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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, NteranyaAbaidoo, 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]Onfarm evaluation of biological nitrogen fixation potential and grain yield of Lablab and two soybean varieties in the northern Guinea savanna of Nigeria

The Tropical Legumes II (TL II) project, funded by the Bill & Melinda Gates Foundation, aims to improve the lives and livelihoods of smallholder farmers in the drought-prone areas of Sub-Saharan Africa (SSA) and South Asia (SA) through improved productivity and production of six major tropical le...


Abate, Tsedeke[Four Seasons of Learning and Engaging Smallholder Farmers: Progress of Phase 1.]Four Seasons of Learning and Engaging Smallholder Farmers: Progress of Phase 1.

A study was conducted to identify the most suitable intercropping arrangement in smallholder farms in Western Kenya. Biomass and N (nitrogen)-accumulation, N2 fixation and grain yield of maize and soybeans grown as intercrops at three planting densities were assessed. The study was conducted in f...


Simbine, M.G.Baijukya, Frederick P.Onwonga, R.N.[Intermediate maturing soybean produce multiple benefits at 1:2 maize: soybean planting density]Intermediate maturing soybean produce multiple benefits at 1:2 maize: soybean planting density
Blair, Matthew W.Pantoja Delgado, WPedraza García, FabioCregan, P.B.Fatokun, C.A.[Legume microsatellites tested in common bean]Legume microsatellites tested in common bean
Autor: Akem, C.

More than 100 pathogens attack soybean, but only a third of them are of economic importance. Yield reduction varies between 10 % and 30 %. Soybean diseases are caused by viruses, bacteria, fungi, and nematodes. Disease management is based on several control principles that should be combined pref...


Akem, C.[Management of soybean diseases]Management of soybean diseases

The influence of soybean (Glycine max) planting date on seasonal epidemics of frogeye leaf spot caused by Cercospora sojina and on grain yield, was evaluated during the 1991 and 1992 cropping seasons. Two susceptible (Samsoy 1 and TGx 849-313D) and one resistant (TGx 996-26E) soybean cultivars we...


Akem, C.Dashiell, Kenton E.[Effect of planting date on severity of frogeye leaf spot and grain yield of soybeans]Effect of planting date on severity of frogeye leaf spot and grain yield of soybeans

The issue of soybean adoption in sub-saharan Africa is addressed. A survey was conducted of soybean (Glycine max (L.) Merr.) production and utilization in Gandajika, Zaire. Of 115 farmers sampled from nine villages, all cultivated soybean. Average production per farmer in the previous season was ...


Shannon, D.Kalala, M.[Adoption of soybeans in subSaharan Africa: a comparative analysis of production and utilization in Zaire and Nigeria]Adoption of soybeans in subSaharan Africa: a comparative analysis of production and utilization in Zaire and Nigeria

Soybean grain yields in sub-Saharan Africa have remained at approximately 50% below those attained in South America despite numerous efforts. A study was conducted in Siaya County (western Kenya) involving 107 farms with soils of different fertility status. The main objective was to test combinat...


Thuita, Moses N.Vanlauwe, BernardMutegi, E.Masso, C.[Reducing spatial variability of soybean response to rhizobia inoculants in farms of variable soil fertility in Siaya County of western Kenya]Reducing spatial variability of soybean response to rhizobia inoculants in farms of variable soil fertility in Siaya County of western Kenya

Soybean is a relatively new crop to most African smallholder farming communities. Cultivation is expanding rapidly because of its perceived potential to enhance soil fertility through biological nitrogen fixation and its source as food and cash. High N2, fixation in promiscuous soybean genotypes ...

Le soia qui est relativement une nou,relle spdculation pour la plupartdes communautes des petits expioitants d'Afrique, se d6velopperapidernent il cause de son potentiel connu d'augmentation de lafertilit€ des sols par la fixation biologique d'azote, dans l'alimentationet comme culture de rente. ...


Abaidoo, R.C.Sanginga, NteranyaOkogun, J.A.Kolawole, G.O.Tossah, B.K.Diels, J.[Genotypic variation of soybean for phosphorus use efficiency and their contribution of N and P to subsequent maize crops in three ecological zones of West Africa]Genotypic variation of soybean for phosphorus use efficiency and their contribution of N and P to subsequent maize crops in three ecological zones of West Africa

The objective of this study was to examine the determinants of technical efficiency (TE) of soybean production in the Guinea savannas. A stochastic frontier production function, using maximum likelihood estimation (MLE) technique was applied in the analysis of data collected in 2006 from a sample...


Amaza, P.Ogundari, K.[An investigation of factors that influence the technical efficiency of soybean production in the Guinea savannas of Nigeria]An investigation of factors that influence the technical efficiency of soybean production in the Guinea savannas of Nigeria

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