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, PJ
,
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
Several legumes with high biological nitrogen fixation (BNF) potentials have been studied in on-station trials. The processes involved in BNF and the benefits of these species to crop production need to be evaluated using farmers' management practices in farmers' fields. An on-farm trial with 20 ...
Okogun, J.
,
Sanginga, Nteranya
,
Abaidoo, R.C.
,
Dashiell, Kenton E.
,
Diels, J.
,
[Onfarm evaluation of biological nitrogen fixation potential and grain yield of Lablab and two soybean varieties in the northern Guinea savanna of Nigeria]
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Onfarm evaluation of biological nitrogen fixation potential and grain yield of Lablab and two soybean varieties in the northern Guinea savanna of Nigeria
Wasike, V.W.
,
Lesueur, Didier
,
Wachira, F.N.
,
Mungai, NW
,
Mumera, LM
,
Sanginga, Nteranya
,
Mburugu, HN
,
Mugadi, D
,
Wango, P
,
Vanlauwe, 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]
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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
Freely nodulating soybean genotypes vary in their phosphorus (P) uptake and P-use efficiency (PUE) in low-P soils. Understanding the genetic basis of these genotypes’ performance is essential for effective breeding. To study the inheritance of PUE, we conducted crosses using two high-PUE genotype...
Uzokwe, Veronica N.E.
,
Asafo-Adjei, B.
,
Fawole, B.
,
Abaidoo, R.C.
,
Odeh, I.
,
Ojo, D.K.
,
Dashiell, Kenton E.
,
Sanginga, Nteranya
,
[Generation mean analysis of phosphorus-use efficiency in freely nodulating soybean crosses grown in low-phosphorus soil]
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Generation mean analysis of phosphorus-use efficiency in freely nodulating soybean crosses grown in low-phosphorus soil
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, JA
,
Sanginga, Nteranya
,
Diels, 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]
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Phosphate rock utilization by soybean genotypes on a low-P savanna soil and the status of soil P fractions after a subsequent maize crop
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, C
,
Tchienkoua, M
,
Sanginga, Nteranya
,
Horst, Walter J.
,
[Phosphorus benefits from grain-legume crops to subsequent maize grown on acid soils of southern Cameroon]
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Phosphorus benefits from grain-legume crops to subsequent maize grown on acid soils of southern Cameroon
Nitrogen (N) has been gradually depleted from West African soils and now poses serious threats to food production. Many ways of increasing N supply (e.g. judicious use of inorganic fertilizers and nitrogen-fixing plants) have been tried in West African farming systems. Herbaceous and woody legume...
Sanginga, Nteranya
,
[Role of biological nitrogen fixation in legume based cropping systems: A case study of West Africa farming systems]
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Role of biological nitrogen fixation in legume based cropping systems: A case study of West Africa farming systems
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, Bernard
,
Mukulama, J
,
Adesina, A.A.
,
Sanginga, Nteranya
,
[Farmer evaluation of improved soybean varieties being screened in five locations in Kenya : Implications for research and development]
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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]
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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, O
,
Vanlauwe, Bernard
,
Adesina, A.A.
,
Groot, Hugo de
,
Sanginga, Nteranya
,
[Promoting a versatile but yet minor crop : Soybean in the farming systems of Kenya]
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Promoting a versatile but yet minor crop : Soybean in the farming systems of Kenya