Journal articles: 'Cassava – Fertilizers'

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Ballot, Christiant Simplice Armand, Silla Semballa, Wouyo Atakpama, Tatiana Maryse Yangakola, Arnaud Doubro Bo-Mbi, Didier Blavet, Innocent Zinga, Kpérkouma Wala, Kolman Batawila, and Koffi Akpagana. "Effet De Fumures Minérales Sur Le Rendement Et La Qualité Organoleptique Du Manioc (Manihot Esculenta Crantz) Dans La Zone De Savane Au Centre-Sud De Centrafrique." European Scientific Journal, ESJ 12, no. 6 (February 29, 2016): 185. http://dx.doi.org/10.19044/esj.2016.v12n6p185.

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Aims - The farming intensification in Sub-Saharan Africa induced soil fertility and crop yields depletion such as cassava, a main food and an important source of income of farmers in Central Africa Republic. To transcend the soil fertility depletion and improve cassava yield, LaSBAD has initiate a study focused on the mineral fertilizers of cassava crops. Methods - Four types of fertilizer were tested: the urea (Co(NH2)2), the potassium sulfate (K2SO4), the potassium chloride (KCl) and the triple superphosphate (TSP). The methodology consisted in the physical and chemical analysis of soil, the cultivation, the application of mineral fertilizers and the harvest of cassava after 12 months. Additionally, the evaluation of the organoleptic propriety of raw tubers and cassava balls after the use of fertlizers were achieved throughout semi-strucrured interviews. Results - The contribution of nitrogen and phosphorus has increased very significantly cassava yield from 18.70 to 40.20 t/ha respectively for the control treatment (T0) and the best treatment obtained (T10). A significant interaction was observed between nitrogen (N) and potassium (K) inputs on yields. The increasing doses of potassium as potassium chloride (KCl) had reduced cassava plant growth and yield. According to respondents, the organoleptic proprieties of cassava were remain quite unchangeable by mineral fertilizers. Conclusion - The application of mineral fertilizer improved cassava yield and did not affected the organoleptic quality of the raw tubers and cassava ball. Nevertheless, further studies are needed to prevent soil degradation, namely the potential use of termite nest as natural fertilizers and legumes in association or rotation with other crops.

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Dantas, Mara Suyane Marques, Mario Monteiro Rolim, Anamaria de Sousa Duarte, Luiz Evandro de Lima, and Manassés Mesquita da Silva. "Production and morphological components of sunflower on soil fertilized with cassava wastewater." Revista Ceres 64, no. 1 (February 2017): 77–82. http://dx.doi.org/10.1590/0034-737x201764010011.

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ABSTRACT Agroindustrial residues, such as cassava wastewater, have been used as soil fertilizers, reducing environmental pollution and recovering nutrients. The objective of this work was to evaluate production and morphological components and oil yield of sunflower (Helianthus annuus), hybrid Helio-250, fertilized with cassava wastewater. The experiment was conducted at the Experimental Station of the Instituto Agronomico de Pernambuco, Vitória de Santo Antão, State of Pernambuco, Brazil. A randomized block experimental design was used, with six cassava wastewater rates (0, 8.5, 17.0, 34.0, 68.0 and 136 m3 ha-1) and four replications. The variables evaluated were shoot fresh and dry weight, capitulum fresh and dry weight, capitulum diameter, seed yield, oil yield and seed oil content. The use cassava wastewater as soil fertilizer improved the production and morphological variables evaluated, except the seed oil content, which decreased with application of cassava wastewater rates above 25 m3 ha-1.

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León, Orietta, Diana Soto, Jesús González, Carlos Piña, Alexandra Muñoz-Bonilla, and Marta Fernandez-García. "Environmentally Friendly Fertilizers Based on Starch Superabsorbents." Materials 12, no. 21 (October 25, 2019): 3493. http://dx.doi.org/10.3390/ma12213493.

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Superabsorbents starches (SASs) were synthesized and characterized starting from native corn starch, bitter cassava and sweet cassava by graft copolymerization with itaconic acid. Additionally, their swelling behavior was studied both in water and in buffer solutions with different pHs and saline solutions. Their applicability was tested as environmentally friendly fertilizers in the absorption and release of urea, potassium nitrate and ammonium nitrate at different concentrations of fertilizers. The values of swelling at the equilibrium (H∞) in water and different media of the graft copolymers demonstrated their superabsorbent capacity, polyelectrolyte behavior, and smart response to environmental stimuli. The percentage of fertilizer absorbed and released from the SASs was a function of the initial concentration of the fertilizer in the medium. The loading and release of SASs were depended on the initial concentration of the fertilizer in the medium as well as the nature, structure, and morphology of the starch used.

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Yuanita. "Sifat Fisik dan Kimia Pupuk dari Limbah Kulit Ubi Kayu (Manihot utillissima) dengan Aktivator Tricholant." Buletin Loupe 16, no. 01 (August 14, 2020): 14–20. http://dx.doi.org/10.51967/buletinloupe.v16i01.72.

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Waste or rubbish is the result of disposal from a production process both small and large scale. Because of the smell and its negative impact on health, it has become a big problem in society. One problem is cassava waste. With a lot of unused cassava waste, especially fried food selling areas around the city of Samarinda. A good solution is to make fertilizer from sewage. The purpose of this study was to observe the physical properties of fertilizers (color, odor, shape and temperature) and chemical properties or to analyze the nutrient content of fertilizer from cassava peel using a tricholant activator and chicken manure. Based on the physical properties of cassava peel fertilizer (Manihot utillissima) with a tricholant activator decompose on day 9, with a stable temperature of 27OC, the structure of black crumbs, odorless, and crumbs. The resulting fertilizer is ripe and ready to use. The resulting fertilizer is ripe and ready to use. The results of chemical fertilizer analysis in the first treatment (cassava waste with tricholant activator) had N content of 1.20% N, P 0.801%, K 0.302%, C / N ratio 17.35, BO 27.17% and pH 6.8 and fertilizer with the second treatment (mixing cassava waste with a mixture of tricholant activator and chicken manure) has nutrient content N 0.81%, P 0.134%, K 0.235%, C / N ratio 19.2, BO 30.75% and pH 7 in accordance with SNI 19-7030 -2004 fertilizer quality standards

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Katuromunda, Sylvester, Benson Ekwaro, and Boniface Wanaku. "Yield Performance of Newly Developed Cassava Varieties in Response to Inorganic Fertilizers." Modern Applied Science 15, no. 4 (July 22, 2021): 60. http://dx.doi.org/10.5539/mas.v15n4p60.

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A study was conducted at Kyambogo University Farm in randomized complete block design with three replications to assess the effect of NPK (17:17:17) fertilizer on the growth and tuber yields of two newly developed cassava (Manihot esculenta Crantz) varieties, NAROCASS 1 and NASE 14. Cassava varieties were assigned to the main plots, while fertilizer rates (zero/control, 200, 400, 600 kg/ha) were sub-plots. Fertilizer was applied in two splits, at planting and four months after planting. Fertilizer application significantly (P<0.05) increased the cassava stem heights to first branching and at harvest, and the number of stems per plant when compared with the control treatments. Mean stem heights to first branching and at harvest of plants that received NPK were higher than those of the respective control treatments by 62.8 and 70.5% for NAROCASS 1, and 57.0 and 76.5% for NASE 14, respectively. Fertilizer rate of 400 kg/ha significantly increased the lengths, numbers of tubers and tuber yields per plant when compared with the control treatments. Mean lengths, numbers of tubers and tuber yields of plants that received NPK were higher than those of respective control treatments by 48.2, 36.9 and 68.3% for NAROCASS 1, and 39.9, 50.5 and 67.6% for NASE 14, respectively. Therefore, to achieve optimum tuber yields of newly developed cassava varieties, farmers should integrate NPK fertilizer application into already existing management practices, particularly the use of high quality planting materials and integrated pest, disease and weed management. However, government ministries concerned should ensure that inorganic fertilizers are readily accessible and affordable to farmers.

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Võ, Giàu Văn, and Nam Thành Nguyễn. "Industrial - agricultural symbiosis model for cassava starch production factory in Tay Ninh province." Science & Technology Development Journal - Science of The Earth & Environment 5, no. 1 (April 18, 2021): 284–97. http://dx.doi.org/10.32508/stdjsee.v5i1.553.

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This study aims to propose an industrial-agricultural symbiosis model that applies the closed sloop eco-technical solutions for cassava starch production towards sustainable development. This study applies the AHP method to analyze nine alternatives and determines the best one based on 17 specific criteria for the typical cassava starch production plant in Tay Ninh province. The chosen model has 12 losed sloop solutions and can save about 40% groundwater, hundreds of cubic metre of water for irrigation in agriculture (to meet hundreds of hectares of crops), limit the lack of water in the dry season and water regulation from the Dau Tieng lake and reduce from 19-73% emissions from traffic,... Wastewater after Biogas is diluted in proportion for cassava is 28l wastewater/49l of clean water and the rubber tree is 8,5l of wastewater/7l of clean water and sugar-apple is 20l wastewater/20l of clean water wasto spray as a natural leaf fertilizer, limiting the use of NPK chemical fertilizers. Some indicators of wastewater after treatment show that it is suitable for use as fertilizer but suitable for nutrient development in the soil and increase nitrogen for plant development, reducing the cost of using stimulating fertilizers. In addition, production wastewater with high cyanide levels is also considered to dilute according to certain proportions as natural insecticidal drugs. These results show that industrial-agricultural symbiosis model bring great enviromental benifits for cassava starch industry and can be replicated in the future.

