Resultados de búsqueda - "field experiment"

The Participatory Market Chain Approach (PMCA): From the Andes to Africa and Asia. por Devaux, A., Ordinola, M., Mayanja, S., Campilan, D., Horton, D.

“…Both the approach and an emerging network of PMCA practitioners around the world have been enriched by South-South knowledge exchange and feedback from field experiences.…”
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Do grassroots interventions relax behavioral constraints to the adoption of nutrition-sensitive food production systems? por Alvi, Muzna, Ward, Patrick S., Makhija, Simrin, Spielman, David J.

“…We use a series of lab-in-field experiments and survey instruments in Odisha, India to elicit male and female farmers’ preferences for risk, aversion to loss, empowerment and aspirations for one’s self and children. …”
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Do grassroots interventions relax behavioral constraints to the adoption of nutrition-sensitive food production systems? por Alvi, Muzna, Ward, Patrick S., Makhija, Simrin, Spielman, David J.

Materias: “…field experimentation…”
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A field study for assessing risk-contingent credit for Kenyan pastoralists and dairy farmers por Shee, Apurba, Turvey, Calum G., Woodard, Joshua

“…The paper investigates the uptake potential of RCC through qualitative assessment of field experiments and focus groups.– The paper presents a method of community engagement through a participatory game played in a series of Focus Group Discussions (FGDs). …”
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Mesures mises en oevre aux champs pour reduire les risques sanitaires microbiologiques pour les consommateurs d’une agriculture informelle irriguee avec des eaux usees. In French.... por Keraita, Bernard N., Konradsen, Flemming, Drechsel, Pay

“…In addition, the chapter highlights some practical strategies to implement these measures, based largely on field experiences in Ghana. Although most measures discussed do not fully eliminate possible health risks, they can significantly complement other pathogen barriers. …”
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Farm-based measures for reducing microbiological health risks for consumers from informal wastewater-irrigated agriculture por Keraita, Bernard N., Konradsen, Flemming, Drechsel, Pay

“…In addition, the chapter highlights some practical strategies to implement these measures, based largely on field experiences in Ghana. Although most measures discussed do not fully eliminate possible health risks, they can significantly complement other pathogen barriers. …”
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Using ceres-maize model to determine the nitrogen fertilization requirements of early maturing maize in the sudan savanna of Nigeria por Adnan, A.A., Jibrin, J.M., Kamara, A.Y., Abdulrahman, B.L., Shaibu, A.S.

“…Data were collected from 2013 and 2014 field experiments conducted in BUK Nigeria. The experiments consisted of 3 nitrogen fertilizer levels (0, 60, and 120 Kg N ha−1) and 2 early maize varieties (EVDT and 2009 TZEEW). …”
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Fertilización foliar del frijol común (Phaseolus vulgaris L.): I. El efecto del tiempo de aplicación de nitrógeno por Machado, J.R, Rosolem, C.A, Balducci Junior, J.J, Nakagawa, J.

“…To study the effects of foliar fertilization with nitrogen in different stages of plant growth, two field experiments were set out in a sandy loam soil. The first experiment was conducted during the wet season and the second during the dry season. …”
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Uso de la isoterma de adsorción para evaluar requerimientos de fósforo, 1: Isotermas de adsorción de los suelos [Venezuela]. por López Hernández, D, Coronel, I, Alvarez, L.

“…The method consisted in determining, firstly the phosphorus adsorption isotherm (for each soil) and secondly, the P requirement of the plant crop under study, determined from pot or field experiments This first paper details the study performed on the chemical characteristics of six representative Venezuelan soils making emphasis in their P— adsorption behaviour It was found that six (6) days is a convenient period for the adsorption reactions to complete (equilibrate) and also that the reaction is temperature dependent: The well known Langnutir's isotherm model was found to adjust at the lower P additions (0-5 ppm P in equilibrium) On the other hand, the Temkin's model allotvs for the use of a wider P fertilizer treatments (until 12 ppm P in equilibrium). …”
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Assessing the mechanisms underlying sunflower grain weight and oil content responses to temperature during grain filling por Angeloni, Patricia, Aguirrezabal, Luis, Echarte, María Mercedes

“…Results obtained in field experiments confirmed this behavior at low radiation. …”
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Calibration and validation of soil water balance (SWB) model in the Inner Argentinian Pampas por Videla Mensegue, Horacio Rogelio, Caviglia, Octavio, Degioanni, Américo José, Marcos, J., Bonadeo, E.

