Resultados de búsqueda - "potassium"

Biomass production, nutrients and root characteristics of fallow species and the utilization of its biomass as a phosphorus source for the common bean (Phaseolus vulgaris L.) por Jorge Mustonen, Pedro S.

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Need for seed re-inoculation in Swedish soybean cropping sequences por Andersson, Emelie

“…However, application of nitrogen (as manure) and high amounts of phosphorus in soil appeared to promote B. japonicum survival. The amount of potassium in soil had varying effects, but high amounts appeared to impair B. japonicum survival. …”
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Optimised ammonia sanitation of sewage sludge por Häfner, Franziska

“…Sewage sludge is rich in plant nutrient like nitrogen, phosphorus, potassium and micronutrients. Concerning the depletion of phosphorus resources, the reuse of sewage sludge can contribute in reducing the production of artificial fertiliser and satisfy agricultural nitrogen and phosphorus demands. …”
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Efecto de la fertilización sobre la fotosíntesis, rendimiento y producción de materia seca en el cultivo de batata (Ipomoea batatas l) por Salcedo, Saula, Jarma Orozco, Alfredo, Rosero Alpala, Elvia Amparo, Narváez Quiroz, Lainer

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Production et valorisation des larves de mouche soldat noire, Hermetia illucens (Diptera : Stratiomydae) por Dzepe Togue, D.R.

“…Ces dernières étaient également fortement concentrées en calcium (35,55g/kg), potassium (13,03g/kg), phosphore (7,11g/kg) et en magnésium (4,49g/kg). …”
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Balanced nutrient requirements for maize in the northern Nigerian savanna: parameterization and validation of QUEFTS model por Shehu, B.M., Lawan, B.A., Jibrin, J.M., Kamara, A.Y., Mohammed, I.B., Rurinda, J., Zingore, S., Craufurd, Peter Q., Vanlauwe, Bernard, Adam, A.M., Merckx, Roel

“…The model QUEFTS (QUantitative Evaluation of Fertility of Tropical Soils) was used to estimate balanced nitrogen (N), phosphorus (P) and potassium (K) requirements for maize production in the Northern Nigerian Savanna. …”
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Topsoil Bacterial Community Changes and Nutrient Dynamics Under Cereal Based Climate-Smart Agri-Food Systems por Choudhary, Madhu, Jat, Hanuman Sahay, Datta, Ashim, Sharma, Parbodh Chander, Rajashekar, Balaji, Jat, Mangi Lal

“…Similarly, the available nitrogen, phosphorus, and potassium were improved by, respectively, 38, 70, and 59% in CSA scenarios compared to the CT scenario. …”
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Comparative effects of continuous cultivation of seven crop combinations on soil physicochemical properties in two soils of different land use history in eastern Nigeria por Asadu, C., Dixon, A.G.O.

“…The chemical properties significantly (p≤0.05) affected by crop combination were exchangeable calcium (Ca) and total exchangeable bases at the forest; organic matter, exchangeable potassium (K), total exchangeable acidity, and available phosphorus (P) at the UNN site. …”
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Evolution of soil fertility research and development in Ethiopia: From reconnaissance to data-mining approaches por Erkossa, Teklu, Laekemariam, Fanuel, Abera, Wuletawu, Tamene, Lulseged D.

“…The maps have persistently revealed the deficiency of N, P, potassium, sulfur, zinc, and boron across the surveyed areas. …”
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Yield response of barley to the application of mineral fertilizers containing major nutrients on Cambisols and Vertisols in Ethiopia por Shewangizaw, Beza, Gurumu, Gebreyes, Agegnehu, Getachew, Eshetu, Mulugeta, Assefa, Shawl, Hadgu, Fisseha, Ahmed, Jemal Seid, Tibebe, Degefie, Sileshi, Gudeta W., Tamene, Lulseged D.

“…The objectives of this study were to (1) determine the optimum rates of nitrogen (N), phosphorus (P), potassium (K), and sulfur (S) fertilizers under a balanced fertilization of other macro- and micronutrients (zinc and boron) and (2) quantify the agronomic efficiency of N and P on Cambisols and Vertisols. …”
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A data-mining approach for developing site-specific fertilizer response functions across the wheat-growing environments in Ethiopia por Abera, Wuletawu, Tamene, Lulseged D., Tesfaye, Kindie, Jiménez, Daniel, Dorado, Hugo, Erkossa, Teklu, Kihara, Job Maguta, Ahmed, Jemal Seid, Amede, Tilahun, Ramírez Villegas, Julián Armando

“…The approach used a machine-learning model (random forest) to capture the relationship between nutrients – nitrogen (N), phosphorous (P), potassium (K), and sulfur (S) – and wheat yield. The model explained about 83, 82, 47, and 69% of variances of yield for N, P, K, and S omission, respectively, with consistent performance across training and testing datasets. …”
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Effect of fertilizer combinations on soil chemical properties, growth and yield of cassava (Manihot esculenta Crantz) in Ogun State por Oyebade, B.A.

