ABSTRACT
Poor seed quality in the northern USA is primarily the result of infection with an undescribed species of Phomopsis. Diaporthe phaseoiorum var. sojae (Dps) and D. phaseoiorum var. cauiivora (Dpc) are minor components of the seed rot complex. Phomopsis differs from Dps and Dpc by the absence of the perfect stage in both nature and culture, by pycnidial characteristics, and by stroma development and other cultural characteristics. Soybean has attracted the attention of cultivators in India. The State of Madhya Pradesh has proved best for soybean production and is occupying the maximum acreage in the country. The seeds produced in various parts of the state were examined for the associated microflora and quality. A soybean seed lot with a 15 percent in vitro germination with 45 percent of the seed infected with Phomopsis sojae and 29 percent with Fusarium semitectum and germination potential of 66 percent were soaked in each solvent fungicide mixture for one hour.
