Resultados de búsqueda - "field experiment"

Agricultural extension messages using video on portable devices: Increase knowledge about seed selection and seed storage and handling among smallholder potato farmers in southwest... por Van Campenhout, Bjorn, Vandevelde, Senne, Walukano, Wilberforce, Van Asten, Piet

“…We test whether simple agricultural extension video messages delivered through Android tablets increase knowledge of recommended practices in seed selection, storage, and handling among a sample of potato farmers in southwestern Uganda. Using a field experiment with ex ante matching in a factorial design, we find that showing agricultural extension videos significantly affects farmers’ knowledge. …”
Enlace del recurso

Managing risk with insurance and savings: Experimental evidence for male and female farm managers in West Africa por Delavallade, Clara, Dizon, Felipe, Hill, Ruth Vargas, Petraud, Jean Paul

“…Using a randomized field experiment in Senegal and Burkina Faso, we compare male and female farmers who are offered index-based agricultural insurance with those who are offered a variety of savings instruments. …”
Enlace del recurso

To defer or differ: Experimental evidence on the role of cash transfers on Nigerian couples’ decision-making por Bakhtiar, M. Mehrab, Fafchamps, Marcel, Goldstein, Markus, Leonard, Kenneth L., Papineni, Sreelakshmi

“…We conduct an original lab-in-the-field experiment on the decision–making process of married couples over the allocation of rival and non-rival household goods. …”
Enlace del recurso

Assessment of post-harvest losses and carbon footprint in intensive lowland rice production in Myanmar por Gummert, Martin, Nguyen-Van-Hung, Cabardo, Christopher, Quilloy, Reianne, Aung, Yan Lin, Thant, Aung Myo, Kyaw, Myo Aung, Labios, Romeo, Htwe, Nyo Me, Singleton, Grant R.

“…Harvest and post-harvest losses were investigated in a field experiment with 5 replications per scenario. A comparative analysis on energy efficiency and cost-benefits was conducted for different practices of rice production from cultivation to milling. …”
Enlace del recurso

Effects of rate and frequency of applied p on crop yields, p uptake, and fertilizer p use-efficiency and its recovery in a groundnut-mustard rotation por Aulakh, M.S., PASRICHA, N.S.

“…A field experiment was conducted for 5 years (1992/93–1996/97) on Tolewal sandy loam soil (Typic Ustochrepts) in the subtropical region of northwest India (Ludhiana), to evaluate the effect of four rates of fertilizer P (0, 20, 30 and 40 kg P2O5/ha) applied at three frequencies representing direct, residual and cumulative P treatments on crop yields, P uptake, fertilizer P-use efficiency and fertilizer P recovery by groundnut (Arachis hypogaea) and mustard (Brassica napus) grown in a rotation.Groundnut responded to an application of P up to 20 kg P2O5/ha when the preceding mustard crop did not receive fertilizer P. …”
Enlace del recurso

Nondestructive estimation of shoot nitrogen in different rice genotypes por Ladha, Jagdish K., Tirol-Padre, Agnes, Punzalan, Gloria C., Castillo, E., Singh, Upendra, Reddy, C. Kesava

“…In two dry‐season and one wet‐season field experiment, shoot N of various genotypes at flowering were highly correlated (P < 0.05) with CLAT, the product of SPAD reading from a selected leaf (C), area of that leaf (LA), and number of tillers (T) (r2 = 0.46, 0.90, and 0.85 in Exp. 1, 2, and 3, respectively); and with LAT, the product of LA and T (r2 = 0.56, 0.88, and 0.76). …”
Enlace del recurso

Net Photosynthesis, Water Use Efficiency, Leaf Water Potential and Leaf Rolling As Affected By Water Deficit in Tropical Upland Rice por Dingkuhn, M., Cruz, R.T., O'Toole, J.C., D÷rffling, K.

“…A drought-susceptible semidwarf (IR20) and a drought-resistant traditional (Azucena) rice were grown in a dryland field experiment with sprinkler irrigation during the dry season in the Philippines. …”
Enlace del recurso

Evaluation of the agronomic and economic performances of integrated rice-fish systems in Mali por Akpoffo, Marius A, Guindo, Jonathan, Dossou-Yovo, E.R

“…To this end, a 2-year field experiment was conducted on 3 sites including Baguineda, Selingue and in Massala in 2023 and 2024. …”
Enlace del recurso

Does trust in the extension source improve learning outcomes? Experimental evidence from Southern Africa por Ngoma, Hambulo, Mulungu, Kelvin H., Manyanga, Mark, Simutowe, Esau, Mhlanga, Blessing, Nyagumbo, Isaiah, Chimonyo, Vimbayi G. P., Thierfelder, Christian

“…We use an artefactual field experiment that includes training on conservation agriculture to test whether trust in the source of extension advice enhances learning outcomes in Malawi, Zambia, and Zimbabwe. …”
Enlace del recurso

Determining optimal dose of chemical fertilizer on biofortified bean in Sud-Kivu highlands por Clerisse, C, Ghislain, H, Legrand, C

“…Following a split-plot design, a field experiment was carried out on CODMLB001 and HM21-7 varieties, in Kashusha (Kabare territory) in Sud-Kivu Highlands, after a strategic application of increasing doses of chemical fertilizer NPK 17-17-17 (D₀: Control; D₁: 50 kg ha^-1; D₂: 75 kg ha^-1; D₃: 100 kg ha^-1; D₄: 125 kg ha^-1 and D₅: 150 kg ha^-1). …”
Enlace del recurso

Confidence and information usage: Evidence from soil testing in India por Gars, Jared, Fishman, Ram, Kishore, Avinash, Rothler, Yoav, Ward, Patrick S.

