Resultados de búsqueda - "field experiment"

Effect of intercropping maize and soybeans on Striga hermonthica parasitism and yield of maize por Odhiambo, JA, Vanlauwe, Bernard, Tabu, IM, Kanampiu, F.K., Khan, Z.

“…Experiments were conducted with strigol Nijmegen 1® (GR 24), a synthetic stimulant, as a check. In the pot and field experiments, maize (variety WH507) was intercropped with soybeans. …”
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Ecological risk assessment of current-use pesticides in the Sixaola Watershed, Costa Rica por Polidoro, Beth A.

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Forage yield gap analysis for tall fescue pastures in Argentina: A modelling approach por Insua, Juan Ramón, Machado, Claudio, Garcia, Sergio, Berone, German Dario

“…After tall fescue‐specific calibration, the model accurately represented the response of tall fescue herbage mass to irrigation and N fertilization (root mean square error of prediction <550 kg DM ha−1, R2 > .70) observed in thirteen single‐season, controlled, field experiments. Results from a 40‐year simulation show that the gap between fertilized and unfertilized tall fescue pastures in Argentina can exceed 14 t DM ha−1 year−1. …”
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Farmer perception and valuation of seed quality: Evidence from bean and cowpea seed auctions in Tanzania and Ghana por Maredia, Mywish K., Shupp, Robert, Opoku, Edward, Mishili, Fulgence, Reyes, Byron A., Kusolwa, Paul, Kusi, Francis, Kudra, Abdul

“…Double blind field experiments and experimental auctions were conducted with bean and cowpea farmers in Tanzania and Ghana to gauge the relative demand for three types of seed products that differ in price and quality: certified, quality declared, and recycled. …”
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What role does conflict play in fertilizer use and maize yield response in Nigeria? por Amare, Mulubrhan, Andam, Kwaw S., Balana, Bedru, Olanrewaju, Opeyemi, Edeh, Hyacinth O.

“…Understanding this effect of conflict on fertilizer use and maize yield response could be relevant to better understand smallholders resource use decisions in the context of other countries experiencing similar violent and serves as building block for understanding how factors outside the control of agronomic field experiments affect economic incentives for fertilizer use and yield of smallholder farmers.…”
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Environmental control of malting barley response to nitrogen in the Pampas, Argentina por Prystupa, Pablo, Ferraris, Gustavo Nestor, Ventimiglia, Luis Alberto, Loewy, Tomas, Couretot, Lucrecia Alejandra, Bergh, Ricardo Guillermo, Gómez, Francisco, Gutierrez Boem, Flavio Hernán

“…Twenty five single-year field experiments were established in order to assess the effects of nitrogen fertilization on grain yield, size, and protein concentration, and to explain its response to fertilization with soil, climate, and crop management variables easy to collect. …”
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Moisture-dependent pupation of the invasive thrips Chaetanaphothrips orchidii: implications for its management por Juncá-Morales, Carolina, Catalán, José, Gómez-Martínez, María A., Tena, Alejandro

“…We evaluated this assumption in two field experiments. Our results provide key information to improve the sustainable management of C. orchidii in the soil, especially in summer. …”
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Moisture-dependent pupation of the invasive thrips Chaetanaphothrips orchidii: implications for its management [Dataset] por Juncá-Morales, Carolina, Catalán, José, Gómez-Martínez, María A., Intrigliolo, Diego S., Tena, Alejandro

“…We evaluated this assumption in two field experiments. Our results provide key information to improve the sustainable management of C. orchidii in the soil, especially in summer. …”
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Fertilización foliar del frijol común (Phaseolus vulgaris L.): II. Efecto de la aplicación foliar del nitrógeno con y sin aplicación de nitrógeno al suelo por Rosolem, C.A, Machado, J.R, Balducci Junior, J.J, Hing, L.T.

