Resultados de búsqueda - Random variables.

Group-based and citizen science on-farm variety selection approaches for bean growers in Central America por Occelli, Martina, Sellare, Jorge, Sousa, Kauê de, Dell’Acqua, Matteo, Mercado, Leida, Paredes, Saul, Robalino, Juan, Rosas, Juan Carlos, Etten, Jacob van

“…We use data from 1978 smallholder farmers from 140 villages, which were randomly assigned to tricot-PVS, group-PVS or control. …”
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Rainfall forecasts, learning subsidies and conservation agriculture adoption: Experimental evidence from Zambia por Ngoma, Hambulo, Simutowe, Esau, Silva, João Vasco, Nyagumbo, Isaiah, Kalala, Kelvin, Habeenzu, Mukwemba, Thierfelder, Christian

“…Future research can evaluate the persistence of such effects using randomized controlled trials.…”
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Application of rhizobacteria inoculants in biocontrol of Bacterial wilt (Ralstonia solanacearum) in potato (Solaum tuberosum) production. por Aguk, J., Schulte-Geldermann, Elmar, Karanja, K., Kinyua, Z.M., Jefwa, J.M., Parker, M.

“…It is difficult to control due to the large number of hosts, high genetic and phenotypic variability of the pathogen, systemic localization of the pathogen, and lack of chemical control. …”
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Genomic organization and expression profile of the mucin-associated surface protein (masp) family of the human pathogen Trypanosoma cruzi por Bartholomeu, D.C., Cerqueira, G.C., Leao, A.C.A., DaRocha, W.D., Pais, F.S., Macedo, C., Djikeng, Appolinaire, Teixeira, S.M.R., El-Sayed, N.M.

“…Masps are not randomly distributed throughout the genome but instead are clustered with genes encoding mucin and other surface protein families. …”
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Determinants and role of farmers’ seed and seedling multiplication in the SNNP Region seed system por Walelign, G.

“…Primary and secondary data were employed in this research mainly primary data were used from interview result of 60 randomly selected farmers from 2Kebeles of each indicated Woreda and totally 240 sample farmers. …”
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Risk factors for rotavirus infection in pigs in Busia and Teso subcounties, Western Kenya por Amimo, Joshua O., Otieno, T.F., Okoth, Edward A., Onono, J.O., Bett, Bernard K.

“…The data included records from 239 randomly selected piglets aged between 1 and 6 months raised in free range and backyard production systems. …”
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Productivity and profitability of manual and mechanized conservation agriculture (CA) systems in eastern Zambia por Mupangwa, W., Mutenje, M., Thierfelder, Christian L., Mwila, M., Malumo, H., Mujeyi, A., Setimela, Peter

“…Climate variability and declining soil fertility pose a major threat to sustainable agronomic and economic growth in Zambia. …”
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Use of climate forecast information to manage lowland rice-based cropping systems in Jakenan, Central Java, Indonesia por Dewi, E.R., Whitbread, Anthony M.

“…A total of 100 farmers were selected randomly based on a list of farmers available in each village. …”
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AMMI analysis of cassava response to contrasting environments: case study of genotype by environment effect on pests and diseases, root yield, and carotenoids content in Cameroon por Hanna, R., Kulakow, Peter A., Parkes, Elizabeth Y., Iluebbey, Peter O., Ngome, F.A., Suh, C., Massussi, J., Choutnji, I., Wirnkar, V.L.

“…Soil nutrient content was analyzed and trials were established in a randomized complete block design in three replications. …”
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Selecting for food-feed traits in desi and kabuli genotypes of Chickpea (Cicer arietinum) por Wamatu, Jane, Alemu, Tena, Tolera, Adugna, Beyan, Mohammed, Alkhtib, Ashraf, Eshete, Million, Ahmed, Seid, Rischkowsky, Barbara A.

“…The study explored the genetic and environmental variability in chickpea for food-feed traits.Seventy nine genotypes of 17 early-maturing desi genotypes, 19 early-maturing kabuli genotypes and 43 latematuring kabuli genotypes were evaluated for food-feed traits in 7 trials laid out in a randomized complete block design in 3 locations in Ethiopia.All trials showed wide genotypic ranges in various traits related to grain yield, straw yield and straw quality.Analysis of variance for individual trials showed significant (P<0.05)effects of genotype, location and their interaction on grain and straw yields, CP, IVOMD and NDF in all populations.Correlation analysis exhibited either positive or insignificant correlations with straw yield in all trials.The correlation between IVOMD and grain yield was insignificant in all trials.Grain yield correlated significantly (P<0.001) and positively to NDF in early maturing kabuli, however, the correlation was moderate (r= 0.396).Grain yield correlated either weakly or insignificantly to CP and Ca in the trials.The correlation between P and grain yield was ignored as the straw content of P was very small in all genotypes (<1.78 g/kg).Weak or absence of correlations between grain yields with straw traits would enable chickpea breeders to manipulate grain yield and straw traits independently.This presents an opportunity to identify parental genotypes for improving grain yield and straw traits for individual locations.…”
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Recovery of Nonpathogenic Mutant Bacteria from Tumors Caused by Several Agrobacterium tumefaciens Strains: a Frequent Event? por Llop, Pablo, Murillo, Jesús, Lastra, Beatriz, López, María M.

