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Nitrogen (N) deficiency is a major constraint to the productivity of the African smallholder farming systems. Grain, green manure and forage legumes have the potential to improve the soil N fertility of smallholder farming systems through biological N2-fixation. The N2-fixation of bean (Phaseolus...


Ojiem, JOVanlauwe, BernardRidder, N.A. deGiller, Ken E.[Niche-based assessment of contributions of legumes to the nitrogen economy of Western Kenya smallholder farms]Niche-based assessment of contributions of legumes to the nitrogen economy of Western Kenya smallholder farms

The sub-humid zone of Central Kenya is water deficient due to regular intra-seasonal dry spells that constrain rain-fed crop production. A study was initiated to investigate the effects of minimum tillage and vegetative barriers on soil and water conservation and crop yield. There were two tillag...


Guto, SamuelRidder, N.A. deGiller, Ken E.Pypers, PieterVanlauwe, Bernard[Minimum tillage and vegetative barrier effects on crop yields in relation to soil water content in the Central Kenya highlands]Minimum tillage and vegetative barrier effects on crop yields in relation to soil water content in the Central Kenya highlands
Gutto, SNVanlauwe, BernardOkoth, Peter F.Pypers, PieterRidder, N.A. deGiller, Ken E.[To conserve or not to conserve: exploring smallholder farmers´ knowledge towards soil erosion and the status of conservation farming across the Central Kenya highlands]To conserve or not to conserve: exploring smallholder farmers´ knowledge towards soil erosion and the status of conservation farming across the Central Kenya highlands
Karanja, S.Herrero, Mario T.Ridder, N.A. deBaijukya, Frederick P.Mwale, MKaizzi, CKMapfumo, PaulWatat, CIssaka, R.Sanogo, OKungu, J.Mugendi, DNQuirós, CarlosTittonell, Pablo A.González Estrada, E.Giller, Ken E.[Income, food security, nutrients and labour: a comparison of key aspects of african smallholder farming systems using IMPACT]Income, food security, nutrients and labour: a comparison of key aspects of african smallholder farming systems using IMPACT

Production inefficiency is usually analyzed by economical efficiency, which is composed of two components-technical and allocative efficiencies. This study provided a direct measure of production efficiency of the smallholder milk producers in Kenya using a stochastic profit frontier and ineffici...


Karanja Ng'ang'a, StanleyKungu, J.Ridder, N.A. deHerrero, Mario T.[Profit efficiency among Kenyan smallholders milk producers: A case study of Meru-South district, Kenya]Profit efficiency among Kenyan smallholders milk producers: A case study of Meru-South district, Kenya
Ridder, N.A. deBenjamin, R.W.Keulen, H. van[Forage selection and performance of sheep grazing dry annual range]Forage selection and performance of sheep grazing dry annual range
Guiller, KETittonell, Pablo A.Rufino, Mariana C.Wijk, Mark T. vanZingore, ShamieMapfumo, PaulAdjei-Nsiah, SamuelHerrero, Mario T.Chikowo, RegisCorbeels, MarcRowe, ECBaijukya, Frederick P.Mwijage, ASmith, J.Yeboah, E.Burg, W.J. van derSanogo, O.M.Misiko, Michael T.Ridder, N.A. deKaranja, S.Kaizzi, CKungu, J.Mwale, MNwaga, DPacini, C.Vanlauwe, Bernard[Communicating complexity: integrated assessment of trade-offs concerning soil fertility management within African farming systems to support innovation and development]Communicating complexity: integrated assessment of trade-offs concerning soil fertility management within African farming systems to support innovation and development

Agricultural intensification of farming systems in sub-Saharan Africa is a prerequisite to alleviate rural poverty and improve livelihoods. Legumes have shown great potential to enhance system productivity. On-farm experiments were conducted in different agro-ecological zones (AEZ) in Western Ken...


Ojiem, J.O.Franke, A.C.Vanlauwe, BernardRidder, N.A. deGiller, Ken E.[Benefits of legumemaize rotations: assessing the impact of diversity on the productivity of smallholders in Western Kenya]Benefits of legumemaize rotations: assessing the impact of diversity on the productivity of smallholders in Western Kenya

Compares energy and crude protein balances of cattle in traditional and ranching systems in eastern Botswana. Considers animal gross energy produced per unit, productivity at different stocking rates, liveweight, biological efficiency and pasture degradation & drought. Shows calculations of gross...


Ridder, N.A. deWagenaar, K.T.[Energy and protein balances in traditional livestock systems and ranching in eastern Botswana]Energy and protein balances in traditional livestock systems and ranching in eastern Botswana
Karanja, S.Herrero, Mario T.Ridder, N.A. deBaijukya, Frederick P.Mwale, M.Kaizzi, C.Mapfumo, PaulWatat, C.Issaka, R.Sanogo, O.Kungu, J.Mugendi, D.Quirós, CarlosTittonell, Pablo A.González Estrada, E.Giller, Ken E.[Income, food security, nutrients and labour: a comparison of key aspects of African smallholder farming systems using IMPACT]Income, food security, nutrients and labour: a comparison of key aspects of African smallholder farming systems using IMPACT

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