A study was conducted in Karnataka, India from 2013-14 at College of Agriculture, Bijapur, (UAS, Dharwad) to know the effect of weather parameters in seven dates of sowing from I Fortnight (FN) July to I FN of October on sunflower powdery mildew. Weather correlations in I FN July dates shown significant positive impact of cloud cover at 20-1 days before observation (DBO) on the powdery mildew incidence, highly significant parameters that affected the powdery mildew at 20-16 DBO were minimum temperature (- ) as well as maximum temperature () and maximum vapour pressure at () at 5-1 DBO. | Relationship between weather parameters and sunflower powdery mildew Erysiphe cichoracearum DC in various sunflower sowing dates
