Resultados de búsqueda - "urea"

Impact of nitrogen-fixation bacteria on nitrogen-fixation efficiency of Bambara groundnut [Vigna subterranea (L) Verdc] genotypes por Bitire, T.D., Abberton, M., Tella, E.O., Edemodu, A., Oyatomi, O., Babalola, O.O.

“…While six seeds from each BGN genotype were coated with each of the following nitrogen-fixation bacteria (*Bradyrhizobium japonicum* strains), FA3, USDA110, IRJ2180A, and RACA6, nitrogen fertilizer (urea, 20 kg/ha) was applied as a check to the nitrogen-fixation bacteria to seedlings of BGN genotypes 2 weeks after planting in both glasshouses and fields. …”
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Oat–Field Pea Intercropping for Sustainable Oat Production: Effect on Yield, Nutritive Value and Environmental Impact por Tamiru, Metekia, Alkhtib, Ashraf, Belachew, Basha, Demeke, Solomon, Worku, Zemene, Wamatu, Jane, Burton, Emily

“…The trial was laid out in a randomized complete block design with the following treatments: oat-0 (oat (Avena sativa L., SRCP X 80 Ab 2291 variety) without N fertilization (urea)), oat-23 (oat fertilised with 23 kg N/ha), oat-46 (oat fertilised with 46 kg N/ha), O1P1 (oat intercropped with field pea (Pisum sativum L., local variety) a ratio of 1:1), O1P2 (oat intercropped with field pea a ratio of 1:2), and O2P1 (oat intercropped with field pea at a ratio of 2:1). …”
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Monitoring the agri-food system in Myanmar: Agricultural input retailers – August 2023 survey round por Myanmar Agriculture Policy Support Activity

“…. • Nominal fertilizer prices remain high in 2023, but sales have increased and prices relative to rice prices decreased 50 percent for urea and 38 percent for compound compared to 2022. • The percentage of input retailers reporting transportation disruptions has declined over the past 12 months, but 66 percent of retailers still report higher transportation costs. • Import challenges are now the most significant disruption to input retailers’ businesses, increased more than sixfold from less than 5 percent in 2022 to 30 percent in 2023. …”
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Myanmar Agricultural Performance Survey (dry season 2023): Farm commercialization por Myanmar Agriculture Policy Support Activity

“….  Input prices during the dry season of 2023 increased compared to the same period in 2022 by 14 percent for urea, 19 percent for mechanization, and 15 and 22 percent for hired labor of men and women, respectively.  Farmgate prices are all on the rise compared to a year earlier. …”
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Temporal Patterns Of Methane Emissions From Wetland Rice Fields Treated By Different Modes Of N-Application por Wassmann, R., Neue, H.U., Lantin, R.S., Aduna, J.B., Alberto, M. C. R., Andales, M.J., Vandergon, H. A. C. D., Hoffman, H., Papen, H., Rennenberg, H., Seiler, W.

“…Methane emission was monitored in an irrigated Aquandic Epiaqualf planted to rice cultivar IR72. Urea fertilizer was applied using four modes: (1) broadcast 10 days after transplanting, (2) broadcast at transplanting, (3) broadcast and incorporated at final harrowing, and (4) deep placement as sulfur‐coated granules. …”
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Effects of breed and dietary protein supplementation on the responses to gastro intestinal nematode infections in Ethiopian sheep por Haile, Aynalem, Tembely, S., Anindo, D.O., Mukasa-Mugerwa, E., Rege, J.E.O., Yami, A., Baker, R.L.

“…The factorial design involved two breeds, two infection treatments (infected vs non-infected) and three dietary protein treatments (hay and wheat bran (basal diet), hay plus molasses urea block (MUB), hay plus cotton seed cake (CSC)). …”
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Restoration of terre de barre fertility using pigeonpea grown in rotation or intercropping with maize in the derived savanna of Benin por Aihou, K., Sanginga, Nteranya, Vanlauwe, Bernard, Diels, J., Merkx, R, Cleemput, O. van

“…The rate of N-fertilizer applied was 74 kg N as urea (28 kg N/ha 2 weeks after planting maize and 46 kg N/ha 6 weeks after planting maize). …”
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Within-farm soil fertility gradients affect response of maize to fertilizer application in Western Kenya por Vanlauwe, Bernard, Tittonell, Pablo A., Mukulama, J

“…In each of the farms, the following treatments were laid out in three fields with different soil fertility status at different distances from the homestead (close, mid-distance, remote fields): no inputs, application of NPK, NP, NK, or PK fertiliser (urea, triple super phosphate, KCl) to maize. Total soil N decreased at all sites with distance to the homestead (from 1.30 to 1.06 g kg?…”
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Nitrous oxide emissions in Midwest US maize production vary widely with band-injected N fertilizer rates, timing and nitrapyrin presence por Burzaco JP, Smith, D.R., Vyn TJ

“…Our research objectives were to (i) assess the impacts of urea–ammonium nitrate (UAN) management practices (timing, rate and nitrification inhibitor) and environmental variables on growing-season N2O fluxes and (ii) identify UAN treatment combinations that both reduce N2O emissions and optimize maize productivity. …”
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Grazing Behavior and milk yield of Senegalese Sahel goat por Cisse, M., Ly, I., Nianogo, A.J., Sane, I., Sawadogo, J.G., N'Diaye, M., Awad, C., Fall, Y.

