Diseases and control of pollution-free soybean

(1) Root rot was controlled by seed coating with 2.5% Sealtime suspension seed coating agent according to 0.2%~0.4% of seed weight. (2) Downy mildew was controlled by spraying 58% Remido Manganese Zinc WP 500 times or 72% DuPont Clu WP 800 times, 65% Mancozeb WP 500 times for 1~2 times. (3) Spray 50% carbendazim WP 500~1000 times at the initial stage of soybean gray spot disease, spraying 2~3 times at intervals of 7~10 times. (4) After flowering, purple spot disease was controlled by spraying 50% carbendazim wettable powder 1000 times or 70% thiophanate-methyl wettable powder 1000 times. (5) Anthracnose serious disease field can be 50% carbendazim 1000 times or 70% mancozeb wet powder 400~500 times spray control. (6) mosaic disease (1) timely removal of seedlings. (2)Aphids were controlled by spraying 3000 times of 10% imidacloprid wettable powder or 5000~10000 times of 25% aclothide water dispersible granules. (3)At the initial stage of disease control, 1000 times or 500 times of virus A wettable powder of 1.5% Zhibingling emulsion can be sprayed once every 7~10 days for 2~3 times continuously.