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Konan, Kouakou Marius, Sifolo Seydou Coulibaly, Kouadio Ignace Kouassi, Bi Irié Arsène Zoro, and Dénezon Odette Dogbo. "Coupling Compost from Chicken Manure and Inorganic Fertilizer to Improve Cassava (Manihot esculenta Crantz) Growth and Yield on a Ferralitic Soil in Côte d’Ivoire." Turkish Journal of Agriculture - Food Science and Technology 8, no. 7 (July 31, 2020): 1472–78. http://dx.doi.org/10.24925/turjaf.v8i7.1472-1478.3307.

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This study aimed to evaluate the effect of compost from chicken manure, NPK fertilizer and the mixture of both fertilizers on agronomic parameters of four varieties of cassava (Yacé, Bonoua, Six mois and Alleda agba) in Côte d’Ivoire. The field experiment was carried out under a randomized complete block design with three replicates on a ferralitic soil during two season-cycles. The results showed that the different fertilizers stimulated plants growth and tuberous roots production. The highest number of stems (3) and leaves (66) was obtained with the mixture of NPK and compost applied on the variety “Bonoua”. All varieties that received the compost mixed with NPK produced more leaves with a dominance of the Bonoua variety (65.57). The highest number of tuberous roots (5.58), the heaviest weight per root (6.13 kg) and the highest yield (61.37 t/ha) were obtained while using the mixture of compost and NPK as fertilizer and “Bonoua” as variety. Thus, mixing compost from chicken manure and NPK can be recommended to improve cassava productivity in Côte d'Ivoire on a ferralitic soil.

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Witular, Annisa, JM Sri Hardiatmi, and Kharis Triyono. "kajian macam dan dosis pupuk organik terhadap pertumbuhan ketela pohon." Innofarm:Jurnal Inovasi Pertanian 22, no. 1 (April 19, 2020): 46. http://dx.doi.org/10.33061/innofarm.v22i1.3525.

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Study the Types and Dosage of Organic Fertilizers of Cassava (Manihot esculenta Crantz). The research to observe the development of cassava due to the influence of cassava based on organic fertilizer. This research was conducted from October 2019 to January 2020, in the Experimental Garden of the Faculty of Agriculture, Slamet Riyadi University, Surakarta. This study used a Completely Randomized Design (CRD) method with 1 treatment, namely type and dose of organic fertilizers and obtained 10 combinations treatments and each was repeated 3 times. From the research data, analysis of variance will be carried out nd then the real difference test will be countinued with the real Honestly Significant Difference test at the 5% level. In this observation observed included 8 parameters: shoot height, longest root length, number of roots, number of leaves,fresh weight of planted roots, dry weight of planted roots, fresh weight of planting buds, and dry weight of planting buds. The results showed that (1) effect of kinds and dosages of organic fertilizer the effect very apparent in the parameters of the number of planted leaves, number of planted roots, longest root length, dry weight of planted roots, fresh weight of planted shoots and dry weight of planted shoots. Significantly affected the shoot height parameters. No significant effect is found on the parameters of the fresh root weight of the crop. (2) The dosage of 1.9 kg / polybag (MD7) fertilizer application gave the best results on the dry weight of shoots, 378 grams.

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Dantas, Mara S. M., Mario M. Rolim, Elvira M. R. Pedrosa, Egídio Bezerra Neto, Gerônimo F. da Silva, and Ênio F. de F. e. Silva. "Accumulation of macronutrients in different parts of sunflower fertilized with cassava wastewater." Revista Brasileira de Engenharia Agrícola e Ambiental 20, no. 7 (July 2016): 630–36. http://dx.doi.org/10.1590/1807-1929/agriambi.v20n7p630-636.

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ABSTRACT The utilization of organic wastes in agriculture is an alternative that can reduce the amounts of mineral fertilizers applied to the soil. The aim of this study was to evaluate the accumulation of macronutrients in sunflower cv. 'Hélio 250' fertilized with cassava wastewater. The experiment was conducted in randomized block design, with six treatments (0; 8.5; 17; 34; 68 and 136 m3 ha-1 of cassava wastewater) and four replications. The accumulation of nitrogen (N), phosphorus (P), potassium (K), calcium (Ca), magnesium (Mg) and sulfur (S) were evaluated in leaves, stem, capitulum and achenes. The cassava wastewater dose of 136 m3 ha-1 promoted the greatest accumulation of all evaluated nutrients. The pattern of macronutrients accumulation occurred in the following order: leaves - Ca > K > N > Mg > S > P; stem - K > Ca > Mg > N > P > S; capitulum - N > K > P > Mg > Ca > S; and achenes - N > P > K > Mg > S > Ca. The extraction of nutrients by whole sunflower plants occurred in the following order: N > K > Ca > Mg > P > S. Cassava wastewater provided appropriate concentrations of N, P, K, Ca, Mg and S; therefore, it has potential as an organic fertilizer for the studied sunflower cultivar.

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Pradhan, Surendra K., Josiane Nikiema, Olufunke O. Cofie, Helvi Heinonen-Tanski, and Pay Drechsel. "Fecal sludge-derived pellet fertilizer in maize cultivation." Journal of Water, Sanitation and Hygiene for Development 6, no. 3 (June 30, 2016): 474–81. http://dx.doi.org/10.2166/washdev.2016.160.

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Fecal sludge (FS) contains significant amounts of plant nutrients and organic matter although it also contains pathogens. Therefore, FS can be used as fertilizer after proper sanitization. This study was designed to test dried fecal sludge (DFS)-based pellet fertilizers on maize cultivation. The DFS fertilizers were produced by composting, co-composting with sawdust, or irradiated by gamma-irradiation, and then nitrogen-enriched and pelletized using gelatinized or gamma-irradiated cassava starch. These DFS pellet fertilizers were compared to each other and to no-fertilization, mineral fertilizer, and agro-industrial waste compost. The fertilizer applications were 150 or 210 kgN/ha. Maize was cultivated in pots containing Cambisol and Ferric Lixisol growth media. The EC-SDFS-PG pellet (DFS + sawdust co-composted, enriched with nitrogen and pelletized) at a rate of 210 kgN/ha produced the highest maize yield (4.4 ton/ha) among all other treatments, while mineral fertilizer produced 3.9 ton/ha. It is concluded that the EC-SDFS-PG pellet produces similar or higher maize yields than mineral fertilizer and more than the agro-industrial compost in both growth media types.

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Dantas, Mara Suyane Marques, Mário Monteiro Rolim, Anamaria de Sousa Duarte, Ênio Farias de França de Silva, Elvira Maria Regis Pedrosa, and Daniel da Costa Dantas. "Chemical Attributes of Soil Fertilized with Cassava Mill Wastewater and Cultivated with Sunflower." Scientific World Journal 2014 (2014): 1–10. http://dx.doi.org/10.1155/2014/279312.

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The use of waste arising from agroindustrial activities, such as cassava wastewater, has been steadily implemented in order to reduce environmental pollution and nutrient utilization. The aim of this study is that the changes in chemical properties of dystrophic red-yellow latosol (oxisol) were evaluated at different sampling times after reuse of cassava wastewater as an alternative to mineral fertilizer in the cultivation of sunflower, hybrid Helio 250. The experiment was conducted at the Experimental Station of the Agricultural Research Company of Pernambuco (IPA), located in Vitória de Santo Antão. The experimental design was randomized blocks with6×5subplots; six doses of cassava wastewater (0; 8.5; 17.0; 34.0; 68.0; and 136 m3 ha−1); and five sampling times (21, 42, 63, 84, and 105 days after applying the cassava wastewater), with four replications. Concentrations of available phosphorus and exchangeable potassium, calcium, magnesium and sodium, pH, and electrical conductivity of the soil saturation extract were evaluated. Results indicate that cassava wastewater is an efficient provider of nutrients to the soil and thus to the plants, making it an alternative to mineral fertilizers.

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Gbigbi, Theophilus Miebi, and V. A. A. Chuks-Okonta. "Profitability and Resource Use Efficiency in Cassava Production: Evidence from Delta State, Nigeria." International Journal of Research and Review 8, no. 6 (June 29, 2021): 199–207. http://dx.doi.org/10.52403/ijrr.20210624.

