Resultados de búsqueda - "field experiment"

Seeing is believing? Evidence from an extension network experiment por Kondylis, Florence, Mueller, Valerie, Zhu, Siyao Jessica

“…Such a modality may fail to address informational inefficiencies and accountability issues. We run a field experiment to measure the impact of augmenting the CF model with a direct CF training on the diffusion of a new technology. …”
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Information networks among women and men and the demand for an agricultural technology in India por Magnan, Nicholas, Spielman, David J., Gulati, Kajal, Lybbert, Travis J.

“…We test for gender-specific network effects on demand for laser land leveling—a resource-conserving technology—using data from a field experiment that combines a Becker-DeGroot-Marschak (BDM) auction with a lottery.…”
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Leadership and the voluntary provision of public goods: Field evidence from Bolivia por Jack, B. Kelsey, Recalde, Maria P.

Materias: “…field experimentation…”
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Do buyers have bargaining power? Evidence from informal groundwater contracts por Yashodha

“…To understand the process of bargaining, a framed-field experiment is conducted with actual buyers and sellers in groundwater contracts. …”
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Flood-tolerant rice reduces yield variability and raises expected yield, differentially benefitting socially disadvantaged groups por Dar, Manzoor H., de Janvry, Alain, Emerick, Kyle, Raitzer, David, Sadoulet, Elisabeth

Materias: “…field experimentation…”
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An experimental approach to farmer valuation of African rice genetic resources por Tyack, N., Arouna, A., Aboudou, R., Ndjiondjop, M.N.

“…In this study, we use a Becker-DeGroot-Marschak mechanism to elicit the willingness-to-pay of rice farmers in Côte d'Ivoire for small amounts of African rice (Oryza glaberrima) landraces held by the genebank of the Rice Biodiversity Center for Africa, and for seed of newly developed ARICA rice varieties bred using genebank materials. Using a field experiment, we additionally investigate how randomized exposure to and experimentation with small amounts of African rice landrace seed or seed of advanced rice varieties developed by AfricaRice affect how smallholder rice farmers value these novel genetic resources. …”
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Miracle seeds: Biased expectations, complementary input use, and the dynamics of smallholder technology adoption por Miehe, Caroline, Nabwire, Leocardia, Sparrow, Robert, Spielman, David J., Van Campenhout, Bjorn

“…Farmers may fail to recognize the importance of these complements, leading to disappointing crop yields and outputs and, eventually, dis-adoption of the improved variety. Using a field experiment, we test an information intervention among smallholder maize farmers in eastern Uganda that points out these complementarities. …”
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Representation increases women's influence in climate deliberations: Evidence from community-managed forests in Malawi por Clayton, Amanda, Dulani, Boniface, Kosec, Katrina, Robinson, Amanda Lea

“…We run a lab-in-the-field experiment randomly varying the gender composition of six-member groups asked to deliberate on policies to combat local overharvesting. …”
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Nitrogen contribution of Leucaena/Rhizobium symbiosis to soil and a subsequent maize crop por Sanginga, N., Mulongoy, K., Ayanaba, A.

“…The nitrogen contribution from the shoot and root system of symbiotically grown leucaena was evaluated in a field experiment on an Alfisol at IITA in Southern Nigeria. …”
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Wheat growth as influenced by application of agroforestry-tree prunings in Ethiopian highlands por Anthofer, J., Hanson, Jean, Jutzi, S.C.

“…With the exception of Entada abyssinica, which performed well under field conditions, a similar ranking as in the pot trial was established in the field experiment, but at harvest differences were not as pronounced as in the pot trial. …”
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Shoot and root growth of two tropical grasses, Brachiaria ruziziensis and B. dictyoneura, as influenced by aluminium toxicity and phosphorus deficiency in a sandy loam oxisol of th... por Hausller, K, Rao, Idupulapati M., Schultze-Kraft, Rainer, Marschner, H

“…Phosphorus (P) deficiency and aluminium (Al) toxicity are widespread in Oxisols of the tropical savannas of eastern Colombia. A field experiment was conducted to determine the effect of Al toxicity and P deficiency on plant growth and nutrient uptake of two Brachiaria species. …”
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Groundwater monitoring and management: status and options in Pakistan por Bhatti, Muhammad Tousif, Anwar, Arif A., Aslam, Muhammad

“…The authors address this concern through a field experiment by utilizing capabilities of automatic recording instruments.…”
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Response of cassava and maize to fertilizer application, and a comparison of the factors affecting their growth during intercropping por Olasantan, F., Ezumah, H., Lucas, E.

“…A field experiment was conducted on a Paleustalf to examine the effect of fertilizer application and the possible yield limiting factors in a cassava-maize intercropping system. …”
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Genetic diversity in terapy bean (Phaseolus acutifolius) landraces grown in Botswana por Molosiwa, Odireleng O., Kgokong, S.B., Makwala, B., Gwafila, C., Ramokapane, M.G.

“…A field experiment was conducted at Department of Agricultural Research in Sebele in the 2012 to 2013 season using nine accessions that were sourced from the National Plant Genetic Resource Centre (NPGRC), Gaborone, Botswana. …”
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Agronomic performance of 4n x 2nderived plantain (Musa sp. AAB group) hybrids in a humid agroecological zone of Nigeria por Shaibu, A.A., Nwonuala, A.I., Tenkouano, A., Ogburia, M.N.

“…A field experiment was conducted on thirteen (13) Musa hybrids derived from 4n x 2n crosses, three (3) checks and two (2) plantain landraces to evaluate phenology, growth characteristics and yield performance in a humid agro ecological zone of Nigeria. …”
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Zebra mussels (Dreissena polymorpha) for assessing microbial contamination and antibiotic resistant bacteria in freshwaters por Bighiu, Maria Alexandra

“…The suitability of zebra mussels (Dreissena polymorpha) as biomonitoring organisms for faecal contamination of surface waters was examined in both laboratory and field experiments. In addition, the presence of antibiotic resistant bacteria was investigated. …”

Effects of phosphorus fertilizer and inoculation on yield and nutritive values of grain and haulm of selected grain legumes in mixed crop-livestock production system of Ethiopia por Belete, S

“…The study involved field experiment and household survey. For the field experiment, four grain legumes (faba bean, chickpea, haricot bean and soybean) were subjected to four fertilizer treatments (inoculation + P fertilizer (+P+I), inoculation alone (-P+I), P fertilization alone (+P-I) and control i.e. no inoculation and no fertilizer (-P-I)) on individual farmer plots. …”
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Etableringsmetodens påverkan på höstvetets skörd por Finnfors, Daniel

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Response of cactus pear (Opuntia ficus-indica Mill.) to boron and farmyard manure application under arid soils conditions in Kutch, Gujarat por Naorem, Anandkumar, Patel, Sachin, Hassan, Sawsan, Louhaichi, Mounir, Sarker, Ashutosh

“…To understand the plant growth response of Opuntia-ficus indica Mill. to inorganic fertilizers and organic manures, a field experiment was conducted with 12 treatment combinations, three levels of farmyard manure and four levels of boron and compared in a randomized complete block design with three replications over two years. …”
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Crop Yields under Climate Variability and No-Tillage System in Dry Areas of Morocco por Moussadek, Rachid, Laghrour, Malika, Mrabet, Rachid, Van Ranst, Eric

“…For this purpose, a field experiment under NT system has been installed since 2004 in the Zaer Plateau (Central Morocco) to study the adaptation of this system to the irregular rainfall compared to a conventional tillage (CT). …”
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