Diagnosis and correction of soil nutrient problems of common beans (Phaseolus vulgaris) in the Usambara mountains of Tanzania
Agrarian change and the changing relationships between toil and soil in Maragoli, Western Kenya (1900-1994)
AFLP analysis of African cassava (Manihot esculenta Crantz) germplasm resistant to the cassava mosaic disease (CMD)
A field evaluation using the (15)N isotope dilution method of lines of Phaseolus vulgaris L. bred for increased nitrogen fixation
Pathogenic Variability inPyricularia griseaat a Rice Blast "Hot Spot" Breeding Site in Eastern Colombia
Genotype x environment interaction and optimum resource allocation for yield and yield components of cassava