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Cassava has played and continues to play an outstanding role. The country's failure to meet current demand has been due to the efficiency of farmers' use of resources. The study examined resource use efficiency in cassava production. Data from 120 cassava producers were carefully chosen using random sampling procedure. Descriptive statistics and multiple regression model were applied to analyze the data. The results disclosed that the greater part of the growers were female with mean age of 45 years, educated and married. The mean household size was 6 persons with mean farming experience of 16 years. Majority of the producers belong to farming association. The result of cost and returns shows that the total production cost , total revenue realized and profit were N221,500, N398,000 and N176,500 respectively with BCR of 1.80 which implies that cassava production is profitable. The regression estimated showed that farm sizes, fertilizers, labour and planting material influence the output produced. The estimated output elasticity was 0.934, which means decreasing return to scale. The result indicated that farm size, fertilizers, labour and planting materials were inefficiently used, thereby dropping below the best economic level. The low ratios of MVP / MFC of the entire variables were shown to be less than unitary. Approximately 56.19%, 99.98%, 97.67%, 99.99% and 11.28% increase in MVP are necessary to optimize the allocation of farm size, fertilizer, labour, planting material and agrochemical. Major problems include inaccessibility to financial services, high labour cost, poor market prices and insufficient extension services. Agricultural policies should be aimed at supplying agricultural inputs, such as fertilizer and effective extension programs to guarantee the productive usage of resources. It is also suggested that extension facilities be intensified to provide farmers with information on new innovations and methods of farming while steps should be taken to lessen the militating effect of the constraints. Keywords: Resource Use Efficiency, Cassava Production, Benefit-Cost Analysis, Farmers.

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Shanti, Ratna, and Ratna Nirmala. "Aplikasi Pupuk NPK Dan Bokashi Serta Interaksinya Terhadap Pertumbuhan Dan Produksi Tiga Varietas Ubi Kayu (Manihot escculenta. L) Di Kutai Timur." Agrifarm : Jurnal Ilmu Pertanian 6, no. 1 (September 2, 2017): 1. http://dx.doi.org/10.24903/ajip.v6i1.1.

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The purpose of this study to determine the effect of fertilization on the production of three varieties of cassava that is Darul Hidayah, Gajah and Varietas Local. The field experiment was conducted for 9 months starting from April to December 2016. Locations trial in Sangata Selatan, DistrictKutai Timur.The design is split plot design arranged in a factorial treatment was repeated 3 times (R) Treatment Varieties (V) as the main plots and fertilizer treatments (P) as subplot. The results showed that the inorganik fertilizer (NPK), organik (Bokashi) and combinations thereof capable of producing tubers each, 124 tons per hectares, 130.44 tons per hectares, and 134.67 tons per hectares and 99.11 ton per hectares as a kontrol s. Fertilization treatment of three varieties cassava tubers can increase production 20%. 23.8% and 26% respectively as a compared with kontrol s. While the tuber production between varieties Darul Hidayah and Gajah 148.50 tons perhectares and 132, 33 ton per hectares while the local variety 85.33 tons per hectares. The increase in the tubers from 3 varieties namely 42.5% and 35.6% compared to local varieties. Keywords: anorganik and organik fertilizers, varieties of cassava

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Wilson, Hugh, and Althea Ovid. "Influence of fertilizers on cassava production under rainfed conditions." Journal of Plant Nutrition 17, no. 7 (June 1994): 1127–35. http://dx.doi.org/10.1080/01904169409364793.

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Jala, Inácio Mucutai, Caeline Castor da Silva, Juraci Souza Sampaio Filho, Eder Jorge Oliveira, and Rafaela Simão Abrahão Nóbrega. "Seedlings of cassava varieties are responsive to organic fertilization." Semina: Ciências Agrárias 40, no. 5Supl1 (August 7, 2019): 2151. http://dx.doi.org/10.5433/1679-0359.2019v40n5supl1p2151.

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In Brazil, there is already a recommendation for the production of cassava seed-cuttings for the production of seedlings originated from micropropagation, which may be extended for the production of seedlings obtained from cuttings from healthy plant stems, in order to avoid the spread of diseases. Therefore, it is essential to establish adequate cultivation substrates of easy acquisition which may stimulate the growth of seedlings, both to reduce the nursery period, as well as the seedling’s production costs. The objective of this work was to evaluate the effect of organic fertilizers made from bovine and goat manures, and tree pruning residues, to produce seedlings of three cassava varieties. The plots were set in a completely randomized design, with six replicates. The treatments consisted of three cassava genotypes (BRS Formosa, BRS Tapioqueira and BRS Kiriris) and five proportions of organic fertilizer: soil (0: 100, 20:80, 40:60, 60:40 and 80:20). The evaluations were performed 30 and 45 days after planting (DAP). There were isolated effects for shoot dry mass, total dry mass, leaf area and number of leaves. Interactions were verified for root length, chlorophyll a and total chlorophyll index, root dry mass and shoot dry mas/root dry mass ratio 45 DAP. The organic fertilizer stimulated the initial growth of cassava seedlings in the three varieties studied in the proportion of 50% of organic fertilizer and 50% of Latosol. Varieties BRS Formosa and BRS Kiriris showed the highest Dickson Quality Scores. Genotypes reacted efficiently to organic fertilization and can be propagated on these easily acquisition cultivation substrates.

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Bolly, Yovita Yasintha. "PENINGKATAN KETERSEDIAAN DAN SERAPAN NPK SERTA HASIL TANAMAN JAGUNG BISI-16 MELALUI INOKULASI MIKORIZA DAN PUPUK NPK PADA ALFISOL." AGRICA 5, no. 1 (July 22, 2020): 44–56. http://dx.doi.org/10.37478/agr.v5i1.445.

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This study is to investigate the influence of mycorrhiza isolates with different origin rhizosphere and fertilizer NPK with different dosage to the availability and absorption of NPK as well as the corn yield and to determine the optimum dosage of fertilizer NPK in each mycorrhiza isolate with different origin rhizosphere and availability and uptake of NPK and corn yields and to determine the optimum dosage of fertilizer NPK for each different origin rhizosphere of isolates mycorrhizal inoculated against corn yield. This study used complete Randomized Block Design (CRBD) consisting of 20 treatment combinations with three replications, they are without mycorrhiza and without fertilizer (m0p0) without mycorrhiza + 25% dose of NPK (m0p1) without mycorrhiza + 50% dose of NPK (m0p2) without mycorrhiza + 75% dose of NPK (m1p3) without mycorrhiza + 100% dose of NPK (m1p4), origin rhizosphere mycorrhiza of the of corn plants + 100% dose of NPK (m2p2) without fertilizer (m1p0) mycorrhiza origin of the rhizosphere of corn plants+ 25% dose of NPK (m1p1) mycorrhiza origin rhizosphere of plants corn + 50% dose of NPK (m1p2) origin rhizosphereof mycorrhiza the corn plants+ 75% dose of NPK (m1p3), mycorrhiza origin of the rhizosphere of corn plants+ 100% dose of NPK (m1p4), origin rhizosphere of mycorrhiza the cassava + without fertilizers ( m2p0), origin of mycorrhiza of the cassava + 25% dose of NPK (m2p1), origin rhizosphere of mycorrhiza of cassava + 50% dose of NPK (m2p2), origin rhizosphere of mycorrhiza of cassava + 75% dose of NPK (m2p3), origin rhizosphere of mycorrhiza of cassava + 100% dose of NPK (m2p4) mycorrhizal from serpong + without fertilizer (m3p0), mycorrhiza from serpong + 25% dose of NPK (m3p1), mycorrhiza from serpong + 50% dose of NPK (m3p2), mycorrhiza from serpong + 75% dose of NPK (m3p3), mycorrhiza from serpong + 100% dose of NPK (m3p4). The results showed that mycorrhiza treatment and dosage of fertilizer NPK can increase the availability of NPK, NPK uptake, dry weight of plant and dry weight of seed. Regression test showed the optimum dosage of NPK on m0 treatment cannot be determined because it is linear, while the optimum dosage of NPK fertilizer on the treatment of inoculated mycorrhizal of origin rhizosphere of corn (m1) is 50.66% the recommended dose, in the treatment of native mycorrhiza rhizosphere of cassava (m2 ) is 45.11%, and the treatment of mycorrhiza from serpong (m3) is 46.10%.

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Araújo, Narcísio Cabral de, Vera Lucia Antunes Lima, Jailton Garcia Ramos, Elysson Marcks Gonçalves Andrade, Geovani Soares de Lima, and Suenildo Jósemo Costa Oliveira. "Contents of macronutrients and growth of ‘BRS Marataoã’ cowpea fertigated with yellow water and cassava wastewater." Ambiente e Agua - An Interdisciplinary Journal of Applied Science 14, no. 3 (April 26, 2019): 1. http://dx.doi.org/10.4136/ambi-agua.2309.

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Agricultural utilization of yellow waters associated with cassava wastewater is a sustainable technique, since it allows reduction of costs related to acquisition of industrialized fertilizers and minimizes the environmental pollution caused by the inadequate disposal of these effluents. In this context, this study evaluated the macronutrient macronutrient content and growth of cowpea fertigated with yellow water associated with cassava wastewater and NPK as source of nutrients. The experiment was set up in a greenhouse located at Campus I of the Federal University of Campina Grande. The experimental design was completely randomized, composed of five treatments characterized by: fertigation with mineral fertilizers, in the form of NPK; organic fertigation composed of human urine, cassava wastewater, human urine plus cassava wastewater; and organo-mineral fertigation composed of urine, cassava wastewater and mineral phosphorus, with four replicates. At 36 days after sowing, the following parameters were determined: contents of nitrogen, phosphorus, potassium, sulfur and the variables number of leaves, plant height, stem diameter, leaf area, shoot fresh matter and shoot dry matter. The use of yellow waters promotes significant increases for growth and production variables for nitrogen and potassium contents mainly, as well as for growth and production variables. The contents of nitrogen, phosphorus and potassium were higher than the levels considered as adequate for the cowpea crop. The use of human urine and cassava wastewater have potential to meet the needs for the main macronutrients required by cowpea and the irrigation via fertigation with these biofertilizers positively influences the development of cowpea.

