Soybean plants in an experimental plot Improved soybean varieties Soybean seed germplasm Improved soybean varieties Soybean root nodules Improved soybean variety in soybean experimental plot Pot screening of hybrid soybean varieties Woman tending soybean farm Improved soybean varieties Improved soybean varieties Improved soybean varieties Foundation seed multiplication plot at IITA Ibadan Field workers tending soybean plants Farmer tending his soybean plants Researcher interacts with farmer in soybean farm Farmer in happy mood with his soybean plants Researcher inspecting soybean pods Farmer displaying soybean pods Resistance and susceptible soybean roots Resistance and susceptible soybean roots Soybean seeds and pods Soybean root nodules Purple stain on soybean seeds Soybean purple stain IITA mandate crops Improved soybean varieties