Abstract
In the southern savanna zones of Nigeria the local sorghum cultivars yielding up to 2170kg grain per hectare have to be early sown and grow through both the early and late rainy seasons. Photosensitive varieties bred for more northerly parts of the country when grown in the southern late season were found to flower at the desired time and give grain yields of 2490kg/ha or more. Shoot fly attack was less than expected but stemborers if not controlled by endosulfan could reduce yields by 45 per cent.
