waste in the South Margahayu area is very high, because more than one factory produces tempeh waste. Utilization of waste materials as organic fertilizer is one way to overcome environmental pollution problems. Banana peels contain many substances and are beneficial for plants if processed into liquid organic fertilizer, because banana peels contain 42% potassium so that they can strengthen plant stems, fight diseases, and fertili

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Shehata, Ibrahim E., Mostafa M. A. Hammam, and Mahfouz M. M. Abd-Elgawad. "Effects of Inorganic Fertilizers on Virulence of the Entomopathogenic Nematode Steinernema glaseri and Peanut Germination under Field Conditions." Agronomy 11, no. 5 (2021): 945. http://dx.doi.org/10.3390/agronomy11050945.

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The use of entomopathogenic nematodes as safe biopesticidal alternatives to hazardous chemicals entails improving the prediction of their native efficacy against soil pests. The effect of ten inorganic fertilizers, used extensively in Egypt, on the virulence of indigenous Steinernema glaseri and peanut germination was examined herein. The nematode added either before or tank-mixed with 1%, 5%, and 10% concentrations of each fertilizer in a peanut field was sampled 1 and 7 days before and 1, 7, 14, 21, 28, 49, and 56 post-tank mixes to check for S. glaseri virulence via baiting soil with Galler

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Sun, Jialin, Jianhao Wu, Alyaa Nasr, et al. "Metabonomics Analysis Reveals the Influence Mechanism of Three Potassium Levels on the Growth, Metabolism and Accumulation of Medicinal Components of Bupleurum scorzonerifolium Willd. (Apiaceae)." Biology 14, no. 5 (2025): 452. https://doi.org/10.3390/biology14050452.

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Bupleurum scorzonerifolium Willd. is a commonly used bulk Chinese herbal remedy. Due to the large-scale mining of wild Bupleurum scorzonerifolium Willd., its natural resources are gradually exhausted. In addition, there are some problems in Bupleurum scorzonerifolium Willd. cultivation, such as lack of guidance, excessive application of fertilizers and so on, which lead to the yield and quality of Bupleurum to be below the standard value. Therefore, it is significant to clarify the regulation of quality and yield under different levels of fertilizers. In this study, three different levels of p

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