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Simongini, Lucas, Wesley Ribeiro Rivadavea, Julliane Destro de Lima, Willian Gonçales Penasso, Jefferson Alan Teixeira, Daisy Leticia Ramirez Monzon, Pedro Henrique Riboldi Monteiro, and Glacy Jaqueline Da Silva. "Productivity Evaluation of Cassava (Manihot esculenta Crantz) Cultivated with Different Fertilizers." Journal of Agricultural Studies 9, no. 3 (August 12, 2021): 326. http://dx.doi.org/10.5296/jas.v9i3.18870.

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Cassava is one of the most important socio-economic crops in the world. It is usually cultivated in soils with low fertility and little mechanization, which makes it difficult to increase the crop's productivity and, consequently, economic gains. The aim of this study was to evaluate different types of fertilization (Poultry litter, organomineral fertilizer and rooting) in cassava cultivation in the northwest region of the state of Paraná - Brazil. After 10 months of planting, the variables evaluated were: number of roots, root diameter, root length, shoot height, starch yield and shoot fresh weight. The results were submitted to mean test, principal component analysis and Pearson's R correlation analysis. The results showed that poultry litter presented the best result in practically all the evaluated variables, followed by rooting, which promoted the highest number of roots; in addition, with the exception of the number of roots, all other variables were highly correlated.

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SA, Ojobor, Egbuchua CN, and Adeoye GO. "Effects of rice husk and cassava mill effluent compost on upland rice cultivation in Delta State, Nigeria." Journal of Agricultural and Crop Research 8, no. 9 (September 17, 2020): 200–209. http://dx.doi.org/10.33495/jacr_v8i9.20.170.

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Low rice yields in Nigeria are attributed to poor soil fertility. Inorganic fertilizers used to improve soil fertility are expensive and not readily available. This work aimed at evaluating the nutrient potential of rice husk and cassava effluent compost for production of rice in Abraka, Delta State, Nigeria. Four formulations were made with rice husk (RH) and cow dung in ratio 7:3 by weight using water and cassava effluent [RH with water (RH), RH + cow dung with water (RHCd), RH with cassava effluent (RHC), RH + cow dung with cassava effluent (RHCdC)] and were applied at 2.5, 5 and 10 t/ha with control. Rice seeds were sown for two years in a randomized complete block design. Residual effects were monitored in the third year. Plant height (PH), leaf area (LA), dry matter (DM) and rice grain yield (GY) were measured as well as soil samples were taken for post-cropping analysis. Data were analyzed with ANOVA at α0.05. The results revealed that treatment RHCd at 10 t/ha had highest PH and LA while RHCdC at 10 t/ha produced the highest DM and GY in both years and in residual study. Treatment RHCdC at 10 t/ha had the highest soil pH value, organic carbon and RHCd at 10 t/ha had the highest total nitrogen at harvest in second year. Both treatments increased soil nutrients at harvest than other treatments and improved soil fertility. Keywords: Soil amendment, cow dung, organic fertilizer, rice yield, Abraka.

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Nguyen, Hung, J. J. Schoenau, K. C. J. Van Rees, Dang Nguyen, and P. Qian. "Long-term nitrogen, phosphorus and potassium fertilization of cassava influences soil chemical properties in North Vietnam." Canadian Journal of Soil Science 81, no. 4 (August 1, 2001): 481–88. http://dx.doi.org/10.4141/s00-048.

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The long-term effects of yearly fertilizer applications on soil chemical properties and nutrient availability are not well documented for cassava (Manihot esculenta) production in Vietnam. In 1990, research plots were established (randomized complete block design) with 12 treatments to test effects of different rates of N, P and K on soil properties in Acrisols (FAO-UNESCO Soil Classification) at Thai Nguyen University, North Vietnam. In June 1998, composite soil samples (0- to 10-cm and 10- to 20-cm depth) were collected from each plot. Nine years of N application significantly reduced the labile pools of soil inorganic P, total soil P and soil extractable K and Mg. Total soil N was only slightly increased in the 10- to 30-cm depth. Long-term applications of P significantly increased soil inorganic P fractions, but reduced concentrations and supply rates of nitrate and K. Moreover, 9 yr of K application significantly increased soil organic C (two depths), soil total N (10-30 cm) and soil extractable K in the 0- to 10-cm depth. Generally, the results show that long-term applications of mineral fertilizers in a ratio of N:P2O5:K2O of 2:1:2 (at the rates of 80 N:40 P2O5:80 K2O or 160 N:80 P2O5:160 K2O) are effective in maintaining the total content and availability of applied nutrients, but when applied alone are associated with decreases in other nutrients. Key words: Nitrogen, phosphorus, potassium fertilizers, cassava, ion exchange resin, soil properties

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Himmah, Nur Izza Faiqotul, Gunawan Djajakirana, and Darmawan Darmawan. "Nutrient Release Performance of Starch Coated NPK Fertilizers and Their Effects on Corn Growth." SAINS TANAH - Journal of Soil Science and Agroclimatology 15, no. 2 (December 18, 2018): 104. http://dx.doi.org/10.15608/stjssa.v15i2.19694.

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One way to control or slow down the nutrient release rate from fertilizer is by coating technique. Nowadays the use of biodegradable coating materials for slow-release fertilizer (SRF) is preferable because of environmental issues. This research was aimed to make SRF using starches and cellulose as the coating materials and to test the release rate of the nutrients. Five kinds of starches (cassava, corn, sago, wheat, and glutinous rice) and carboxymethyl cellulose (CMC) were used as coating material for granulated NPK fertilizer. The coated fertilizers (NPK SRF) were tested for their leaching rate in the soil by percolation experiment. The results showed that the kind of starch used influenced the release rate of the NPK SRFs. The NPK SRF coated with sago starch exhibited slow release rate and low leached nutrients which also resulted in slow growth of corn plant, as expected of SRF. The use of starch and CMC as biodegradable coating materials in this research has a possibility to affect the microbial activity in the soil so that the nutrient release became faster than the uncoated NPK fertilizer.

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Deng, Xiao, Chun Yuan Wu, Yi Li, Jing Kun Liu, and Qin Fen Li. "Effect of 3 Kinds of Organic Fertilizers on the Concentrations of Dissolved Organic Carbon in Clay Soil under Flooded Conditions." Advanced Materials Research 1092-1093 (March 2015): 1225–28. http://dx.doi.org/10.4028/www.scientific.net/amr.1092-1093.1225.

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Using pot experiment to study the effect of three organic fertilizers of chicken manure compost (CM), activated sludge (AS) and cassava residue compost (CR) on the concentrations of dissolved organic carbon (DOC) in clay soil under flooded conditions. The results showed that the regular patterns of the concentrations of DOC are basically the same in clay soils on applying three kinds of organic fertilizers and no applying fertilizers under flooded conditions. They were all showed as a “down-up-down” trend. The three kinds of organic fertilizers could effectively increase the concentrations of DOC in clay soils. And the concentrations of DOC gradually increased with increasing of the added proportion of organic fertilizers in clay soils, which respectively increased 1.34% ~ 52.64%, 4.58% ~ 149.98% and 2.64% ~ 72.45% in the treatments on 1%~3% addition amount of CM, AS and CR. It indicated that the improving effect of three kinds of organic fertilizers on the concentrations of DOC showed as AS>CR>CM in clay soils under flooded conditions.

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Byju, G., M. Nedunchezhiyan, James George, S. Sunitha, Sabitha Soman, and A. C. Hridya. "Evaluation of fertilizer best management practices by SSNM and customized fertilizers for cassava (Manihot esculenta) cultivation in India." Current Horticulture 8, no. 1 (2020): 56. http://dx.doi.org/10.5958/2455-7560.2020.00011.4.

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Dinata, Anak Agung Ngurah Badung Sarmuda, Anastasia Sischa Jati Utami, and I. Wayan Sudarma. "Growth and productivity of cassava given organic fertilizer and potential waste as a source of animal feed." E3S Web of Conferences 306 (2021): 01054. http://dx.doi.org/10.1051/e3sconf/202130601054.

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The research was conducted to determine the growth and productivity of cassava plants that are given organic fertilizers and their potential waste as ruminant animal feed. The research was conducted at Kerthi Winangun Farmers Group, Bukti village, Kubutambahan District, Buleleng Regency. The experiment was arranged in a completely randomized design with three fertilization treatments and twelve replications. The fertilizer given were: cow dung 5 kg/plant (UK1), compost 5 kg/plant (UK2) and cow dung 5 kg/plant + bio urine 300 ml/plant (UK3). The Parameters observed were (1) plant growth (height, Number of leaves and tubers), (2) tuber production, (3) waste (leaf and peel) production and (4) carrying capacity. The result shows that application of 5 kg compost/plant yielded the highest tuber, leaf and peel production was respectively 1789,25±475,50, 667 ± 104 and 416,61±18 g/plant. Production of this peel can be used to feed 1.29-1.52 cattle/ha/year or 10.73-12,68 goat/ha/year. In conclusion, the cassava that was given with 5 kg compost per plant has the highest production to be used as a source of feed for ruminants.

