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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

Wortmann, Charles S. ,  [Diagnosis of nutritional disorders in beans using seed analysis] ,  Diagnosis of nutritional disorders in beans using seed analysis

Drechsel, Pay ,  Mutwewingabo, B ,  Hagedorn, F ,  Wortmann, Charles S. ,  [Soil and foliar phosphorus determination in Rwanda: Procedures and interpretation] ,  Soil and foliar phosphorus determination in Rwanda: Procedures and interpretation

Wortmann, Charles S. ,  [Foliar nutrient testing with the diagnosis and recommendation integrated system (DRIS) for beans] ,  Foliar nutrient testing with the diagnosis and recommendation integrated system (DRIS) for beans

Wortmann, Charles S. ,  [Bean improvement for low fertility soils in Africa : Proceedings of a working group meeting, Kampala, uganda 23-26 May, 1994] ,  Bean improvement for low fertility soils in Africa : Proceedings of a working group meeting, Kampala, uganda 23-26 May, 1994

Wortmann, Charles S. ,  Lunze, Lubanga ,  Lynch, Jonathan P. ,  [Bean improvement for low fertility in Africa (BILFA): II. Low soil phosphorus availability] ,  Bean improvement for low fertility in Africa (BILFA): II. Low soil phosphorus availability