In Rwanda, Common beans are grown under quite diverse conditions including soil fertility, rain fall, and cropping system. The objective of this study was to assess partitioning of soil minerals (Fe/Zn) into seeds and distribution of minerals within plant, effects of foliar Fe [Ferrous sulphate (2%)] application on seed iron and zinc content. Mineral concentrations in seeds were assessed at harvest using X-Ray Fluorescence Spectrometer (XRF). Genotypes were significantly different in their iron and zinc content with the means ranging between 51 – 126 ppm for iron and 28-45 ppm for zinc. Foliar iron application showed significant effect on some of the varieties in Rubona 2012A and Akanyirandoli 2012B and no significant effects on other varieties (bush and climbing) grown in Rubona and Akanyirandoli 2012A. Plant height has no significant effect on seed iron and zinc accumulation. Genetic and environmental interactions for bean seed concentration in iron and zinc was observed across sites at p<0.001.Keywords:
Soil fertility, Fe/Zn partitioning, plant canopy.