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Aweto, A. O., O. Obe, and O. O. Ayanniyi. "Effects of shifting and continuous cultivation of cassava (Manihot esculenta) intercropped with maize (Zea mays) on a forest alfisol in south-western Nigeria." Journal of Agricultural Science 118, no. 2 (April 1992): 195–98. http://dx.doi.org/10.1017/s0021859600068787.

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SUMMARYSoils in farmlands near Ibadan, Nigeria, where shifting or continuous cultivation of cassava intercropped with maize is practised, were sampled in February 1990 and their characteristics compared with those of similar, uncultivated, forest soil. Organic matter, total nitrogen, exchangeable calcium, magnesium, potassium and sodium, cation exchange capacity and pH were lower in the cultivated soils. Continuous cultivation exerted a greater effect on soil organic matter, total nitrogen and available phosphorus status then did shifting cultivation. It is suggested that inorganic and organic fertilizers and mulch should be applied to cultivated soil to conserve the soil nutrients. Fallows of 3–6 years following 1–3 years of cropping appeared incapable alone of adequately restoring soil fertility. They should, therefore, be supplemented with fertilizer applications.

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Chirinda, Ngonidzashe, Catalina Trujillo, Sandra Loaiza, Sandra Salazar, Jorge Luna, Liz Alexandra Tong Encinas, Luis Augusto Becerra López Lavalle, and Thierry Tran. "Nitrous oxide emissions from cassava fields amended with organic and inorganic fertilizers." Soil Use and Management 37, no. 2 (January 19, 2021): 257–63. http://dx.doi.org/10.1111/sum.12696.

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SANTOS, JULIANA FERNANDES DOS, CARLA DA SILVA SOUSA, ANA CRISTINA FERMINO SOARES, FRANCISCO DE SOUSA LIMA, and DIMMY HERLLEN SILVEIRA GOMES BARBOSA. "ACTINOBACTERIA AND ORGANIC FERTILIZERS FOR MANAGEMENT OF THE NEMATODE Scutellonema bradys IN YAM PLANTS." Revista Caatinga 29, no. 3 (September 2016): 548–58. http://dx.doi.org/10.1590/1983-21252016v29n304rc.

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ABSTRACT This study aimed to evaluate the in vitro nematicidal effect of metabolites produced by actinobacteria strains, aqueous extracts from fresh and dry biomass of leguminous plants (sunn hemp, pigeon pea and Gliricidia sepium), liquid residue from sisal (Agave sisalana Perrine ex Engelm) and cassava (Manihot esculenta) to control Scutellonema bradys. Strains of actinobacteria and leguminous plants (sunn hemp, pigeon pea and gliricidia) were evaluated against S. bradys in yam plants. Strains AC-92, AC-12, AC-50 and AC-52 showed nematicidal effect against S. bradys under in vitro conditions. The aqueous extracts from the fresh biomass of sunn hemp, gliricidia and pigeon pea are more efficient than the aqueous extracts of the dry biomass of these plants for control of S. bradys under in vitro conditions. The liquid residues from sisal and cassava, in concentrations above 20 %, also have nematicidal effect against S. bradys under in vitro conditions. The green manures (sunn hemp, pigeon pea and gliricídia) and actinobacteria strains, singly or in combination, are effective for the management of S. bradys in yam crop.

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Sungthongwises, K., Anucha Laoken, and Anan Polthanee. "Effect of Fertilizer Application on Growth and Yield of Manihot esculenta Crantz." Journal of Agricultural Science 12, no. 8 (July 15, 2020): 152. http://dx.doi.org/10.5539/jas.v12n8p152.

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To investigate the effect of chemical and organic fertilizer management on growth, yield and nutrient uptake of two cassava cultivars under rainfed conditions, the study was laid out in factorial in randomised complete block design with four replications. The six treatments were TR1) Kasetsart 50 with 312.50 kg ha-1 of 15-15-15, TR2) CMR 33-38-48 with 312.50 kg ha-1 of 15-15-15, TR3) Kasetsart 50 with 312.50 kg ha-1 of 15-7-18, TR4) CMR 33-38-48 with 312.50 kg ha-1 of 15-7-18, TR5) Kasetsart 50 with 6,250 kg ha-1 of organic fertilizer and TR6) CMR 33-38-48 with 6,250 kg ha-1 of organic fertilizer. The results illustrated that Kasetsart 50 responded to chemical fertilizer management especially, 312.50 kg ha-1 of 15-7-18 formula and 6,250 kg ha-1 of organic fertilizer at 1 and 4 months after planting respectively, better than CMR 33-38-48 in terms of storage root fresh and dry weights, percentage of total starch and amylose content. CMR 33-38-48 responds to chemical fertilizer management and organic fertilizers in terms of stem and leaf growth.

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Nassy, Marielle Laurentine Moita, Stefan Hauser, Maria Egwekhide, Komlan Batawila, Peter Kulakow, and Michael Abberton. "Leaf and roots yields responses of three improved cassava (Manihot esculenta Crantz) varieties to organo-mineral fertilizers and leaf harvest in the South-West Nigeria." International Journal of Biological and Chemical Sciences 14, no. 4 (August 17, 2020): 1432–47. http://dx.doi.org/10.4314/ijbcs.v14i4.21.

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L’étude a été menée dans l’objectif d’évaluer la production de trois variétés améliorées de manioc en réponse à la récolte des feuilles et aux fertilisants NPK, compost et Compost-NPK. L’essai a été fait selon le dispositif en split-split plot, à blocs aléatoires complets à trois facteurs et trois réplications. Les récoltes ont été réalisées à 3 mois et 5 mois après la plantation. La récolte finale a été faite à 12 Mois Après la Plantation (MAP). Le résultat montre qu’une différence non significative (p>0,05) a été observée entre les variétés et entre les traitements fertilisants du rendement en feuilles sèches total. La moyenne totale du rendement en feuilles sèches s'élève à 1454,19 kg/ha au niveau du contrôle. Et ce rendement augmente en moyenne de 10,42% en présence du compost, 39,91% quand le mélange Compost-NPK a été appliqué et de 34, 19% en présence de NPK. Le rendement racinaire varie significativement (p˂0,05) en fonction des variétés et traitement de récolte des feuilles. La perte moyenne de rendement sec due à la récolte des feuilles est de 3,86 t/ha soit 45,77%. La perte du rendement racinaire sec a été compensée en moyenne de 35,59% soit 1,64 t/ha par le mélange Compost-NPK, et 24,05% soit 1,11 t/ha quand le NPK a été appliquée. Parmi les variétés, deux répondent aux fertilisants et sont capables de compenser les pertes. L’IITA-TMS-IBA071393 serait un bon candidat pour les petits exploitants dépourvus de moyen d’intrant.Mots clés : Génotypes de manioc, cueillette des feuilles, engrais organo-minéral, rendement, effet compensatoire. English Title: Leaf and roots yields responses of three improved cassava (Manihot esculenta Crantz) varieties to organo-mineral fertilizers and leaf harvest in the South-West NigeriaThis study was carried out to investigate the leaf and root yield response to leaf harvest and the application of NPK fertilizer, compost and the combination of NPK plus compost of three improved cassava varieties. The experiment was a complete randomised split-split plot design with three factors and three replications. Leaf harvest was at 3 months and 5 months after planting (MAP). The final root harvest was at 12 MAP. The leaf dry matter yield was not significantly (p> 0.05) different between varieties and fertilizer treatments. The average leaf yield was 1454.19 kg/ha DM in control. Leaf yield increased by 10.42% when compost was applied, by 39.91% when compost plus NPK was applied and by 34.19% when only NPK was applied. Root yield was significantly (p˂0.05) affected by cassava variety and leaf harvest. Average root DM yield losses were 3.86 t/ha (45.77%) when leaves were harvested. Root DM yield loss was compensated to 35.59% (1.64 t/ha) when compost plus NPK fertilizer was applied and 24.05% (1.11 t/ha) when NPK was applied. Two varieties responded positively to fertilisers and were able to compensate for root yield losses. IITA-TMS-IBA071393 appears a suitable candidate for cassava farmers with small income because it did not require inputs. Keywords: Cassava genotypes, leaves harvesting, organo-mineral input, yield, compensation effect.

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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 (November 3, 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 within two factors and replied for three times. The first factor is coconut liquid fertilizer with 4 levels; SK1 (50 ml/pot), SK2 (100 ml/pot), SK3 (150 ml/pot) and SK4 (200 ml/pot). The second factor is banana liquid fertilizer with 4 levels; BP1 (25ml/pot), BP2 (50ml/pot), BP3 (75ml/pot) and BP4 (100ml/pot), so there are 27 total of treatment units. The results showed that coconut liquid fertilizer significantly affected plant height, number of leaves, dry matter weight, dry root weight, matter weight, root weight, organic carbon, cation exchanged capacity, percentage Potassium of maize, and gained the highest average of Pottassium increasing in soil. Nevertheless, it has not significant effect to soil pH.

