Distribution of powdery mildew of greengram in major growing areas of northern karnataka, India

Greengram powdery mildew caused by Erysiphe polygoni is a major disease in greengram growing areas of northern Karnataka and causes considerable yield loss in greengram and other pulse crops. Survey was conducted during kharif, 2012 revealed that the greengram powdery mildew was prevalent in all greengram growing fields in parts of northern Karnataka. However, incidence was maximum at Bidar followed byGulbarga and Yadgir districts and least was at Raichur.