Zimbabwean farmers last year produced 30 000 tonnes of soya beans, according to Oil Expressers’ Association of Zimbabwe. SEED manufacturer SeedCo has lost about 25 percent of its soya bean seed stock for the 2017/2018 season to a resurgent stem rot disease called sclerotinia, a senior executive has said. The company’s global head for research, John Derera, however, told The Financial Gazette that the loss would not affect seed supplies for the season. “We have discarded a huge amount of seed because of the disease. About 25 percent of the seed has been affected. We are looking at supplying not less than 7 000 metric tonnes which augurs well with the figures we distribute each year,”…