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Zuraida, Nani. "Karakterisasi Beberapa Sifat Kualitatif dan Kuantitatif Plasma Nutfah Ubi Kayu (Manihot esculenta Crantz.)." Buletin Plasma Nutfah 16, no. 1 (October 6, 2016): 49. http://dx.doi.org/10.21082/blpn.v16n1.2010.p49-56.

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Utilization of cassava plant genetics resources could be done when the agronomical and morphological characters are available. Qualitative and quantitative of plant characters have been studied during April-December 2006 at Cikeumeuh Experimental Station, Bogor. A total of 225 accessions cassava germplasm were planted in 2 m x 3 m plot size with 100 cm x 60 cm plant spacing. The plants were fertilized by 60 kg N, 20 kg P2O5, and 90 kg K2O per ha. One third N and K fertilizers, and all of P were applied at planting time, while two third N and K were applied at 3 months after planting. The result showed that coefficient variation of qualitative and quantitative characters data of cassava accessions collected showed high variation. Therefore the accessions are going to be maintained and conserved for genetic resources. The plant height, number of tuber, green matter weight, and harvest index were positive correlation with tuber weight. While stem diameter and character of leaf lobe did not correlate with tuber weight. Among qualitative characters (the colors of young leaf, leaf vein, leaf stalk length, leaf lobe, stem, tuber, and number of leaf lobe) did not show difference on tuber weight.

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H. Hasan, ShimaaKh. "Response of Cassava Crop Cultivated In Sandy Soil To Different Sources of Potassium Fertilizers." Annals of Agricultural Science, Moshtohor 58, no. 3 (September 1, 2020): 633–40. http://dx.doi.org/10.21608/assjm.2020.127288.

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Linn, Kay Zar, and Phyu Phyu Myint. "Study on the Effectiveness of Natural Organic Fertilizers on Cassava (Manihot esculenta Crantz.) Cultivation." Asian Journal of Soil Science and Plant Nutrition 3, no. 3 (August 27, 2018): 1–10. http://dx.doi.org/10.9734/ajsspn/2018/42912.

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Sieverding, E., and S. T. Toro. "Effect of mixing VAM inoculum with fertilizers on cassava nutrition and VAM fungal association." Agriculture, Ecosystems & Environment 29, no. 1-4 (February 1990): 397–401. http://dx.doi.org/10.1016/0167-8809(90)90305-w.

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Ansah, K. O., C. Antwi, E. L. K. Osafo, S. Enning, and H. Adu-Dapaah. "Manure characteristics of small ruminants fed agro by-products in the guinea savannah agro-ecological zone of Ghana." Ghana Journal of Agricultural Science 54, no. 1 (July 31, 2019): 67–76. http://dx.doi.org/10.4314/gjas.v54i1.7.

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A 90 day study on evaluating quantity and quality of manure from small ruminants in the Guinea Savannah agro-ecological zone of Ghana was conducted. 36 goats and 36 sheep were randomly allotted to three dietary treatments - Basal diets of maize stover, cassava and yam peels as Treatment one (T1), T1 supplemented with cowpea residues as Treatment two (T2) and T1 supplemented with groundnut residues as Treatment three (T3) in a randomized complete block design. Feed composition and intake and manure characteristics were assessed and data analyzed statistically using Generalized Linear Model procedures of SAS at 5% significance level. The Chemical composition of feed resources ranged from 3.2-17.3% crude protein, 82-97.2% organic matter and 2.8-18% ash. Total feed intake ranged from 519.55-659.72 g/day and 331.84-420.17 g/day for sheep and goats respectively. Sheep manure weighed 319.17-423.33 g/day and contained 20.74-29.01% carbon, 1.87-2.32% nitrogen, 0.77-3.00 potassium, 9.52-26.50% ash, 0.44-0.77 pH and C:N ratio of 10.98-15.53. Goat manure weighed 178.67-216.17 g/day with 19.58-30.61%, 1.56-2.21% nitrogen, 0.82-2.33% potassium, 10.75-19.80% ash, 0.37-1.47 pH and C:N ratio of 9.49-19.92. Results indicated that manure from small ruminants could serve as alternative source of fertilizer in Ghana since its characteristics compare well with chemical fertilizers. Keywords: sheep; goats; feed resources; manure; fertilizers

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Gazola, Diego, Claudemir Zucareli, Rudiney Ringenberg, José Perez da Graça, and Clara Beatriz Hoffmann-Campo. "Nitrogen fertilization in the contents of secondary compounds in cassava cultivars." Semina: Ciências Agrárias 39, no. 3 (May 4, 2018): 1015. http://dx.doi.org/10.5433/1679-0359.2018v39n3p1015.

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The production of chemical substances is a strategy of plants to defend against the attack of pest insects. The synthesis of secondary compounds in plants is influenced by genotype and cultural management, such as the use of nitrogen fertilizers. Thus, the objective of this work is to evaluate the effect of doses of nitrogen fertilizer over time on the production of secondary compounds in two industrial cassava cultivars. The experiment was carried out in a greenhouse (25 ± 5 °C) of Embrapa Soybean in Londrina, Paraná, with the cultivation of potted plants (4l) in a 2 × 4 × 3 factorial scheme, with five replications. Two genotypes of industrial cassava (‘Baianinha’ and ‘Caiuá’) and four different nitrogen doses (0, 30, 60, and 90 kg ha-1) were used, with sampling at 15, 30, and 45 d after fertilization. Nitrogen fertilization was performed 50 d after sprouting. In the apical leaves, the levels of rutin, caffeic, p-coumaric and ferulic acids were evaluated in a high performance liquid chromatograph (HPLC). Exploratory analyses were performed on the data variables to verify the assumptions for analysis of variance (ANOVA), such as the independence and normality of errors, homogeneity of treatment variances and non-additivity of the model (they were submitted to analysis of homogeneity and normality, respectively. After these tests, ANOVA and Tukey’s test (p ? 0.05) were performed. For the quantitative data concerning the N rates, regression study analyzes were performed. The Caiuá cultivar was found to have a higher ferulic acid content. The caffeic acid content decreased over time after the application of N in both cultivars. The rutin content in both cultivars did not increase with an increase in nitrogen dose. At a dose of 90 kg ha-1, both cultivars presented a lower p-coumaric acid content after 30 d.

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Szekut, Flavio D., Carlos A. V. de Azevedo, Marcio A. V. Boas, and Thiago Zuculotto. "Hydraulic performance of drippers with different waters and lateral line slopes." Revista Brasileira de Engenharia Agrícola e Ambiental 22, no. 12 (December 2018): 813–18. http://dx.doi.org/10.1590/1807-1929/agriambi.v22n12p813-818.

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ABSTRACT The operation of drip lateral lines is affected by the topography of the irrigated area and represent, depending on the type of water applied, changes in the discharge characteristics of the emitters. The research had as objective to evaluate the hydraulic performance of built-in labyrinth drippers, non-pressure compensating, with different waters and slopes of the lateral lines. The experiment was carried out on a test bench and consisted of a randomized block design with split-plots: first factor with four types of water, representing the plots: clean water, water with fertilizers, cassava starch wastewater and poultry slaughterhouse wastewater; second factor with slopes of the lateral line, constituting the sub-plots: upslope, level and downslope. The experimental statistics consisted of analysis of variance with subsequent simple-effect analysis and Tukey test at 0.05 probability level to compare the means of dripper flow rates. Quality control statistics was performed using Shewhart’s control charts with interpretations based on upper and lower control limits, as well as non-random pattern recognition. Waters of inferior quality modified the flow rates of the tested drippers regardless of the variation of internal pressure caused by the slope of the lateral line. Water with fertilizer (300 mg L-1) obtained the best conditions of temporal irrigation quality verified by the control charts. Irrigation with poultry slaughterhouse wastewater obtained the same flow rates in all slopes. Cassava starch wastewater caused the lowest flow rates among all the waters.

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Suanda, I. Wayan. "PENGARUH PUPUK TRICHODERMA SP. DENGAN MEDIA TUMBUH BERBEDA TERHADAP PERTUMBUHAN VEGETATIF TANAMAN CABAI MERAH BESAR (Capsicum Frutescens L.)." JURNAL WIDYA BIOLOGI 10, no. 01 (January 7, 2019): 1–12. http://dx.doi.org/10.32795/widyabiologi.v10i01.228.

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This research aimed to find out the effects of Trichoderma sp. fertilizers with different growing media on the vegetative growth of chili plants and to find out the best growing media to make it grow optimally.This research was conducted in the Biologi Laboratory at FPMIPA IKIP PGRI Bali from April to June, 2018. The research was done in several growing media; treatmen P0 (without the Trichoderma sp. fertilizer), P1 (Trichoderma sp. fertilizer from taro media), P2 (Trichoderma sp. fertilizer from cassava media), P3 (Trichoderma sp. fertilizer from sweet potato media), P4 (Trichoderma sp. fertilizer from corn media), P5 (Trichoderma sp. fertilizer from potato media). These treatments were repeated four times each. The population in this study were all chili pepper seeds of F1 Megatop variety with a total of 100 plants and a sample of 72 plant that were three weeks old. Each group contained of three chili plants. The data collected in this study were about the height and number of leaves on the chili plants. The data were analyzed using the analysis o variance (ANOVA) with F test and a 5% significance level followed by the LSD test.Based on the analysis, there are several effects of Trichoderma sp. fertilizer with different growing media on the vegetative growth of chili plants. The results showed that treatment P4 (Trichoderma sp. fertilizer from corn media) have the most effective and optimal effects on the chili plants.

