How to Prevent and Control Downy Mildew in Rapeseed? A Full Analysis of Practical Methods

(Agricultural Wealth Network) First, crop rotation. Rotating with gramineous crops for 1 to 2 years or alternating paddy and dryland cultivation can reduce the number of pathogen spores in the field, thereby lowering the incidence of the disease. Second, seed saving from disease-free plants and seed treatment. Before harvest, save seed from disease-free plants in the field, or before sowing select seeds with 1% salt water, take the sunken plump seeds, rinse them with clean water, dry them in the shade, and then sow.