Resultados de búsqueda - "urea"

Desarrollo y difusión de las mejores prácticas de manejo (MPM) para aumentar la eficiencia productiva y disminuir el impacto ambiental

“…Las fuentes de fertilizantes utilizadas fueron: urea (45% N), fosfato diamónico (46% P2 o5), muriato de potasio (60% K2o) y carbonato de calcio. …”
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Climate change and variability impacts on grazing herds: Insights from a system dynamics approach for semi‐arid Australian rangelands por Godde, Cécile M., Dizyee, Kanar, Ash, Andrew, Thornton, Philip K., Sloat, Lindsey L., Roura, Eugeni, Henderson, Benjamin B., Herrero, Mario

“…Climate contributed the most to the variance in stocking rates, followed by forage productivity levels and feeding supplementation practices (with or without urea and molasses). While intensification strategies and favourable climates increased long‐term herd sizes, they also resulted in larger reductions in animal numbers during droughts and raised total enteric methane emissions. …”
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Effect of fertilizer inputs on productivity and herbage quality of native pasture in degraded tropical grasslands por Bedaso, N.H., Bezabih, Melkamu, Zewdu, T., Adie, Aberra, Khan, N.A., Jones, Christopher S., Mekonnen, Kindu, Woldemeskel, Endalkachew

“…The treatments were control (no application of fertilizer), commercial fertilizer (50 kg urea ha–1 and 100 kg diammonium phosphate [DAP] ha–1), cattle manure (7.5 t ha–1), wood ash (3 t ha–1), and lime (7.5 t ha–1). …”
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Cassava Production Efficiency in Southern Ethiopia: The Parametric Model Analysis por Tafesse, Alula, Mena, Bekele, Belay, Abrham, Aynekulu, Ermias, Recha, John W.M., Osano, Philip M., Darr, Dietrich, Demissie, Teferi Dejene, Endalamaw, Tefera B., Solomon, Dawit

“…The study found that land size, urea fertilizer application, and cassava planting cut all had a positive and significant effect on cassava production. …”
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Rice yield gaps and nitrogen-use efficiency in the Northwestern Indo-Gangetic Plains of India: Evidence based insights from heterogeneous farmers’ practices por Nayak, Harisankar, Silva, ‪João Vasco, Parihar, Chiter Mal, Kakraliya, S., Krupnik, Timothy J., Bijarniya, Deepak, Jat, Mangi Lal, Sharma, Parbodh Chander, Jat, Hanuman Sahay, Sidhu, Harminder Singh, Sapkota, Tek Bahadur

“…Improving PFP-N appears to be best achieved through better matching of N rates to the variety types cultivated and by adjusting the amount of urea applied in the 3rd split in correspondance with the amount of diammonium-phosphate applied earlier in the season. …”
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Camels and cattle respond differently in milk phenol excretion and milk fatty acid profile to free ranging conditions in East-African rangelands por Leparmarai, Paul Taipa, Kunz, Carmen, Mwangi, David Miano, Gluecks, Ilona V., Kreuzer, Michael, Marquardt, Svenja

“…Half of each group received a urea-molasses supplement at night. Intakes of nutrients and phenols were estimated through scan sampling. …”
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Technologies for African Agricultural Transformation (TAAT) celebrates 143 interventions in 132 sites across Africa: Updates 2018, Issue 001 por Technologies for African Agricultural Transformation

“…This issue covers the Program's first year of implementation under the following subjects: About TAAT African Development Bank seeks partnerships to lift one billion people out of hunger How TAAT is empowering women farmers through Urea Deep Placement Technology Fertilizer Microdose Technology leads to higher yields among farmers in Mali TAAT’s Business Platform approach boosts access to high iron beans in Zimbabwe Farm to Fork: TAAT engages youth in growing beans TAAT trains trainers on managing innovation platforms to amplify hotspots in the local tech How TAAT’s deployment of feed resources is meeting Ethiopia’s livestock needs TAAT: Enabling the passion of African youth in Agriculture Deployment of proven technologies leads to increased aquaculture productivity New technologies and best management practices boost aquaculture How TAAT Technologies are taking cassava to a new frontier in Africa TAAT: Steering Africa towards a water-secured wheat production Feed Africa: Stakeholders zero in on partnerships for technology delivery TAAT enhances the adoption of improved pearl millet Crop residue trade leads to leads to increase in farmers’ income in Nigeria TAAT approach to combating fall armyworm offers hope to millions TAAT records increased food production and income through maize technologies TAAT supports harmonization of seed policy in Southern and Eastern Africa Democratic Republic of Congo: Implementing reforms for seed sector development Sierra Leone: Stakeholder engagement for seed sector reform TAAT transforms Sudanese wheat seed sector with proven technologies Rwandan youth find self-employment in processing orange-fleshed sweet potato How TAAT is rewriting the African rice story Sights and Visions of African Agricultural Transformation.…”
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Rice productivity in Myanmar: Assessment of the 2021 monsoon and outlook for 2022 por Myanmar Agriculture Policy Support Activity

“…Prices for most inputs used in rice cultivation increased significantly between these two seasons. Prices of urea, the most important chemical fertilizer used by rice farmers, increased by 56 percent on average and mechanization costs increased by 19 percent. 4. …”
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Monitoring the agri-food system in Myanmar: Agricultural input retailers – June 2021 survey round por Myanmar Agriculture Support Activity

