Resultados de búsqueda - Random variables.

Screen house and field resistance of taro cultivars to taro leaf blight disease (Phytophtora colocasiae) por Fokunang, C.N., Mbong, G., Manju, E., Tembe-Fokunang, E.A., Hanna, R.

“…There was variability in pathogenicity based on the small lesion lengths produced on cultivars, these included BL/SM132 and Red petiole. …”
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Digital extension, price risk, and farm performance: experimental evidence from Nigeria por Oyinbo, O., Chamberlin, Jordan, Abdoulaye, Tahirou, Maertens, M.

“…We analyze the impact of farmers' access to site-specific nutrient management recommendations and to information on expected returns, provided through a digital decision support tool, for maize production. We implement a randomized controlled trial among smallholders in the maize belt of northern Nigeria. …”
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Marketing of Kabuli and Desi chickpeas by smallholder farmers in Eastern Shewa Zone por Demissie, M.

“…It investigated the socio-economic, demographic, and institutional factors and other marketing attributes that affect farm gate-prices, season price fluctuations and marketable surplus of chickpeas in the study areas. A sample of 700 randomly selected households was interviewed using a structured questionnaire. …”
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Livestock water productivity in the Blue Nile Basin: assessment of farm scale heterogeneity por Haileslassie, Amare, Peden, Donald G., Gebreselassie, S., Amede, Tilahun, Wagnew, A., Taddesse, G.

“…We randomly selected 180 farm households. The sizes of the samples, in each system, were proportional to the respective system’s area. …”
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Phenotypic characterization and genetic diversity of sweet corn inbred lines por Somanatha, Patil, Ayyanagouda, Kuchanur, Prakash, B. Kisan, Yeri, Sharanabasappa B, Vinayan, Madhumal Thayil, Zaidi, Pervez H.

“…The sweet corn inbred lines were evaluated in a randomized complete block design with two replications. …”
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Towards gender-informed adaptation planning in the Sudanian zone of Mali Analysis of climate change vulnerability por Magassa, Mariame, Partey, Samuel T., Houessionon, Prosper, Dembélé, Siaka, Ouédraogo, Mathieu, Zougmoré, Robert B.

“…The questionnaires were randomly administered to 233 household heads (23% women). …”
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Gene content and distribution in the nuclear genome of Fragaria vesca por Pontaroli, Ana Clara, Rogers, Rebekah L., Qian, Zhang, Shields, Melanie E., Davis, Thomas M., Folta, Kevin M., SanMiguel, Phillip, Bennetzen, Jeffrey L.

“…Thirty fosmids were randomly selected from a library of Fragaria vesca subsp. americana (cv. …”
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Factors affecting farmers’ coping and adaptation strategies to perceived trends of declining rainfall and crop productivity in the central Rift valley of Ethiopia por Adimassu, Zenebe, Kessler, A.

“…A survey was conducted among 240 randomly selected farmers within six kebeles in the CRV using structured and pretested questionnaires. …”
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Enhancing productivity and livelihoods among smallholder irrigators through biochar and fertilizer amendments [Abstract only] por Jenkins, M., Souvanhnachit, M., Rattanavong, S., Maokhamphiou, B., Sotoukee, T., Pavelic, Paul, Sarkis, M., Downs, T.

“…Climate change and climate variability pose significant risks to smallholders in the rainfed lowlands of Lao PDR. …”
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Detection of infectious bronchitis virus 793B, avian metapneumovirus, Mycoplasma gallisepticum and Mycoplasma synoviae in poultry in Ethiopia por Hutton, S., Bettridge, Judy M., Christley, Robert M., Habte, T., Ganapathy, K.

