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Okeyo, Jeremiah M.Norton, JayKoala, SaidouWaswa, Boaz S.Kihara, JobBationo, B. André[Impact of reduced tillage and crop residue management on soil properties and crop yields in a long-term trial in western Kenya]Impact of reduced tillage and crop residue management on soil properties and crop yields in a long-term trial in western Kenya

Etyang, T.B.Okello, J.J.Zingore, ShamieOkth, P.F.Mairura, Franklin S.Mureith, A.Waswa, Boaz S.[Exploring relevance of agro input dealers in disseminating and communicating of soil fertility management knowledge: The case of Siaya and Trans Nzoia counties, Kenya.]Exploring relevance of agro input dealers in disseminating and communicating of soil fertility management knowledge: The case of Siaya and Trans Nzoia counties, Kenya.

In southern Africa, soil nutrient reserves are being depleted because of continued nutrient mining without adequate replenishment. The consequent downward spiral of soil fertility has led to a corresponding decline in crop yields, food insecurity, food aid and environmental degradation. The centr...


Mafongoya, P.L.Bationo, B. AndréKihara, JobWaswa, Boaz S.[Appropriate technologies to replenish soil fertility in Southern Africa]Appropriate technologies to replenish soil fertility in Southern Africa

Crop production in sub-Sahara Africa is constrained by low soil phosphorus (P) content. A study was conducted in western Kenya to explore alternative P inputs and ways of optimizing their effectiveness and profitability. A field experiment established in 2007 studied the effects of Minjingu phosp...


Savini, IsaacKihara, JobKoala, SaidouMukalama, JohnWaswa, Boaz S.Bationo, B. André[Long-term effects of TSP and Minjingu phosphate rock applications on yield response of maize and soybean in a humid tropical maize–legume cropping system]Long-term effects of TSP and Minjingu phosphate rock applications on yield response of maize and soybean in a humid tropical maize–legume cropping system
Ndung'u-Magiroi, Keziah WairimuWaswa, Boaz S.Bationo, B. AndréOkalebo, John RobertOthieno, CalebHerrmann, LaetitiaLesueur, Didier[Minjingu phosphate rock applications increase the population of phosphate solubilising microorganisms with a positive impact on crop yields in a Kenyan Ferralsol]Minjingu phosphate rock applications increase the population of phosphate solubilising microorganisms with a positive impact on crop yields in a Kenyan Ferralsol

Many food production systems in sub-Saharan Africa are constrained by phosphorus (P). We hypothesized that within legume-cereal rotation systems: targeting P to the legume phase leads to higher system productivity, and that use of grain legumes leads to better economic returns than use of herbace...


Kihara, JobVanlauwe, BernardWaswa, Boaz S.Kimetu, J.M.Chianu, J.N.Bationo, B. André[Strategic phosphorus application in legume-cereal rotations increases land productivity and profitability in Western Kenya]Strategic phosphorus application in legume-cereal rotations increases land productivity and profitability in Western Kenya
Waswa, Boaz S.Vlek, Paul L.G.Tamene, LulsegedOkoth, Peter F.Mbakaya, DSZingore, Shamie[Evaluating indicators of land degradation in smallholder farming systems of western Kenya]Evaluating indicators of land degradation in smallholder farming systems of western Kenya

Sustainable intensification of African farming systems has been high on the agenda of research and development programs for decades. System innovations such as integrated soil fertility management (ISFM) and conservation agriculture have been proposed to tackle the complex challenges farmers face...


Adolwa, Ivan S.Schwarze, StefanWaswa, Boaz S.Buerkert, Andreas[Understanding system innovation adoption: A comparative analysis of integrated soil fertility management uptake in Tamale (Ghana) and Kakamega (Kenya)]Understanding system innovation adoption: A comparative analysis of integrated soil fertility management uptake in Tamale (Ghana) and Kakamega (Kenya)

Sub-Saharan Africa (SSA) is plagued by low productivity and little research is available on the attainable responses and profitability to applied nutrients under variable environments. The objective of this study was to determine the attainable maize grain response to and potential of profitabili...


Kihara, JobHuising, JeroenNziguheba, GeneroseWaswa, Boaz S.Njoroge, SKabambe, V.Iwuafor, E.Kibunja, C.N.Esilaba, Anthony O.Coulibaly, A[Maize response to macronutrients and potential for profitability in sub-Saharan Africa]Maize response to macronutrients and potential for profitability in sub-Saharan Africa

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