“…Key findings: ▪ Prices of key agricultural inputs–fertilizer, pesticides, maize seed, and vegetable seed– are higher in June 2021 compared to June 2020 during the first wave of COVID-19. Onaverage, urea fertilizer prices are 52 percent higher and compound fertilizer prices are 29 percent higher. ▪ Reported input sales are much lower in June 2021 than in June 2020, with fertilizer sales volumes 48 percent lower on average and maize seed 39 percent lower on average. ▪ There continue to be widespread business disruptions stemming from political instability. …”
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Determinants of chemical fertilizer use in Nepal: Insights based on price responsiveness and income effects por Takeshima, Hiroyuki, Adhikari, Rajendra Prasad, Kaphle, Basu Dev, Shivakoti, Sabnam, Kumar, Anjani

“…Using three rounds of the Nepal Living Standards Survey as well as secondary data, we examine the determinants of inorganic fertilizer (urea and DAP) use, as well as the marginal income returns from fertilizer use at the farm-household level. …”
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Rice productivity in Myanmar: Assessment of the 2024 dry season por Myanmar Agrifood Program for Strategy and Analysis

“…It is found that: • Prices of inputs used in paddy production – labor and mechanization – increased significantly between these two growing seasons by between 36-38 and 59 percent respectively, on average. On the other hand, urea prices declined by 1 percent. Paddy prices at the farm increased by 14 percent. • Nominal profits for paddy rice farmers increased over the last two seasons. …”
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A drought‐responsive rice amidohydrolase is the elusive plant guanine deaminase with the potential to modulate the epigenome por Gotarkar, Dhananjay, Longkumer, Toshisangba, Yamamoto, Naoki, Nanda, Amrit Kaur, Iglesias, Tamara, Li, Lin-Feng, Miro, Berta, Blanco Gonzalez, Elisa, Montes Bayon, Maria, Olsen, Kenneth M., Hsing, Yue-Ie Caroline, Kohli, Ajay

“…The content of cellular xanthine is important because of its catabolic products allantoin, ureides, and urea which play roles in water and nitrogen stress tolerance among others. …”
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Effects of residue decomposition on productivity and soil fertility in rice-wheat rotation por Yadvinder-Singh, Bijay-Singh, Ladha, J.K., Khind, C.S., Khera, T.S., Bueno, C.S.

“…The immobilization of urea N decreased when residue was allowed to decompose for 10‐d or longer. …”
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Influence of available nitrogen and rice genotype on associative dinitrogen fixation por Malarvizhi, P., Ladha, J.K.

“…Flooded soils were puddled with and without 99.5 atom 15N%‐labeled urea to minimize spatial variation of the isotope. …”
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Essential commodities prices, availability, and market actors’ perceptions: April 2025 por Siddig, Khalid, Nigus, Halefom Yigzaw, Mohamed, Shima, Abushama, Hala, Rakhy, Tarig

“…Fertilizer prices fluctuated: urea prices experienced a modest increase fol lowed by a decline, while DAP prices rose sharply in April. …”
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Farm commercialization and farm services: Myanmar Agricultural Performance Survey (dry season 2025) por Minten, Bart, Ei Win, Hnin

“…While output prices mostly fell, input prices continued to rise in the 2025 dry season compared to 2024. Urea prices increased by 18 percent. Mechanized plowing costs rose by 29 percent (for 4-wheel tractors), while hired labor costs surged by 47 percent for men and 43 percent for women. …”
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Effects of dietary protein supplementation and infection with gastrointestinal nematode parasites on some nutritional and metabolic parameters in Ethiopian Menz and Horro sheep por Haile, Aynalem, Anindo, D.O., Tembely, S., Mukasa-Mugerwa, E., Tibbo, Markos, Yami, A., Baker, R.L., Rege, J.E.O.

“…The factorial experimental design involved two breeds, two infection treatments (infected vs. noninfected) and three nutrition treatments [hay plus wheat bran (basal diet), hay plus molasses urea block (MUB), hay plus cotton seed cake (CSC)]. …”
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Leucaena hedgerow intercropping and cattle manure application in the Ethiopian highlands. II. Maize yields and nutrient uptake por Lupwayi, N.Z., Haque, I., Saka, A.R., Siaw, D.E.K.A.

“…For each leucaena species, the experiment had 16 treatments resulting from a factorial combination of four levels of leucaena leaf prunings (no prunings applied: first prunings applied; first and second prunings applied: first, second and third prunings (no prunings applied: first prunings applied; first and second prunings applied: first, second and third prunings applied), two levels of air-dried cattle manure (0 and 3 t dry matter ha-1 and two levels of N fertilizer (0 and 40 kg N ha-1 as urea). Uptake of N, P and K increased significantly with application of the three nutrient sources, but uptake of Ca and Mg either did not respond or decreased with application of prunings and manure. …”
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Nitrogen mineralization and crop uptake from surface-applied leaves of green manure species on a tropical volcanic-ash soil por Cobo Borrero, Juan G., Barrios, E., Kass, DCL, Thomas, Richard J.

“…GM treatments were compared to urea at two rates, 50 kg N ha 1 (FN50) and 100 kg N ha 1 (FN100), and to a control with no fertilizer application (FN0). …”
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Organic resource quality influences short-term aggregate dynamics and soil organic carbon and nitrogen accumulation por Chivenge, Pauline P., Vanlauwe, Bernard, Gentile, R, Six, Johan

“…Each treatment was fertilized with 120 kg N ha?1 as urea [(NH2)2CO] or not fertilized. The soils used in the mesocosms were obtained from a three-year old-field experiment in which the same treatments as in the mesocosm were applied annually. …”
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