“…Oropharyngeal swabs were collected from 117 randomly selected birds, and blood was taken from a subset of 73 of these birds. …”
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Evaluation of Replacing Wheat Bran with Ensete Ventricosum Corm on Feed Intake, Weight Gain, in vitro Digestibility and Economic Efficiency of Doyogena Sheep por Abebe, Mulatu

“…Forty-two Doyogena yearling rams with an initial body weight of 28.95kg (mean±SE) were randomly divided into six feeding groups of seven animals per treatment in a completely randomized block design. …”
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The diversity of rural livelihoods and their influence on soil fertility in agricultural systems of East Africa – A typology of smallholder farms por Tittonell, Pablo A., Muriuki, A., Shepherd, Keith D., Mugendi, D., Kaizzi, K.C., Okeyo, J., Verchot, Louis V., Coe, R., Vanlauwe, Bernard

“…This paper proposes a categorisation of household diversity based on a functional typology of livelihood strategies, and analyses the influence of such diversity on current soil fertility status and spatial variability on a sample of 250 randomly selected farms from six districts of Kenya and Uganda. …”
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Genetic parameters and gain from selection in sweet potato genotypes with high beta-carotene content por Otoboni, M.E.F., Oliveira, D.J.L.S.F. de, Vargas, P.F., Pavan, B.E., Andrade, M.I.

“…The experiment was conducted in a randomized block design, with three plants per plot and two replications, consisting of 255 sweet potato genotypes and a commercial cultivar (256 treatments). …”
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An investigation of the effects of PICSA on smallholder farmers’ decision-making and livelihoods when implemented at large scale – The case of Northern Ghana por Clarkson, Graham, Dorward, Peter, Osbahr, Henny, Torgbor, Francis, Kankam-Boadu, Isaac

“…PICSA involves trained field staff or community volunteers working with groups of farmers and includes farmers: using both historical climate information and forecasts; exploring practical options to address challenges and; using participatory decision making tools to evaluate and plan options for individual farm contexts. A survey of randomly selected farmers and detailed case studies was used in Northern Ghana to investigate the influence of PICSA on farmer’s decision-making, livelihoods, and innovation behaviours. …”
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Simultaneous adoption of integrated soil fertility management technologies in the Chinyanja Triangle, Southern Africa por Mponela, Powell, Kassie, Girma T., Tamene, Lulseged D.

“…Input/output market access, access to information, financial sources, and climate variability also play pivotal role in technology adoption. …”
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Parsimonious genotype by environment interaction covariance models for cassava (Manihot esculenta) por Bakare, M.A., Kayondo, S.I., Aghogho, C.I., Wolfe, M., Parkes, Elizabeth Y., Kulakow, Peter A., Egesi, Chiedozie N., Jannink, Jean-Luc, Rabbi, I.Y.

“…This study used the data from variety trials established as randomized complete block design (RCBD) in three replicates across 11 locations in different agro-ecological zones in Nigeria over four cropping seasons (2016–2017, 2017–2018, 2018–2019, and 2019–2020). …”
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Conservation agriculture can enhance maize productivity in high-rainfall regions: Nine-year evidence from Northern Zambia por Mhlanga, Blessing, Kalala, Kelvin, Thierfelder, Christian

“…This nine-year study in Northern Zambia evaluated the effects of cropping systems and rainfall variability on maize productivity, soil pH, and soil organic carbon (SOC) using a randomized complete block design. …”
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Profitability of cassava production: comparing the actual and potential returns on investment among smallholders in southern Nigeria por Ojiako, I.A., Tarawali, G., Okechukwu, R.U., Chianu, J., Ezedinma, C.I., Edet, M.

“…The study was carried out using a sample of ninety-six farmers randomly selected from the eight states that participated in the project. …”
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Supplementation of Menz ewes with dried leaves of Lablab purpureus or graded levels of Leucaena pallida 14203 and Sesbania sesban 1198: Effects on feed intake, live weight gain and... por Melaku, S., Peters, Kurt J., Tegegne, Azage

“…Seventy individually penned Menz ewes with a mean initial weight of 14.77+/-0.32kg (mean+/-S.D.) were randomly assigned to seven treatments in a randomized block design. …”
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Agronomic behaviour and chemical composition of three varieties of Pennisetum sp in the Peruvian Tropics por Watanabe Escobedo, Enrique Susumu, Juancho Ramirez, Ronald, Alvarado Atanacio, Carlos Enrique, López Rengifo, Debora, Injante Silva, Pedro Hugo, Ampuero Trigoso, Gustavo, Saucedo Uriarte, José Américo

“…Thirty-six subplots were installed, and treatments were randomly assigned, using vegetative seed with three buds each. …”
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