Factors influencing the incidence of the black bean aphid, Aphis fabae scop., on common beans intercropped with maize
Diagnosis and correction of soil nutrient problems of common beans (Phaseolus vulgaris) in the Usambara mountains of Tanzania
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