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Hulugalle, N. R., R. Lal, and M. Gichuru. "Effect of Five Years of No-tillage and Mulch on Soil Properties and Tuber Yield of Cassava on an Acid Ultisol in South-eastern Nigeria." Experimental Agriculture 26, no. 2 (April 1990): 235–40. http://dx.doi.org/10.1017/s001447970001824x.

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SUMMARYThe effect of no-tillage and mulch on soil properties and tuber yield of cassava was studied over a five year period on an infertile, acid Ultisol in south-eastern Nigeria. Mulch was applied at a rate of 12 t ha−1as a split application once at planting and once six months after planting. No chemical fertilizers were used during the trial. Bulk density and proportion of micropores (pore radius, r, <1.4 µm) were greater, and proportion of macropores (r>14.4 µm) lower, with no-tillage. Water infiltration was increased by mulching, being greatest in tilled, mulched plots. Soil chemical properties were not significantly affected by tillage system, although levels of exchangeable calcium, magnesium and potassium were higher and acid saturation lower with mulching. Soil physical and chemical properties were best with tillage and mulching, and poorest when neither tillage nor mulch was used. Cassava tuber yield was unaffected by tillage system but increased by mulching.

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Zhao, Fu Chun, Ai Bin Wu, Li Yue Zhang, Chao Qun Niu, Xiao Hui Wang, Kai Mei Chen, and Shuang Quan Liao. "Preparation of Slow-Released Films Based on the Natural Rubber Latex Modified by Cassava Starch." Materials Science Forum 848 (March 2016): 152–59. http://dx.doi.org/10.4028/www.scientific.net/msf.848.152.

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Nitrogen fertilizer is an important nutrition for the crops. However, the majority of common nitrogen fertilizers have not been absorbed by the plant, which causes great economical loss and environment pollution. In order to solve the above problem, the biodegradable slow-release coating materials for urea was prepared by introducing the active free radical of short chain cassava starch into concentrated natural rubber latex. The effects of the amount of starch, modifier dosage on the water absorption kinetics of natural rubber latex slow-released film, and the mechanical properties, slow-released performance, thermal stability and mildew characteristics in the tropical climate conditions was also examined. The results showed that the swelling rate of natural latex composite film increased with the increment of starch content. However, the water modifier imposed a different effect on the initial swelling rate and the equilibrium-swelling ratio of latex composite film. The preliminary swelling was slow but the time for achieving a basic balance state of the swelling was short. In addition, the thermal degradation process of the natural rubber latex slow-released composite film was divided into two stages. The maximum heat loss temperature of each stage shift toward the each other due to the increasing dosage of water modifier. The biodegradability of the composite film improved but the release rate of urea got faster when the starch content increased.

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Tonmanee, N., and H. Wada. "Water quality of a reservoir as affected by agriculture in the east of Thailand: a preliminary study." Water Science and Technology 44, no. 7 (October 1, 2001): 141–44. http://dx.doi.org/10.2166/wst.2001.0409.

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A preliminary study on the water quality of a reservoir, affected by agriculture, in the east of Thailand was conducted during 1996-1997. Monitoring water quality of a reservoir is important because the sloping lands surrounding the reservoirs are mainly utilized for cultivating cash crops (pineapple, cassava, etc). A lot of fertilizers and agrochemicals were applied to soil and crops which can polluted the water . The results from the preliminary studied will be applied for the monitoring of the water quality in other reservoirs in the 16 pilot areas.

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Mauricio, Roberio Silva Soares, Costa Araujo Neto Aderson, Reboucas Sao Jose Alcebiades, Dias Cardoso Adriana, Magalhaes Morais Otoniel, da Silva Lima Raelly, de Souza Moreira Eduardo, and Reis Prado Thiago. "Weed dry mass accumulation in response to the application of NPK fertilizers in cassava crop." African Journal of Agricultural Research 10, no. 36 (September 3, 2015): 3596–606. http://dx.doi.org/10.5897/ajar2015.9937.

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Santo, Kwadwo, and Joseph Sarkodie-Addo. "Bulking and Yield of Cassava (Manihot esculenta Crantz) Following Application of Organic and Inorganic Fertilizers." Journal of Experimental Agriculture International 15, no. 1 (January 10, 2017): 1–7. http://dx.doi.org/10.9734/jeai/2017/29013.

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Susan John, K., S. U. Shanida Beegum, M. N. Sheela, and G. Suja. "Nutrient efficient genotypes in cassava: scope to substitute for chemical fertilizers and in C sequestration." Acta Horticulturae, no. 1118 (May 2016): 193–200. http://dx.doi.org/10.17660/actahortic.2016.1118.29.

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Anarah, Samuel E., Caleb I. Ezeano, and Ogonna O. Osuafor. "Perceived Effects of Climate Variability on Cassava Production among Small Scale Farmers in Anambra State, Nigeria." Journal of Agricultural Studies 7, no. 2 (May 7, 2019): 27. http://dx.doi.org/10.5296/jas.v7i2.14758.

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Climate variability is one of the predominant themes in agricultural research. Climate variations can seriously affect agricultural production. It brings about changes in weather patterns which in turn give rise to imbalances in seasonal cycles, harm to ecosystems and water supply affecting agriculture and food production. Extreme weather events such as floods, landslides and drought are caused by climate variation. Studies have shown that root crops such as cassava are most vulnerable to the impact of climate variability. This paper therefore investigated the perceived effects of climate variability on cassava production among small scale farmers in Anambra State. Specifically, the study described the socioeconomic characteristics of small scale cassava farmers in the state; identified the activities of small scale cassava farmers that contribute to climate variability; and ascertained the perception and levels of awareness of climate variability by small scale cassava farmers in the study area. A multi-stage sampling technique was used in selecting the sample units for the study. The instrument for data collection was a well-structured questionnaire based on the objectives. Descriptive statistics was used to actualize the objectives while the hypothesis was tested using multiple linear regression model. The result of the socioeconomic variables showed that majority of the small-scale cassava farmers were within the age range of 41-50 years; majority (59.38 %) of the respondents were females; majority (32.03%) have 7 to 11 years of farming experience; majority of the respondents (35.94 %) have farm size of 0.1 to 0.5 hectares; majority of the farmers (42.19 %) belong to 3 to 4 farming organizations; majority of the farmers (42.19 %) make income of ₦50,000 to ₦100,000; and majority of the farmers (53.13 %) produce yield of 3000 to 4000 kg of cassava. Result of the activities of small scale cassava farmers that contribute to climate variability show that majority of the farmers (88.28 %) perceived that bush burning contribute to climate variability while (82.03%), (60.16%), (56.25%) and (50.78%) indicated that intensive agricultural land use, use of inorganic fertilizers, use of fossil fuels and deforestation contribute also to climate variability, respectively. Based on the perception and level of awareness of climate variability by small scale cassava farmers in the study area, the result show that the farmers were significantly aware of the following climate variability; early onset of rainfall and early cessation; decreased rainfall days; shorter than normal rainfall; absence of frost; low intensity rainfall; flash flooding; unusual patterns of precipitation and high sunshine intensity. It was also found that significant relationship exists between socio-economic characteristics and production level by the small scale cassava farmers. Recommendations were made based on the findings.

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NOLTE, C., T. TIKI-MANGA, S. BADJEL-BADJEL, J. GOCKOWSKI, and S. HAUSER. "GROUNDNUT, MAIZE AND CASSAVA YIELDS IN MIXED-FOOD CROP FIELDS AFTER CALLIANDRA TREE FALLOW IN SOUTHERN CAMEROON." Experimental Agriculture 41, no. 1 (January 2005): 21–37. http://dx.doi.org/10.1017/s0014479704002145.

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Shortened fallow periods lead to a decline in crop yields in traditional mixed-food crop fields in southern Cameroon. Farmers use no inputs such as fertilizers for crop production in these field types. Planted fallows with adapted tree species might sustain or increase crop production under those conditions, as found in other parts of Africa. Two-year-old calliandra tree fallows, with trees planted in alleys, clusters, equidistantly or around plot borders, were compared with two- and four to five-year-old natural fallows for their effect on groundnut, maize and cassava yields on eighteen farmer fields in southern Cameroon. Trial fields covered a wide range of soil and environmental conditions. The tree fallows had no significant effects on the yields of maize and cassava with the exception of the border planting, in which trees were not rigorously pruned back prior to cropping. Here, cassava tuber yields were reduced. Cassava tuber yields declined generally with decreasing planting distance to trees. The yield of groundnut, the most important crop in this field type, was adversely affected. However, maize grain yields were positively related to biomass produced by calliandra trees, notably on soils with pH over about 5.3. The data indicated that yields of all crops could be increased with higher plant densities, irrespective of fallow type. The tree fallows, with the exception of border planting, showed less adaptability than four to five-year-old natural fallows to sites with low crop yields, whereas no difference compared with two-year-old natural fallows was found.

