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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.Abaidoo, R.C.Hocking, PJSanginga, Nteranya[Mineral nutrient uptake and removal by cowpea, soybean and maize cultivars in West Africa, and implications for carbon cycle effects on soil acidification]Mineral nutrient uptake and removal by cowpea, soybean and maize cultivars in West Africa, and implications for carbon cycle effects on soil acidification

A large proportion of total P in the soils of the area is unavailable to plants and consequently P is the second most limiting nutrient. The labile and moderately labile phosphorus fractions and adsorption characteristics of surface and subsurface horizons of eleven soil profiles in the derived s...


Nwoke, O.C.Vanlauwe, BernardDiels, J.Sanginga, N.Osonubi, O.Merckx, R.[Assessment of labile phosphorus fractions and adsorption characteristics in relation to soil properties of West African savanna soils]Assessment of labile phosphorus fractions and adsorption characteristics in relation to soil properties of West African savanna soils
Rodríguez Torres, Isaura VivianaFlores, AJSchultze-Kraft, Rainer[Agronomic potential of Centrosema pubescens in well drained savannas of Anzoátegui state, Venezuela = Potencial agronómico de Centrosema pubescens en condiciones de sabana bien drenada del estado Anzoátegui, Venezuela]Agronomic potential of Centrosema pubescens in well drained savannas of Anzoátegui state, Venezuela = Potencial agronómico de Centrosema pubescens en condiciones de sabana bien drenada del estado Anzoátegui, Venezuela

Striga hermonthica (L) Moench, a parasitic weed species, is a major constraint to sorghum production in the savanna zones of north-eastern Nigeria. The aim of this study was to assess the influence of farmer practices on Striga infestation of sorghum fields in the region. Random sampling techniqu...


Dugje, I.Y.Kamara, A.Y.Omoigui, L.O.[Assessment of farmers' crop management practices influencing Striga hermonthiea infestation and grain yield of sorghum (Sorghum hieolor)]Assessment of farmers' crop management practices influencing Striga hermonthiea infestation and grain yield of sorghum (Sorghum hieolor)
Iglesias F., Carlos ArielÁlvarez, Elizabeth[Potencial de producción y uso de la yuca en los Llanos Orientales de Colombia]Potencial de producción y uso de la yuca en los Llanos Orientales de Colombia
Zeigler, Robert S.Sarkarung, SurapongSanz, José IgnacioMolina López, Diego Luis[Upland rice germplasm development and production system research at the International Centre for Tropical Agriculture]Upland rice germplasm development and production system research at the International Centre for Tropical Agriculture

The attitudes of farmers towards risks influence their decision to invest into farming. Understanding the factors that influence these attitudes is important for crop development. This paper uses a combination of Ridge and Tobit regression analyses to determine the factors influencing risk aversi...


Olarinde, L.O.Manyong, Victor M.Akintola, J.O.[Factors influencing risk aversion among maize farmers in the Northern Guinea Savanna of Nigeria: implications for sustainable crop development programmes]Factors influencing risk aversion among maize farmers in the Northern Guinea Savanna of Nigeria: implications for sustainable crop development programmes

It has been difficult to explain the rotation effect based solely on N availability in maize-soybean cropping systems in the moist savanna zone of sub-Saharan Africa. Although arbuscular mycorrhizal fungi (AMF) can contribute to plant growth by reducing stresses resulting from other nutrient defi...


Sanginga, N.Carsky, R.J.Dashiell, Kenton E.[Arbuscular mycorrhizal fungi (AMF) respond to rhizobial inoculation and cropping systems in farmers fields in the Guinea savanna]Arbuscular mycorrhizal fungi (AMF) respond to rhizobial inoculation and cropping systems in farmers fields in the Guinea savanna

Field trials were conducted in 2005 and 2006 in Tilla (northern Guinea savanna) and Sabon-Gari (Sudan savanna) in northeast Nigeria to determine the performance of two improved cowpea varieties when relay-intercropped with early and late maize, 6 and 8 weeks after planting the maize. Grain yield,...


Kamara, A.Y.Omoigui, L.O.Ewansiha, S.U.Ekeleme, F.Chikoye, D.Ajeigbe, Hakeem A.[Performance of semideterminate and indeterminate cowpeas relaycropped into maize in Northeast Nigeria]Performance of semideterminate and indeterminate cowpeas relaycropped into maize in Northeast Nigeria

Striga hermonthica is a serious threat to cereal production in the savannas of sub-Saharan Africa. Field trials were conducted in Nigeria at Abuja and Mokwa (southern Guinea savanna) in 2005 and 2006, and at Zaria (northern Guinea savanna) and Sabongari (Sudan savanna) in 2006, to evaluate the pe...


Chikoye, D.Fontem, L.A.Menkir, A.[Seed coating herbicide tolerant maize hybrids with imazapyr for Striga hermonthica (Del.) Benth control in the West African savanna]Seed coating herbicide tolerant maize hybrids with imazapyr for Striga hermonthica (Del.) Benth control in the West African savanna

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