The role and importance of livestock in smallholder crop-livestock systems and the importance of crop residues (CR) as ruminant feedstuffs in such systems are well established. The effects of genotype (G), environment (E) and crop management (M) factors on yields of grain and CR and the nutritive...
Dejene, M.
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[Options for improving the yield and nutritive value of maize and grain legume residues for ruminants in East African farming systems]
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Options for improving the yield and nutritive value of maize and grain legume residues for ruminants in East African farming systems
A field study of cowpea, soybean and maize was made at Ibadan, Nigeria, to determine the uptake of mineral nutrients and quantities removed in crop residues and seed. Concentrations of N, the major cations (K, Ca, Mg and Na) and major anions (P, S and Cl), and the micronutrients (Fe, Mn, Zn and C...
Randall, P.J.
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Abaidoo, R.C.
,
Hocking, PJ
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Sanginga, Nteranya
,
[Mineral nutrient uptake and removal by cowpea, soybean and maize cultivars in West Africa, and implications for carbon cycle effects on soil acidification]
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Mineral nutrient uptake and removal by cowpea, soybean and maize cultivars in West Africa, and implications for carbon cycle effects on soil acidification
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.
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Mugendi, DN
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Palm, C.A.
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Mutuo, PK
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Gachengo, CN
,
Bationo, B. André
,
[Nitrogen fertilizer equivalencies of organics of differing quality and optimum combination with organic nitrogen source in Central Kenya]
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Nitrogen fertilizer equivalencies of organics of differing quality and optimum combination with organic nitrogen source in Central Kenya
Robbins, P.
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Bikande, F.
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Ferris, S.
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Kleih, U.
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Okoboi, G.
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Wandschneider, T.
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[Guide to collective marketing for smallscale farmers: ASARECA monograph, No. 8]
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Guide to collective marketing for smallscale farmers: ASARECA monograph, No. 8
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.
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Akinwale, R.O.
,
Ajala, S.O.
,
Menkir, A.
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Fakorede, M.A.B.
,
Oyekunle, M.
,
[Relationships among traits of tropical early maize cultivars in contrasting environments]
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Relationships among traits of tropical early maize cultivars in contrasting environments
El uso de cultivos forrajeros para corte y acarreo o para ensilar es una alternativa para reducir los efectos negativos de la época seca en la alimentación de animales en sistemas ganaderos doble propósito en el trópico seco. Por otra parte, el uso de abonos verdes de leguminosas es una alternati...
Castro, R.E.
,
Sierra, E.
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Mojica, J.E.
,
Carulla, Juan E.
,
Lascano, Carlos E.
,
[Efecto de especies y manejo de abonos verdes de leguminosas en la producción y calidad de un cultivo forrajero utilizado en sistemas ganaderos del trópico seco]
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Efecto de especies y manejo de abonos verdes de leguminosas en la producción y calidad de un cultivo forrajero utilizado en sistemas ganaderos del trópico seco
Identification of outstanding maize (Zea mays L.) hybrids for target environments is complicated by genotype × environment interactions. Thirty-two early-maturity maize hybrids were evaluated at eight locations in Nigeria and six locations in Ghana for 2 yr to (i) identify high-yielding, stable h...
Oyekunle, M.
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Haruna, A.
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Badu-Apraku, B.
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Usman, I.S.
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Mani, H.
,
Ado, S.G.
,
Olaoye, G.
,
Obeng-Antwi, K.
,
Abdulmalik, R.O.
,
Ahmed, H.O.
,
[Assessment of early-maturing maize hybrids and testing sites using GGE biplot analysis]
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Assessment of early-maturing maize hybrids and testing sites using GGE biplot analysis
Maize improvement at the International Institute of Tropical Agriculture (IITA), which began in the 1970s, built on the germplasm and experience of earlier years. The main breeding emphasis was to develop maize cultivars and hybrids with high yield potential and durable resistance to diseases and...
Kamara, A.Y.
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Menkir, A.
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Fakorede, M.A.B.
,
Ajala, S.O.
,
Badu-Apraku, B.
,
Kureh, I.
,
[Agronomic performance of maize cultivars representing three decades of breeding in the Guinea Savannas of West and Central Africa]
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Agronomic performance of maize cultivars representing three decades of breeding in the Guinea Savannas of West and Central Africa
Plant architecture and N fertilizer may limit the performance of intercropped maize (Zea mays L.) and cowpea [Vigna unguiculata (L.) Walpers] cultivars. This paper describes an experiment in which cultivars of maize and cowpea were intercropped and fertilized with varying rates of N. The cowpea c...
Ezumah, H.C.
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Nam, N.K.
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Walker, P.
,
[Maize-cowpea intercropping as affected by nitrogen fertilization]
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Maize-cowpea intercropping as affected by nitrogen fertilization