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Sunarsih, Fitri, Yetty Hastiana, and Aseptianova Aseptianova. "Respon Pupuk Organik Ampas Tahu dengan Bioaktivator Terhadap Pertumbuhan Ipomoea reptans." Bioeksperimen: Jurnal Penelitian Biologi 4, no. 2 (September 25, 2018): 1–9. http://dx.doi.org/10.23917/bioeksperimen.v4i2.6879.

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Pupuk organik ampas tahu dengan bioaktivator mol tape singkong mengandung unsur makro yang berpotensi terhadap pertumbuhan kangkung darat (Ipomoea reptans). Penelitian ini bertujuan untuk mengetahui kandungan unsur makro pupuk organik ampas tahu dengan bioaktivator mol tape singkong pada konsentrasi yangr berbeda terhadap pertumbuhan kangkung darat (Ipomoea reptans). Penelitian di dilaksanakan di kebun biologi,uji hara pupuk organik dan tanah di laboratorium Baristand, metode Penelitian ini menggunakan rancangan acak kelompok (RAK) dengan 4 perlakuan dan 6 ulangan. Hasil penelitian ini menujukkan terdapat kandungan unsur makro pupuk organik ampas tahu pada Nitrogen terdapat 0,09 %, posfor (sbg P2O5) terdapat 0,62% dan Kalium (sbg K2O) 1,82 %. Dari hasil analisis sidik ragam terhadap tinggi tanam F-hitung perlakuan 2,769 lebih kecil dibanding F tabel 0,05 (3,29) dan F tabel 0,01 (5,42),jumlah daun F-hitung perlakuan 6,284 lebih besar dibanding F tabel 0,05 (3,29) dan F tabel 0,01 (5,42), lebar daun F-hitung perlakuan 17,40 lebih besar dibanding F tabel 0,05 (3,29) dan F tabel 0,01 (5,42), dan pada panjang daun F-hitung perlakuan 6,935 lebih besar dibanding F tabel 0,05 (3,29) dan F tabel 0,01 (5,42). Pemberian pupuk organik ampas tahu dengan bioaktivator sangat berpengaruh terhadap pertumbuhan kangkung darat (Ipomoea reptans) Growth is a process increase the size, shape or volume. kale (Ipomea reptans L.) is a plant that lived and can grow more than one year. characteristic of kale is elliptic, has spacious, containing water (herbaceous) and potholes. the purpose of this studyto determine the content of macro elements in organic fertilizers made from tofu and fermented cassava bio-activator mole on the growth of land kale (Ipomoea reptans, L). This study carried out on the garden in the UMP and test biological nutrientorganic fertilizers and performed in the Baristand’s laboratory. This research using randomized block design (RBD) with 4 treatments and 6 rans. the results of this study shows that it contains macro elements (CME) in soil and organic fertilizer pulpout with a bio-activator mol cassava with different concentrations, and test results significant difference (LSD) at treatment P0, P1, P2, and P3 showed highly significant the height, number of leaves, leaf width and length of the leaves on the plant kale land (Ipomoea reptans L).

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Pimentel, Marcelo Laranjeira, Iolanda Maria Soares Reis, Victor Sousa Portela, Maria Lita Padinha Correa Romano, Carlos Ivan Aguilar Vildoso, Eloi Gasparin, and Eliandra de Freitas Sia. "Effect of Different Sources of Fertilization on Chemical Properties of Soil Under Cassava Cultivation in Western Pará, Brazil." Journal of Agricultural Science 12, no. 9 (August 15, 2020): 106. http://dx.doi.org/10.5539/jas.v12n9p106.

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Nutrient management becomes essential in soils with low natural fertility, so the use of organic fertilizers can improve chemical properties of soil and reduce production costs. The objective of this study was to evaluate the effect of different fertilization sources on the chemical properties of soil under cassava cultivation. The experiment was conducted between 2017/2018 in the community of Boa Esperança, Santarém-PA using the cultivar Bem-te-vi, in the randomized block design with 4 treatments: T1 (without fertilization), T2 (fertilization NPK), T3 (organic fertilization with poultry manure), T4 (fertilization with cattle manure), with 5 replicates. The soil samples were analyzed for the contents K+, Ca²+, pH in H2O and KCl, Al³+ and soil organic carbon content (TOC). The data were submitted to analysis of variance and the means were compared by the Tukey test at 5% probability, using the software MINITAB© version 18. There were statistical differences between the treatments for all the chemical properties analyzed. The findings of the analysis were that fertilization with catle manure and NPK were the same and differed from the other treatments for the contents of K+, pH in H2O and KCl, for Ca²+ and TOC. The treatment without fertilization obtained the lowest values differing from the others, for Al³+. The source from NPK obtained the lowest content in the soil. The treatments with organic fertilizers had higher levels of the above nutrients in the soil. The chemical properties of the soil were altered from the different management systems for the cultivation of cassava.

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Isnatin, Umi, and Use Etica. "PENGEMBANGAN USAHA SAYURAN DAUN SINGKONG UNTUK PEMENUHAN KEBUTUHAN DAPUR UNIDA DAN RUMAH MAKAN PADANG BAGI UPT AGROTEKNOLOGI." Jurnal Terapan Abdimas 6, no. 2 (July 28, 2021): 211. http://dx.doi.org/10.25273/jta.v6i2.8372.

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Abstract. The Technical Implementation Unit of agrotechnology as an entrepreneurial development for the student of agrotechnology at the University of Darussalam Gontor has a problem at the managerial level. The management indicator referred to is cultivation management, finance, and marketing. Therefore, this research emphasizes the program on improving students' managerial abilities for 4 months. The purpose of this study is as a means of learning for students in cultivating cassava plants for entrepreneurship. One thing that must be improved is the cultivation of cassava leaves and how to market them. Furthermore, the availability of cassava leaves (Manihot utilisima) refers to the production of cassava plants, and up until this point, there is no special cultivation for cassava leaves. The method used in this research is the practice of cultivating cassava and holding training in making Bhokasi and POC fertilizers, training in making vegetable pesticides, training for post-harvest and product packaging. This service activity will help to succeed in improving student skills as well as practicing cassava cultivation and building marketing networks in the UNIDA Gontor's business units and Padang restaurant as one of the restaurants that use cassava leaves the most. Abstrak. UPT Agroteknologi sebagai lokasi pengembangan kewirausahaan mahasiswa prodi Agroteknologi Universitas Darussalam Gontor masih belum maksimal dalam pengelolaan. Indikator pengelolaan yang dimaksud adalah pengelolaan managemen budidaya, keuangan dan pemasaran. Pengabdian kami fokuskan pada program peningkatan kemampuan mahasiwa selama 4 bulan. Tujuan dari kegiatan ini sebagai sarana belajar mahasiswa dalam budidaya tanaman singkong yang akan diambil daunnya dan wirausaha. Salah satu yang akan kita tingkatkan adalah budidaya daun singkong dan cara pemasarannya. Daun singkong (Manihot utilisima), selama ini ketersediaannya mengacu kepada produksi tanaman singkong, dan belum ada budidaya khusus untuk sayur daun singkong. Adapun metode kegiatan yang kami lakukan adalah praktek budidaya tanaman singkong dan mengadakan pelatihan pembuatan pupuk Bhokasi dan POC, pelatihan pembuatan pestisida nabati, pelatihan pasca panen dan pengemasan produk. Kegiatan pengabdian ini berhasil peningkatkan kemampuan mahasiswa sekaligus praktek budidaya tanaman singkong dan membangun jaringan pemasaran di dapur UNIDA Gontor dan Rumah Makan Padang. . <div id="gtx-trans" style="position: absolute; left: 174px; top: 481px;"> </div>

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Neves, Andressa C., Camila N. Bergamini, Rafaela de O. Leonardo, Manoel P. Gonçalves, Dilcemara C. Zenatti, and Eliane Hermes. "Effect of biofertilizer obtained by anaerobic digestion of cassava effluent on the development of crambe plants." Revista Brasileira de Engenharia Agrícola e Ambiental 21, no. 10 (October 2017): 681–85. http://dx.doi.org/10.1590/1807-1929/agriambi.v21n10p681-685.

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ABSTRACT This study aimed to evaluate the effect of applying increasing doses of biofertilizer obtained by the anaerobic digestion of cassava effluent on the development of crambe plants. The experiment was conducted in a protected environment at the Federal University of Paraná (UFPR), Palotina Sector, between April and August 2015. A completely randomized design was used, and five different treatments with the following doses were applied in five replicates: 0, 40, 80, 120, and 160 kg ha-1 of K2O. The following parameters related to plant development were evaluated: final height, stem diameter, number of branches, dry shoot and root biomass, mass of the grains, and oil content. The 160 kg K2O ha-1 dose was found to have the best influence on the plant development, because all the measured parameters reached their highest values at this dose, except for oil content, which attained the highest percentage in the case of the control treatment (0 kg ha-1 of K2O). This study proved that the biofertilizer obtained by anaerobic digestion of cassava effluent can be used as an alternative to regular fertilizers in cultivating crambe.

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Journal articles on the topic 'Cassava – Fertilizers'

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