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Rachier, Gideon O.Wortmann, Charles S.Tenywa, J.S.[Low soil phosphorus tolerance in common bean as affected by root architecture]Low soil phosphorus tolerance in common bean as affected by root architecture
Rachier, Gideon O.Wortmann, Charles S.Tenywa, J.S.[Phosphorus tolerance in common bean as affected by root architecture]Phosphorus tolerance in common bean as affected by root architecture

Characteristics of the major soil groups found in bean-growing areas of Africa (Alfisols, Ultisols, Oxisols, Inceptisols) and associated nutritional disorders are discussed. Soil fertility factors affecting bean growth and N fixation, as evidenced in research conducted in Africa, are reviewed as ...


Mughogho, SKWortmann, Charles S.[Diagnosis of soil fertility constraints in bean based cropping systems: review of research results]Diagnosis of soil fertility constraints in bean based cropping systems: review of research results

Results of research work carried out in Africa on the response of beans to NPK fertilizers, liming, S and other secondary/micronutrients, and organic manures are reviewed. Band or spot placement of P, fertilizer management in multiple crop systems, and correlations between soil data, yields, and ...


Wortmann, Charles S.Zake, JYK[Review of bean responses to applied fertilizers in Africa]Review of bean responses to applied fertilizers in Africa

Root rot severely constrains bean (Phaseolus vulgaris L.) production in parts of Western Kenya. Genetic and soil management options were evaluated for an integrated root rot management approach. Four hundred genotypes were progressively screened in the field for resistance to root not over six se...


Otsyina, R.M.Ajanga, SIBuruchara, Robin A.Wortmann, Charles S.[Development of an integrated bean root rot control strategy for Western Kenya]Development of an integrated bean root rot control strategy for Western Kenya

Researchers worked with farmers in eastern Uganda to develop alternatives for soil management using crotalaria (Crotalaria ochroleuca), mucuna (Mucuna pruriens var. utilis), lablab (Dolichos lablab), and canavalia (Canavalia ensiformis) as green manures in short-term fallows. The participatory re...


Fischler, MAWortmann, Charles S.[Green manures for maize-bean systems in eastern Uganda: Agronomic performance and farmers' perceptions]Green manures for maize-bean systems in eastern Uganda: Agronomic performance and farmers' perceptions

Lantana camara L., Senna hirsuta (L.) Irwin & Barneby, Tithonia diversifolia (Hemsl.) A. Gray, and Aspilia kotschyi du Petit-Thouars occur naturally in eastern and central Uganda. Trimmings of these species were evaluated for effectiveness in improving soil productivity. The plant trimmings varie...


Kayuki, KCWortmann, Charles S.[Plant materials for soil fertility management in subhumid tropical areas]Plant materials for soil fertility management in subhumid tropical areas
Bekunda, Mateete A.Wortmann, Charles S.Bwamiki, D.P.Okwakol, M[Potentials and challenges of soil fertility management in the banana-based cropping systems of Eastern Africa]Potentials and challenges of soil fertility management in the banana-based cropping systems of Eastern Africa

Fallows improved with tree legumes have a potential role in soil fertility management in the sub-humid tropics. In addition to N2 fixation, deep rooting species can be used to redistribute leached nutrients to the topsoil while producing useful woody by-products. Such fallows are not very effecti...


Wortmann, Charles S.Kaizzi, CK[Tree legumes in medium-term fallows: Nitrogen, fixation, nitrate recovery and effects on subsequent crops]Tree legumes in medium-term fallows: Nitrogen, fixation, nitrate recovery and effects on subsequent crops

Bean ( Phaseolus vulgaris check for this species in other resources L.) production in Africa is constrained by edaphic stresses. A pan-African effort, Bean Improvement for Low Fertility in Africa (BILFA), was initiated in 1990 to screen beans for tolerance to several edaphic stresses. In the fir...


Wortmann, Charles S.Lunze, LOchwoh, VALynch, J[Bean improvement for low fertility soils in Africa]Bean improvement for low fertility soils in Africa

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