“…From week 1 to 14 of lactation, does from group 1 lost more BW than those of group 2 (-0.7 kg versus -0.2 kg; P > 0.05). Plasma urea level was higher in the early stage of lactation then decreased from week 8 post-kidding. …”
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Multiplicacion de semillas de especies forrajeras con ganaderos en la region de Pucallpa - Peru por Hidalgo R., L.F.

“…Se obtuvieron 6.75 kg de semilla pura/ha de B. decumbens con 2 aplicaciones a voleo de 50 kg de urea/ha y una de 100 kg superfosfato triple y 50 de KCl/ha. …”
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Options for soil organic carbon maintenance under intensive cropping in the West African savanna por Diels, J., Lyasse, O., Sanginga, N., Vanlauwe, Bernard, Aihou, K., Iwuafor, E.N.O., Merckx, Roel, Deckers, J.

“…We also indicated the scope for a more mechanistic interpretation, focusing on the effect of increased pH buffering as a way to minimize losses from NH3 volatilization with urea applications in poorly buffered soils.…”
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La fruticultura de carozo en Valle Medio por Besada, Carmina

“…De los fertilizantes químicos el más utilizado era la urea.…”
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Asociación entre mancha amarilla (Drechslera tritici-repentis), genotipos de trigo y diferentes dosis de nitrógeno. Campaña 2012. Paraná, Entre Ríos. por Velazquez, Pablo Daniel, Formento, Angela Norma

“…El objetivo del trabajo fue determinar los niveles de MA en diferentes cultivares comerciales de trigo fertilizados con diferentes dosis de urea.…”
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Impacto de la fertilización nitrogenada sobre la calidad de una pastura de agropiro y alfalfa en San Luis = Impact of nitrogen fertilization on the nutritional quality of a wheatgr... por Martinez, Manuel, Panza, Alberto Alfredo, Echaide Suaiter, Guadalupe

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Enfermedades de los bovinos [enero 2022] por Margineda, Carlos Augusto, Castro, Damian Jesus Nahuel

“…Algunos de los episodios ocurrieron por errores operativos en la formulación del alimento y denotan la importancia de la capacitación del personal que trabajan elaborando los alimentos concentrados (ej: intoxicación con monensina o con urea). Otros casos los incluimos, debido a que la consideramos una enfermedad reemergente, como la sarna bovina o emergente, como la micoplasmosis. …”
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Control de Musca domestica con diflubenzurón añadido al sustituto lácteo de terneros en crianza artificial = Control of Musca domestica with diflubenzuron added to the milk replace... por Muchiut, Sebastian, Fahler, Romina Paola, Ramirez, S.M.

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Response of determinate and indeterminate soybean cultivars to basal and topdressing N fertilization compared to sole inoculation with Bradyrhizobium por Kaschuka, Glaciela, Nogueira, Marco Antonio, De Luca, Marcos Javier, Hungria, Mariangela

“…The experiments consisted of four treatments, all inoculated with efficient Bradyrhizobium strains, but with differences in N fertilizer (as urea) application: (T1) control without N fertilizer; (T2) basal application of 30 kg N ha−1 at sowing; (T3) topdressing of 50 kg N ha−1 at full flowering; (T4) 30 kg N ha−1 and 50 kg N ha−1 as basal and topdressing, respectively. …”
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The effect of pre-slaughter stressors on physiological indicators and meat quality traits on Merino lambs por Zimerman, Maria, Domingo Mendizabal, Ernesto, Grigioni, Gabriela Maria, Taddeo, Héctor Raúl, Willems, Priscila Mabel

“…Fasted lambs had greater (P < 0.05) urea and cortisol concentrations than control. Exercise had no effects (P > 0.05) in physiological indicators and lambs exposed to barking dogs had greater (P < 0.05) cortisol concentration compared with control. …”
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Ensayo comparativo de variedades de Trigo : resultados de los ensayos realizado en conjunto por INTA, AFA y la UNNOBA, campaña 2020 por Telleria, María Guadalupe, Melilli, Maria Paula, Fariña, Leandro, Chaver, Ana

“…Durante el macollaje se realizó una fertilización nitrogenada con 240 kg ha-1 de urea (110 kg N ha-1). El diseño del ensayo fue en bloques completos aleatorizados con cuatro repeticiones. …”
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