“…We implemented a field experiment in Bihar, India to test whether plot-specific fertilizer recommendations affect farmers' fertilizer use. …”
Enlace del recurso

Carbon dioxide and nitrous oxide emissions from a typical sugarcane soil in the Cauca River Valley, Colombia por Valencia Molina, Manuel C., Chalco Vera, Jorge, Loaiza, Sandra, Trujillo, Catalina, Munera, Bryan, Castro Franco, Mauricio, Silva Parra, Amanda, Chirinda, Ngonidzashe, Munoz Arboleda, Fernando

“…For this purpose, a field experiment was established in a typic haplustert soil cropped with sugarcane. …”
Enlace del recurso

Production and consumption traits and the adoption of improved maize varieties: Evidence from seed sample packs and cooking demonstrations por Van Campenhout, Bjorn, Nabwire, Leocardia, Kramer, Berber, Trachtman, Carly, Abate, Gashaw T.

“…This study, conducted in eastern Uganda, employs a field experiment with two intervention arms to assess the relative importance of these factors in farmers’ decisions to adopt improved maize seed varieties. …”
Enlace del recurso

Effects of soil compaction by rolling on soil structure and development of maize in no-till and disc ploughing systems on a tropical alfisol por Kayombo, B., Lal, R.

“…A field experiment conducted over three consecutive rainy seasons during 1982–1983 investigated the effects of three levels of seedbed traffic, but with no subsequent traffic, on soil physical properties and growth of maize (Zea mays) using the no-tillage and disc ploughing systems of seedbed preparation. …”
Enlace del recurso

Signaling, screening, or sunk costs? Experimental evidence on how prices affect agricultural technology adoption in East Africa por Van Campenhout, Bjorn, Abate, Gashaw T., Colen, Liesbeth, Kramer, Berber

“…We test how these pricing mechanisms shape uptake, use, and subsequent adoption of recently released seed varieties of staple food crops, drawing on a field experiment with smallholder farmers in Uganda and Ethiopia. …”
Enlace del recurso

Synergistic effects of maize-pigeon pea intercropping and low-dose fertilization on fall armyworm control por Zanzana, K., Sinzogan, A., Tepa-Yotto, G., Dannon, E.A., Toffa, J., Modibo, K.A., Goergen, G., Tamo, M.

“…The aim of this study is to assess the synergy between maize-pigeon pea intercropping and low fertilization on FAW larval infestation, maize plant growth, natural enemy presence, and grain yield. A field experiment was conducted at IITA, Benin station using a complete randomized block design with three replicates. …”
Enlace del recurso

Effect of soil bunds on runoff, soil and nutrient losses, and crop yield in the central highlands of Ethiopia por Adimassu, Zenebe, Mekonnen, Kindu, Yirga, C., Kessler, A.

“…The effects of soil bunds on runoff, losses of soil and nutrients, and crop yield are rarely documented in the Central Highlands of Ethiopia. A field experiment was set up consisting of three treatments: (i) barley-cultivated land protected with graded soil bunds (Sb); (ii) fallow land (F); and (iii) barley-cultivated land without soil bund (Bc). …”
Enlace del recurso

Quantifying source and dynamics of acidic pollution in a coastal acid sulphate soil area por Phong, N.D., To Phuc Tuong, Phu, N.D., Nang, N.D., Hoanh, Chu Thai

“…This study involved a long-term (2001-2006), large-scale canal water quality monitoring network (87 locations) and a field experiment at nine sites to quantify the dynamic variability of acidic pollution and its source in a coastal area with ASS in the Mekong River Delta of Vietnam. …”
Enlace del recurso

Roots of Stylosanthes hamata create macropores in the compact layer of a sandy soil por Lesturgez, G., Possl, R., Hartmaan, C., Bourdon, Emmanuel, Noble, A.D., Ratana-Anupap, S.

“…The paper presents results of a field experiment designed to investigate the potential use of forage legume Stylosanthes hamata (stylo) to ameliorate the structure of a compact layer in sandy soils of Northeast Thailand. …”
Enlace del recurso

Nitrogen fertilizer equivalencies of organics of differing quality and optimum combination with organic nitrogen source in Central Kenya por Kimetu, J.M., Mugendi, DN, Palm, Cheryl A., Mutuo, PK, Gachengo, CN, Bationo, B. André

“…Although organic nutrient sources are available, information about their potential use is scanty. A field experiment was set up in the sub-humid highlands of Kenya to establish the chemical fertilizer equivalency values of different organic materials based on their quality. …”
Enlace del recurso