Effect of date of sowing on the severity of mildew on two varieties was tested at the University of Agricultural, Sciences, Dharwad during Kharif, 1988. The crop was sown at fortnightly interval starting from June, 8. When assessed on 40th day after sowing, mildew severity was 0,22.9,52.3 and 56.8 per cent on KDM-1 and 0,24.4,49.7, and 58.1 per cent on china-mung on 1 st, 2nd, 3rd and 4th fortnight, respectively.