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Underlines the importance of adaptive research in ensuring the relevance of extension advice; the potential for the use of a broader range of communication methods within the formal extension system; and the need for extension agents to be accountable to the communities which they serve


Francis, P.A.Rawlins-Branan, M.J.[The extension system and small-scale farmers: A case study from northern Zambia]The extension system and small-scale farmers: A case study from northern Zambia

Detailed knowledge of the genetic diversity among maize (Zea mays L.) germplasm is useful for their systematic and efficient use in breeding programmes. Two multivariate techniques were used to characterize 77 landraces collected from southern Ghana and four Ghanaian improved varieties. The ...


Obeng-Antwi, K.Craufurd, Peter Q.Menkir, A.Ellis, R.H.Sallah, P.Y.K.[Phenotypic diversity in maize landraces in Ghana]Phenotypic diversity in maize landraces in Ghana

Acid soils severely reduce maize (Zea mays L.) yield in the tropics. Breeding for tolerance to soil acidity provides a permanent, environmentally friendly, and inexpensive solution to the problem. This study was carried out to determine the relative importance of additive, dominant, and epistatic...


Ceballos, H.Pandey, S.Narro Leon, LAPérez Velásquez, Juan Carlos[Additive, dominant, and epistatic effects for maize grain yield in acid and non-acid soils]Additive, dominant, and epistatic effects for maize grain yield in acid and non-acid soils

Decline in crop yields is a major problem facing smallholder farmers in Kenya and the entire Sub-Saharan region. This is attributed mainly to the mining of major nutrients due to continuous cropping without addition of adequate external nutrients. In most cases inorganic fertilizers are expensive...


Kimetu, J.M.Mugendi, DNPalm, C.A.Mutuo, PKGachengo, CNBationo, B. André[Nitrogen fertilizer equivalencies of organics of differing quality and optimum combination with organic nitrogen source in Central Kenya]Nitrogen fertilizer equivalencies of organics of differing quality and optimum combination with organic nitrogen source in Central Kenya

Secondary traits can improve precision with which drought or low soil nitrogen (low-N) tolerant maize (Zea mays L.) genotypes are identified, compared to measuring only grain yield under each stress. The objective of this study was to identify secondary traits for indirect selection for yield imp...


Badu-Apraku, B.Akinwale, R.O.Ajala, S.O.Menkir, A.Fakorede, M.A.B.Oyekunle, M.[Relationships among traits of tropical early maize cultivars in contrasting environments]Relationships among traits of tropical early maize cultivars in contrasting environments
Pasuquin, J.M.Saenong, S.Tan, P.S.Witt, ChristianFisher, Myles J.[Evaluating N management strategies for hybrid maize in Southeast Asia]Evaluating N management strategies for hybrid maize in Southeast Asia

A survey of the farmers in the semi-arid and humid areas of Los Altos de Jalisco, Mexico, was conducted to determine the constraints on bean yield in the area. Based on the information collected, the most important characteristics of the production systems of beans in monoculture and association ...

Con el fin de determinar los problemas que limitan el rendimiento del frijol en monocultivo y en asociacion con maiz, se encuestaron los agricultores de las regiones semiarida y humeda de los Altos de Jalisco, Mexico. Con base en la informacion recolectada se describen las caracteristicas mas imp...


Chavez C., J.R.Flores L., H.E.Aleman M., V.Mier C., R.Aceves R., J. de J.Ledesma G., L.A.Plascencia M., J.Lépiz Ildefonso, Rogelio[Avances del diagnostico de frijol en la zona de Los Altos de Jalisco, Mexico]Avances del diagnostico de frijol en la zona de Los Altos de Jalisco, Mexico
Mutegi, Edwin MwitiBiu Kung'u , JamesMucheru-Muna, M.Pieter, PypersMugendi, Daniel Njiru[Complementary effects of organic and mineral fertilizers on maize production in the smallholder farms of Meru South District, Kenya]Complementary effects of organic and mineral fertilizers on maize production in the smallholder farms of Meru South District, Kenya
Zhang, X.Pfeiffer, Wolfgang H.Palacios-Rojas, NBabu, R.Bouis, Howarth E.Wang, J.[Probability of success of breeding strategies for improving pro-vitamin A content in maize]Probability of success of breeding strategies for improving pro-vitamin A content in maize

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