“…This necessitated testing the effect of eleven different fertilizer types: Control (no fertilizer), recommended rate of nitrogen (N), phosphorus (P), potassium (K), half recommended rate of N, P, K, NPK + Micro-nutrients, NP, NK, PK, half N + P, K, half P + N, K, half K + N, P and half K + P on cassava growth and yield, and on the dynamics of soil chemical properties (NH4+-N, NO3--N, electrical conductivity, pH and available phosphorus). …”
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Sustainable intensification of wheat production under smallholder farming systems in Burera, Musanze and Nyamagabe districts of Rwanda por Cyamweshi, Athanase Rusanganwa, Nabahungu, Nsharwasi Léon, Mirali, Jackson Cirhuza, Kihara, Job Maguta, Oduor, George, Rware, Harrison, Sileshi, Gudeta Weldesemayat

“…The objective of this study was to assess the use of combinations of nitrogen (N), phosphorus (P), potassium (K), magnesium (Mg), zinc (Zn) and boron (B) in wheat production in terms of nutrients management specifically, crop yield, production risk, input use efficiency and economic returns on smallholder farms. …”
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Enhancing productivity, soil health, and reducing global warming potential through diverse conservation agriculture cropping systems in India's Western Indo-Gangetic Plains por Gora, Manoj Kumar, Jat, Hanuman Sahay, Ladha, Jagdish Kumar, Choudhary, Madhu, Sharma, Parbodh Chander, Yadav, Arvind K., Singh, Love Kumar, Sapkota, Tek B., Singh, Yadvinder, Prajapat, Kailash, Yadav, Rajender Kumar, Jat, Mangi Lal, Krupnik, Timothy J., Gathala, Mahesh Kumar

“…The study assessed system crop productivity, economic returns, soil quality (organic carbon; OC, nitrogen; N, phosphorus; P, potassium; K contents, bulk density; BD, soil aggregation, infiltration rates, microbial counts, and earthworm density), and GHG emissions. …”
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Meta-analysis approach to measure the effect of integrated nutrient management on crop performance, microbial activity, and carbon stocks in Indian soils por Padbhushan, Rajeev, Sharma, Sheetal, Kumar, Upendra, Rana, D.S., Kohli, Anshuman, Kaviraj, Megha, Parmar, Brajendra, Kumar, Rajkishore, Annapurna, K., Sinha, Abhas Kumar, Gupta, Vadakattu V.S.R.

“…The results showed that the yield of rice and wheat was 1.4 and 4.9% more in INM than that in 100% NPK (N: nitrogen, P: phosphorous, and K: potassium), and that respective yields were comparatively higher in loamy soils (2.8%) and clayey soils (1.0%). …”
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Combined effects of salt-tolerant varieties and improved nutrient management practices on rice yield and profitability under salt-affected soils in the West African Sahel por Ibrahim, Ali, Kabore, J.E., Kalimuthu, Senthilkumar, Manneh, Baboucarr, Faye, O.N., Cisse, M., Saito, Kazuki

“…Seven treatments including T1: recommended practices (Sahel 108, broadcasting, and nitrogen (N) and phosphorus (P) fertilizers); T2: T1 + potassium (K) fertilizer; T3: T2 + gypsum + zinc (Zn); T4: NPK with salt-tolerant rice variety (ISRIZ 10), T5: T4 + gypsum + Zn, T6: NPK with salt-tolerant rice variety (Sahel 108-Saltol), and T7: T6 + gypsum + Zn were evaluated in on-station trials in saline soils with EC value ˃ 4 dS/m. …”
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Reversibility of soil productivity decline with organic matter of differing quality along a degradation gradient por Kimetu, J., Lehmann, Johannes, Ngoze, S., Mugendi, D., Kinyangi, James, Riha, S., Verchot, Louis V., Recha, John W.M., Pell, A.

“…Productivity remained at a low level of 3.0 t grain ha-1 across the chronosequence stretching up to 105 years of continuous cultivation despite full N–phosphorus (P)–potassium (K) fertilization (120–100–100 kg ha−1). …”
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Sale of fresh forage: a new cash crop for smallholder farmers in Yasothon, Thailand por Nakamanee, G, Srisomporn, W, Phengsavanh, P, Samson, J, Stür, Werner W.

“…The use of these fertilisers results in an oversupply of 200 400 kg/ha of phosphorus per year and a large deficit of potassium. One possible solution would be to substitute cattle manure, with a more suitable N:P:K ratio of 1:0.3:0.8, for chicken manure. …”
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Fertilizer micro-dosing increases crop yield in the Sahelian low-input cropping system: a success with a shadow por Ibrahim, A., Abaidoo, Robert C., Fatondji, D., Opoku, A.

“…Two fertilizer micro-dosing treatments [2 g hill−1 of diammonium phosphate (DAP) and 6 g hill−1 of compound fertilizer Nitrogen-Phosphorus-Potassium (NPK) (15-15-15)] and three rates of manure (100 g hill−1, 200 g hill−1 and 300 g hill−1) and the relevant control treatments were arranged in a factorial experiment organized in a randomized complete block design with three replications. …”
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Mango cultivation in Benin por Vayssières, Jean-François, Sinzogan, A.A.C., Adandonon, A., Coulibaly, O., Bokonon-Ganta, A.H.

“…As it ripens at the end of the dry season and at the start of the rainy season, the mango is a fundamental source of nutrition for rural populations living in the Soudano-Sahelian regions of West Africa: it is rich in potassium, alphacarotene, vitamin C and calcium. Increased production and marketing of undamaged mangoes are important in reducing poverty, particularly in northern-central Benin (Soudanian areas). …”
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