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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
Wasike, V.W.Lesueur, DidierWachira, F.N.Mungai, NWMumera, LMSanginga, NteranyaMburugu, HNMugadi, DWango, PVanlauwe, Bernard[Genetic diversity of indigenous Bradyrhizobium nodulating promiscuous soybean [Glycine max (L) Merr.] varieties in Kenya: Impact of phosphorus and lime fertilization in two contrasting sites]Genetic diversity of indigenous Bradyrhizobium nodulating promiscuous soybean [Glycine max (L) Merr.] varieties in Kenya: Impact of phosphorus and lime fertilization in two contrasting sites

Information on the inter- and intra-specific variability in the acquisition and utilization of phosphorus (P) by promiscuous soybean genotypes under low-P conditions can be helpful in the short-term management of soil P availability. Thirteen promiscuous soybean genotypes were evaluated in a low-...


Nwoke, O.C.Okogun, JASanginga, NteranyaDiels, J.Abaidoo, R.C.Osonubi, O.[Phosphate rock utilization by soybean genotypes on a low-P savanna soil and the status of soil P fractions after a subsequent maize crop]Phosphate rock utilization by soybean genotypes on a low-P savanna soil and the status of soil P fractions after a subsequent maize crop
Chianu, J.N.Ohiokpehai, OVanlauwe, BernardOkoth, Peter F.Roing, KAdesina, A.A.Naidoo, POpondo, JSanginga, Nteranya[A model for promoting a versatile crop that has remained minor: the case of soybean in Kenya]A model for promoting a versatile crop that has remained minor: the case of soybean in Kenya

We conducted field experiments over 2 years on two acid soils of southern Cameroon to test whether efficient uptake and use of phosphorus (P) from less available sources by grain legume genotypes could benefit subsequent rotational maize. We grew two crops each year. For the first crop we grew 4 ...


Jemo, M.Abaidoo, R.C.Nolte, CTchienkoua, MSanginga, NteranyaHorst, Walter J.[Phosphorus benefits from grain-legume crops to subsequent maize grown on acid soils of southern Cameroon]Phosphorus benefits from grain-legume crops to subsequent maize grown on acid soils of southern Cameroon

In order to determine the improved soybean varieties that if recommended to the farmers would have a high probability of adoption, a farmer participatory approach was used to evaluate 12 soybean varieties at full podding in five locations (Oyani, Riana, Kasewe, Akiites, and Mabole) in western Ken...


Chianu, J.N.Vanlauwe, BernardMukulama, JAdesina, A.A.Sanginga, Nteranya[Farmer evaluation of improved soybean varieties being screened in five locations in Kenya : Implications for research and development]Farmer evaluation of improved soybean varieties being screened in five locations in Kenya : Implications for research and development

Two crop rotation cycles were evaluated to determine the effect of cropping systems and N fertilization on the yield and efficiency of N in maize. Maize was grown on plots which had previously supported monocrops of two genotypes each of soybean (TGx 1448-2E and SAMSOY-2) and cowpea (IT 96D-724 a...


Yusuf, A.A.Iwuafor, E.N.O.Abaidoo, R.C.Olufajo, O.O.Sanginga, Nteranya[Effect of crop rotation and nitrogen fertilization on yield and nitrogen efficiency in maize in the northern Guinea savanna of Nigeria]Effect of crop rotation and nitrogen fertilization on yield and nitrogen efficiency in maize in the northern Guinea savanna of Nigeria

Crop promotion is critical for market creation and rural growth in Africa. How to achieve this for crops, other than major staples (e.g., maize) and traditional export crops (e.g., tea), remains a problem since most African countries tend to focus policy attention to major staples and traditional...


Chianu, J.N.Ohiokpehai, OVanlauwe, BernardAdesina, A.A.Groot, Hugo deSanginga, Nteranya[Promoting a versatile but yet minor crop : Soybean in the farming systems of Kenya]Promoting a versatile but yet minor crop : Soybean in the farming systems of Kenya
Yusuf, A.A.Iwuafor, E.N.O.Abaidoo, R.C.Olufajo, O.O.Sanginga, Nteranya[Grain legume rotation benefits to maize in the northern Guinea savanna of Nigeria : Fixed-nitrogen versus other rotation effects]Grain legume rotation benefits to maize in the northern Guinea savanna of Nigeria : Fixed-nitrogen versus other rotation effects
Vanlauwe, BernardMukalama, JAbaidoo, R.C.Sanginga, Nteranya[Promiscuous soybean varieties, developed in West Africa, retain their promiscuity and dual-purpose nature under western Kenyan conditions]Promiscuous soybean varieties, developed in West Africa, retain their promiscuity and dual-purpose nature under western Kenyan conditions

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