“…We used data from 9 field experiments for calibration and from 116 field experiments for validation. …”
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Web Application for Spatial Modelling of Field Trials por Aparicio, Johan Steven, Ariza-Suárez, Daniel, Raatz, Bodo

“…In plant improvement experimental designs are used to decompose the total phenotypic variance observed in field experiments into at least two components: A genetic and a non-genetic component that is attributable to the spatial variation or environment. …”
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Macro‐ and micronutrients removed by upland and lowland rice cultivars in West Africa por Sahrawat, K.L.

“…Amounts of macro‐ and micronutrient elements removed by improved, upland and lowland rice cultivars were determined in field experiments at two sites in Ivory Coast. Amounts of nitrogen (N), zinc (Zn), and manganese (Mn) removed for 11 rice grain yield by upland and lowland rice cultivars were similar, but the amounts of phosphorus (P), potassium (K), calcium (Ca), and magnesium (Mg) removed were higher for lowland than upland rice. …”
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Investigating the epidemiology of heartwater (Cowdria ruminantium infection) by means of a transmission dynamics model por O'Callaghan, C.J., Medley, G.F., Peter, T.F., Perry, Brian D.

“…The pattern of outcome measures (incidence, case-fatality and proportion of infected hosts) predicted agrees with those described anecdotally from field experience and empirical observation, and demonstrates the concept of endemic stability. …”
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Antibiotic resistance in aquatic environments: priorities and knowledge for water quality modelling por Jampani, Mahesh, Mateo-Sagasta, Javier, Langan, Simon J.

“…IWMI’s proposed source-to-receptor water quality modelling framework captures the fate and transport of antimicrobial contaminants through complex water systems, enabling scenario planning and policy guidance. Drawing on field experiences and interdisciplinary research, the framework aims to inform regulatory responses, investment in treatment technologies, and sustainable waste management. …”
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Methods for rural development projects: food security in practice por Hoddinott, John F.

“…This book, based on IFPRI’s field experience and interaction with a variety of partner organizations, aims to assist development practitioners in overcoming these constraints. …”
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Sources of nitrogen and methods of application for flooded rice. I. Comparison of two methods of applying slow-release and standard fertilizer materials por Simsiman, G.V., De Datta, S.K., Moomaw, J.C.

“…Field experiments with rice were conducted on a flooded soil comparing two standard fertilizers with N fertilizers with various release rates. …”
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Enhancing Soil Nitrogen Use and Biological Nitrogen Fixation in Wetland Rice por Kundu, D.K., Ladha, J.K.

“…Since enhancement of soil nitrogen use in rice and maintenance of the original nitrogen level in soil by stimulating biological nitrogen fixation have not been examined together in the field, elaborate field experiments should be conducted to assess the impacts of such combined practices on long-term soil nitrogen fertility and productivity.…”
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Prospects for Using Minimum and Zero Tillage in Tropical Lowland Rice por De Datta, S.K., BOLTONAND, F.R., LIN, W.L.

“…:Four field experiments were conducted at The International Rice Research Institute during the 1975 and 1976 crop seasons to develop minimum and zero tillage techniques for transplanted rice (Oryza sativa L.). …”
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Inoculation and phosphorus effects on Desmodium intortum and Sesbania sesban in the Ethiopian highlands por Haque, I., Lupwayi, N.Z., Luyindula, N.

“…Field experiments were conducted to study the effects of inoculation and application of P on the productivity of Desmodium intortum on an Ultisol and Sesbania sesban on a Vertisol, Alfisol and Ultisol in the Ethiopian highlands. …”
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