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Crop production in sub-Saharan Africa has numerous biotic and abiotic constraints, including nutrient deficiencies. Information on crop response to macronutrients is relatively abundant compared with secondary and micronutrients (SMN). Data from 1339 trial replicates of 280 field trials conducted...


Wortmann, Charles S.Kaizzi, K.C.Maman, N.Cyamweshi, A.Dicko, M.Garba, M.Milner, M.Senkoro, C.Tarfa, B.Tettah, F.Kibunja, C.Muntholi, M.Nalivata, P.Nkonde, D.Nabahungu, L.Ouattara, K.Serme, I.[Diagnosis of crop secondary and micro-nutrient deficiencies in sub-Saharan Africa]Diagnosis of crop secondary and micro-nutrient deficiencies in sub-Saharan Africa
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
Ochwoh, Víctor A.Wortmann, Charles S.Lynch, Jonathan P.[Bean improvement for low fertility in Africa (BILFA): IV. Manganese toxicity]Bean improvement for low fertility in Africa (BILFA): IV. Manganese toxicity
Lunze, LubangaWortmann, Charles S.Lynch, Jonathan P.[Bean improvement for low fertility in Africa (BILFA): III. Aluminum toxicity]Bean improvement for low fertility in Africa (BILFA): III. Aluminum toxicity

Management of harvested (senescent) banana pseudostems has implications for efficiency of nutrient use for sole cropped as well as intercropped bananas. Two studies were conducted on aspects of nutrient flows from senescent pseudostems. Sixty one and 55% of the initial N and P, respectively, in s...


Wortmann, Charles S.Karamura, E.B.Gold, C.[Nutrient flows from harvested banana pseudostems]Nutrient flows from harvested banana pseudostems

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

The potential of Crotalaria ochroleuca check for this species in other resources as a green manure crop was evaluated in a series of on-station and on-farm trials on reddish kaolinitic loam and sandy clay loam soils in Uganda. Production of the green manure by intercropping Crotalaria with eithe...


Wortmann, Charles S.Isabirye, M.Musa, S[Crotalaria ochroleuca as a green manure crop in Uganda]Crotalaria ochroleuca as a green manure crop in Uganda

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