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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

Bationo, B. AndréVanlauwe, BernardKihara, JobKimetu, J.[Soil organic carbon dynamics, functions and management in West African agro-ecosystems]Soil organic carbon dynamics, functions and management in West African agro-ecosystems

Atmospheric biological nitrogen fixation (BNF) by cowpea (Vigna unguiculata) and groundnut (Arachis hypogea) was evaluated using a 2-year (2000–2001) experiment with different fertilizer treatments. The 15N isotopic dilution method with a nonfixing cowpea as test reference crop was used. The effe...


Bado, BVBationo, B. AndréCescas, MP[Assessment of cowpea and groundnut contributions to soil fertility and succeeding sorghum yields in the Guinean savannah zone of Burkina Faso (West Africa)]Assessment of cowpea and groundnut contributions to soil fertility and succeeding sorghum yields in the Guinean savannah zone of Burkina Faso (West Africa)

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

Soil nutrient depletion as a result of continuous cultivation of soils without adequate addition of external inputs is a major challenge in the highlands of Kenya. An experiment was set up in Meru South District, Kenya in 2000 to investigate the effects of different soil-incorporated organic (man...


Mucheru-Muna, M.Mugendi, DNKung'u, J.B.Mugwe, JBationo, B. André[Effects of organic and mineral fertilizer inputs on maize yield and soil chemical properties in a maize cropping systems in Meru South District, Kenya]Effects of organic and mineral fertilizer inputs on maize yield and soil chemical properties in a maize cropping systems in Meru South District, Kenya

Low soil fertility is a fundamental constraint to crop production in western Kenya. Although researchers have developed many soil fertility-improving technologies, the adoption of these technologies is low due to inadequate awareness of the technologies, poor access to requisite resources and uns...


Odendo, MOjiem, JBationo, B. AndréMudeheri, MA[On-farm evaluation and scaling-up of soil fertility management technologies in Western Kenya]On-farm evaluation and scaling-up of soil fertility management technologies in Western Kenya

An experiment was conducted in 1996 and 1997 in semi-arid Niger, to determine the influence of supplementation (no supplement, millet bran + simple superphosphate, or millet bran + simple superphosphate + blood meal) for cattle and mulching (0 or 3 t ha-1 of Aristida sieberiana straw) on soil fer...


Sangare, M.Fernández Rivera, S.Hiernaux, Pierre H.Y.Bationo, B. AndréPandey, V.S.[Influence of dry season supplementation for cattle on soil fertility and millet (Pennisetum glaucum L.) yield in a mixed crop/livestock production system of the Sahel]Influence of dry season supplementation for cattle on soil fertility and millet (Pennisetum glaucum L.) yield in a mixed crop/livestock production system of the Sahel

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

Microdosing, the point-source application of a reduced fertilizer rate within 10 days of sowing, has increased short-term crop yields across the Sahel and is being actively scaled up as an agronomic practice. However, there is no information on the long-term effects of the technique upon soil fer...


Adams, Alexis M.Gillespie, Adam W.Kar, GourangoKoala, SaidouOuattara, BadioriKimaro, Anthony A.Bationo, B. AndréAkponikpè, Pierre B.I.Schoenau, Jeff J.Peak, Derek[Long term effects of reduced fertilizer rates on millet yields and soil properties in the West-African Sahel]Long term effects of reduced fertilizer rates on millet yields and soil properties in the West-African Sahel
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

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