“…In two field experiments, the effects of nitrogen fertilizers applied in the soil and/or on the leaves on bean production were studied. …”
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Efecto de los antitranspirantes sobre el crecimiento y producción del sorgo de grano por Kuganathan, A, Palaniappan, S

“…Field experiments were conducted at Tamil Nadu Agricultural University, Coimbatore, India during the summer and monsoon seasons of 1977 on grain sorghum (CSH 5) under the conditions of limited water supply. …”
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"Torbó", una enfermedad de las papas que se presenta en Costa Rica por Jolly, A.

“…Evidence was obtained of the existence of more than one strain of the fungus, which differed in pathogenicity and colony features. Field experiments for the control of the disease were made in the northern part of Cartago, Costa Rica, using several fungicides. …”
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Estimation of symbiotically fixed nitrogen using extended N difference methods por Hauser, S.

“…This paper evaluates the I5N dilution and N difference methods, and reports on the results of field experiments conducted with faba beans (Viciafaha) and peas (Pisum sativum). …”
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Effect of Neem Seed Kernel Extracts in the Management of Rice Stem Borers in the Field in Nigeria por Ogah, O.O., Omoloye, A.A., Nwilene, F.E., Nwogbaga, A.C.

“…Hence in this study field experiments wereconducted to determine the comparative efficacy of neem seed kernel extracts(Azadirachta indica; (Neem) and synthetic insecticide (Carbofuradan) against ricestem borers in Nigeria during 2006/07 farming season. …”
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Identification of siderophore producing and cynogenic fluorescent Pseudomonas and a simple confrontation assay to identify potential bio-control agent for collar rot of chickpea por Kotasthane, Anil S., Agrawal, Toshy, Zaidi, Najam Waris, Singh, U.S.

“…Vigorous plant growth was observed following seed bacterization with P141, P200 and P240. In field experiments, seed bacterization with selected bacterial isolates resulted in reduced collar rot (S. rolfsii) incidence.…”
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A simulation-model of competition between winter-wheat and avena-fatua for light por Weaver, S.E., Kropff, M.J., Cousens, R.

“…Parameter values were derived from the literature and from field experiments with each species grown in monoculture. …”
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Effect of interrow spacing and weeding frequency on the performance of selected rice cultivals on hydromorphic soils of West Africa por Akobundu, I., Ahissou, A.

“…Field experiments were conducted on hydromorphic soils at the International Institute of Tropical Agriculture (IITA), Ibadan, Nigeria to determine the effects of crop-management practices on rice yield. …”
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Nodulation and growth of leucaena leucocephala (Lam.) de wit as affected by inoculation and N fertilizer por Sanginga, N., Mulongoy, K., Ayanaba, A.

“…Leonard jar, pot and field experiments examined the effects of inoculation and the influence of nitrogen fertilizer on nodulation, nitrogen fixation and growth ofLeucaena leucocephala (Lam.) de Wit at IITA, Ibadan, Nigeria. …”
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Gender, nutrition- and climate-smart food production: opportunities and trade-offs por Beuchelt, TD, Badstue, Lone B.

“…The paper is based on a literature review and field experiences from Zambia and Mexico. Findings point up situations where the promotion of CA for smallholders in developing countries may have undesired effects from gender and human development perspectives, specifically relating to drudgery, nutrition and food security, residue use, assets, mechanization and extension. …”
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Assessing the adequacy of the simulation model LATEBLIGHT under Nicaraguan conditions por Blandon-Diaz, J.U., Forbes, G., Andrade-Piedra, J.L., Yuen JE

“…During 2007 to 2008, five field experiments were conducted in three potato-production regions in northern Nicaragua. …”
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Genotypic variation in biological nitrogen fixation by common bean por Hardarson, G., Bliss, Fredrick A., Cigales-Rivero, MR, Henson, R.A., Kipe-Nolt, Judith A., Longeri, L, Manrique, A, Pena-Cabriales, JJ, Pereira, Pedro Antônio Arraes, Sanabria, C.A., Tsai, Siu Mui

“…Field experiments were performed in Austria, Brazil, Chile, Colombia, Guatemala, Mexico and Peru as part of an FAO/IAEA Co-ordinated Research Programme to investigate the nitrogen fixing potential of cultivars and breeding lines of common bean (Phaseolus vulgaris L.). …”
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