Resultados de búsqueda - "field experiment"

Using upland rice root traits to identifying N use efficient genotypes for limited soil nutrient conditions por Traoré, K., Traoré, O., Bado, V.B.

“…Nitrogen (N) deficiency is one of the most yield-limiting nutrients in upland rice growing area in Burkina Faso. A field experiment was carried out from 2008 to 2010 in Farakoba research center with the objective to evaluate 200 upland rice (Oryza sativa L.) genotypes from WAB, NERICA, CNA, CNAX, IRAT and IR lines for N use efficiency. …”
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Identifying effective message-framing techniques in behaviour change communication for healthy diets: An experimental study of promoting biofortified maize adoption in Ethiopia por Jada, Kaleb Shiferaw, Berg, Marrit van den

“…We help to fill this void by investigating the effect of framed messages (gain vs loss) in stimulating demand for nutritionally enhanced crops. We conducted a field experiment with 648 farmers and found the following key results. …”
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Endowments, expectations, and the value of food safety certification: experimental evidence from fish markets in Nigeria por Shikuku, Kelvin Mashisia, Bulte, Erwin, Lagerkvist, Carl Johan, Nhuong Tran

“…We study the impact of endowments and expectations on reference point formation and measure the value of food safety certification in the context of fish trading on real markets in Nigeria. In our field experiment, consumers can trade a known food item for a novel food item that is superior in terms of food safety––or vice versa. …”
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Seasonality and smallholder market participation in Malawi: A baseline report por Van Campenhout, Bjorn, Nabwire, Leocardia

“…Smallholder farmers in low and middle income countries often sell the bulk of their marketable surplus immediately after the harvest, when prices are at their lowest. As part of a field experiment that tests the effectiveness of both income and expenditure planning to nudge farmers into delaying sales of cash crops, we collected detailed information about market participation from a sample of about 3,500 semi-subsistence farmers in Malawi. …”
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Measuring risk attitudes among Mozambican farmers por de Brauw, Alan, Eozenou, Patrick

Materias: “…field experimentation…”
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Measuring risk attitudes among Mozambican farmers por de Brauw, Alan, Eozenou, Patrick

“…In this paper, we use a relatively large field experiment to explore risk preferences related to sweet potato production among a sample of farmers in northern Mozambique. …”
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Root Response to Water Stress in Rainfed Lowland Rice por Thangaraj, M., O'Toole, J.C., De Datta, S.K.

“…Root length density decreased with decreasing soil moisture and increasing soil mechanical impedance. In a lowland field experiment using a sprinkler irrigation gradient treatment for 19 days during the vegetative growth stage, soil mechanical impedance as low as 0.01 MPa inhibited root growth while values greater than 0.3–0.5 MPa decreased root growth and extension by 75%. …”
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Role of indigo in improving the productivity of rainfed lowland rice-based cropping systems por Agustin, E.O., Ortal, C.I., Pascua Jr, S.R., Sta. Cruz, Pompe C., Padre, A.T., Ventura, W.B., Obien, S.R., Ladha, J.K.

“…A long-term field experiment was conducted to determine the effects of indigo (Indigofera tinctoria) on the productivity of rainfed lowland rice-based cropping systems: rice–tomato, rice–tobacco or soyabean, rice–maize, and rice–garlic. …”
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Targeted finance and the adoption of solar irrigation by smallholder and women farmers por Bhattarai, Dipendra, Fishman, Ram, Lamichhane, Nabina, Mukherji, Aditi

“…Here, we report findings from a field experiment (RCT) in 93 rural administrative units in Nepal that provides novel evidence on the barriers to adoption and how they can be overcome. …”
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Manure studies in the Ethiopian highlands. I. Effect on Medicago sativa L. grown on an alfisol por Saka, A.R., Haque, I.

“…An alfalfa field experiment was conducted at the Debre Zeit Experiment station for a period of 2 years with the main objective of investigating the effects of cattle manure om dry matter yields, plant tissue nutrient concentration and plant nutrient uptake. …”
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Measuring N uptake and transport in Pinus sylvestris to estimate mycorrhizal transfer efficiency : a tracer/fertilicer experiment in northern Sweden por Henriksson, Nils

“…In a large-scale field experiment, single trees in a Scots pine stand in Northern Sweden were subjected to different amounts of nitrate fertilizer containing the tracer isotope 15N. …”

Anlockning och gnag av snytbaggar (Hylobius sp.) : effekt av plantstorlek och behandling med metyljasmonat por Mitsell, Nils

“…These seedlings were then examined on 4 occasions, throughout the summer, for feeding scars caused by pine weevils. The second field experiment was conducted on a fresh clear cutting outside Forshaga in west central Sweden. …”

Deleterious influence of water logging on potato in warm climates por Ekanayake, I.J.

“…Water logging is a potential abiotic stress problem in the warm tropical potato growing areas, particularly in the lowland rice-based cropping systems. A field experiment was conducted in San Ramon, Peru during the rainy season to evaluate the effects of water logging on 12 clones (8 lowland tropical adapted clones and 4 highland adapted clones). …”
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Physiological evaluations of maize hybrids under low nitrogen por Abubakar, A.W., Manga, A.A., Kamara, A., Tofa, A.I.

“…Abstract A field experiment was conducted during 2014 and 2016 rainy season at Tudun Wada, Kano and Shika, Zaria in the Northern Guinea Savanna of Nigeria in order to study the physiological responses of maize hybrids under low nitrogen. …”
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Hiding or pleasing: Spousal disagreement among Ugandan maize farmers por Van Campenhout, Bjorn, Lecoutere, Els, Spielman, David J.

“…We first confirm that not all disagreement can be explained by measurement error or bias. Using a field experiment, we then test if disagreement is due to information asymmetry between male and female co-heads. …”
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Challenges to groundnut value chain development: Lessons from an (attempted) experiment in Ghana por Posey, Sean, Magnan, Nicholas, McCullough, Ellen B., Hoffmann, Vivian, Opoku, Nelson, Alidu, Abdul-Hafiz

“…With the intention of conducting a field experiment, we piloted an intervention connecting smallholder groundnut farmers in Ghana to a premium groundnut processor through aggregators. …”
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Marketing fortified rice: Effects of aspirational messaging and credibility of health claims por Chowdhury, Reajul, Crost, Benjamin, Hoffmann, Vivian

“…We test the individual and joint impacts of such messages through a field experiment eliciting willingness to pay for fortified rice in Chandpur District, Bangladesh. …”
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Enhancing adaptive capacity through climate-smart insurance: Theory and evidence from India por Kramer, Berber, Ceballos, Francisco

“…Specifically, in a field experiment in India, we test whether conditioning insurance payouts on not burning residues improves residue management as a CSA technology. …”
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Cooking contests for healthier recipes: Impacts on nutrition knowledge and behaviors in Bangladesh por Kramer, Berber

Materias: “…field experimentation…”
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Insurance structure, risk sharing, and investment decisions: An empirical investigation of the implications of individual and group weather index insurance por Munro, Laura

“…Experimental results from a framed field experiment in Gujarat, India, confirm that group pressure leads to an 8 percent reduction in risk taking in contexts with perfect information and group insurance (relative to individual insurance). …”
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