Control Methods and Technical Key Points for Sclerotinia Stem Rot of Rapeseed

(Agricultural Wealth Network) First, implement rice-rapeseed rotation; dryland rapeseed should be rotated with barley, wheat, etc. for more than 2 years. Second, in rainy areas, make narrow beds and open deep furrows, and promptly clear the furrows to prevent waterlogging. Third, select varieties with low susceptibility to the disease. Fourth, sow disease-free seeds. Fifth, apply nitrogen fertilizer rationally, in combination with phosphorus and potassium fertilizers and trace elements such as boron and manganese. Sixth, during the flowering period, remove diseased, yellow, and old leaves from the middle and lower parts of the plants 1 to 3 times, and carry them out of the field for deep burial or burning. Seventh, when the leaf disease incidence rate reaches more than 10% at full flowering stage and the stem disease incidence rate is below 1%, spray the plants. Eighth, after rapeseed harvest, pull out the stubble in dryland, and gather the residual stalks and pod shells together for composting or burning.