“…We performed a screening of the agrobacteria present inside the tumors, looking for nonpathogenic strains, and found a high variability of those strains in this niche. To verify the origin of the putative nonpathogenic mutant bacteria, we applied an efficient, reproducible, and specific randomly amplified polymorphic DNA analysis method. …”
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Metabolic Profile of F1 Holstein × Zebu Lactating Dairy Cows Under Grazing Supplemented with Two Non-Protein Nitrogen Sources por Mora Luna, Robert Emilio, Herrera Angulo, Ana María, Eslava Tovar, José Fernando, Isea Chávez, Juan Carlos, Enrique Darghan, Aquiles

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Efecto de los cultivos de cobertura otoño invernales, sobre el rendimiento y acumulación de N en maíz en el Sudoeste Bonaerense por De Sa Pereira, Eduardo, Galantini, Juan Alberto, Quiroga, Alberto Raul, Landriscini, María Rosa

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Definición de dosis de nitrógeno, fósforo y potasio para una máxima producción del maíz híbrido Advanta 9313 mediante el diseño central compuesto por Gavilánez Luna, Freddy Carlos, Gómez Vargas, María José

“…Faced with this situation, this trial was developed with an incomplete second-order factorial arrangement called central compound design (DCC), in order to identify macro-nutrient intervals for greater corn production. A randomized complete block distribution was used in which 15 formulations (treatments) of N-P-K were tested with three repetitions of each one and the dry grain yield was evaluated as a response variable. …”
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Using Apsim-Model as a decision-support-tool for long-term integrated-nitrogen-management and maize productivity under semi-arid conditions in Kenya por Kisaka, M. Oscar, Mucheru-Muna, M., Ngetich, Felix K., Mugwe, J.N., Mugendi, D.N., Mairura, Franklin S., Muriuki, J.

“…APSIM was parameterized and calibrated based on a rain-fed randomized complete block trial (2009–2012) at a research station in Machang’a, Embu County. …”
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Agronomic performance and fruit nutritional quality of an Andean tomato collection por Asprelli, Pablo Diego, Sance, Maria Mirta, Insani, Ester Marina, Asís, Ramón, Valle, Estela Marta, Carrari, Fernando, Galmarini, Claudio Romulo, Peralta, Iris Edith

“…Tomato plants were grown at the Experimental Station La Consulta INTA using a randomized block design. Analyses were performed on mature red fruit. …”
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Native microbial consortia: A sustainable strategy for improving the quality of forest seedlings in the Peruvian Amazon por Amaringo Cordova, Luiz Paulo, Mori Montero, Cesar, Padilla Castro, Cesar Franco, Ocaña Reyes, Jimmy A., Riveros Lizana, Christian Alonso, Camacho Villalobos, Alina Alexandra, Solórzano Acosta, Richard Andi

“…This study aimed to find the optimal dose of a native microbial consortium (NMC), which enhances seedling quality indicators, in three forest species at nursery phase. A completely randomized design (3 × 5) was used. Factor 1: Bolaina blanca (Guazuma crinita Mart.), Capirona (Calycophyllum spruceanum Benth. …”
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Morphological response of native maize (Zea mays L.) seedlings to contrasting nitrogen environments por Reyes Matamoros, Jenaro, Mora Ramírez, Marco Antonio, Morales Manzo, Ivan Ilich, Valderrama Romero, Antonio Salomón

“…The design was a completely randomized factorial arrangement of 4 x 2, involving four maize cultivars and two nitrogen levels. …”
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Impact of interstock and rootstock on the growth and productivity of mango (Mangifera indica L.) cultivar Kent in the San Lorenzo valley, Peru por Casas Niño, Sebastián, Vilchez Navarro, Sandy Graciela, Morocho Romero, Henry Hoseph, Cárdenas Huamán, Gabriela, Nuñez Ticliahuanca, Esdwin Oberti, Montañez Artica, Ana Gabriela, Velarde Apaza, Leslie Diana, Ramirez Rojas, Max, Rojas Llanque, Juan Carlos, Lozano Isla, Flavio

“…Tree performance was assessed after 10 years during the 2017–2019 growing seasons in Piura, Peru, under a randomized complete block design (2 × 4 factorial). …”
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Characterization of vineyard training systems based on remote sensing and crop indices por Capraro, Flavio, Pacheco, Daniela, Campillo, Pedro

“…The vineyard was divided into three blocks (replicates), and within each block, three training systems were randomly implemented: Free Cordon, Minimal Pruning and Box Pruning. …”
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