Sunflower Verticillium wilt occurs mainly in the adult plant stage. Before and after flowering, the leaf tip part of the leaf begins to chlorosis, then the leaf tissue of the whole leaf chlorosis, yellowing between the leaf margin and lateral veins, and then turn brown. The disease progressed from the bottom to the top, and the vascular bundles of the diseased stems were browned. All the dead leaves of the diseased plants died from dryness. The middle leaves were mottled and died before severe flowering. When the humidity was high, white molds appeared on both sides or stems. Sunflower Verticillium wilt is controlled as follows: (1) Selection of disease-resistant varieties. (2) A reasonable rotation requires at least 3 years of rotation. (3) Strengthen cultivation and management, appropriate sowing, appropriate close planting, increase phosphorus and potash fertilizers, increase plant disease resistance, clean up field disease and debris in time, reduce the source of disease, the stalks should be timely burned to prevent the spread of disease spread. (4) Chemical control. 1 Seed treatment: 50% carbendazim WP, 50% thiophanate-methyl wettable powder seed dressing at 0.5% seed, or 80% thiram WP according to 0-2% seed dressing . 2 Irrigating roots: 20% of rust-free and emulsifiable concentrate 400 times liquid to irrigate the roots, each with 500 ml of good liquid medicine. 3 Foliar spray: In the early stage of disease, 50% Tuzet WP 500 times, 50% Carbendazim WP 500 times, 70% thiophanate WP 800~1 000 times , 64% anti-virus WP 1 000 times, 77% copper hydroxide wettable powder 400 times, 14% urea copper wettable powder 250 times, 75% chlorothalonil wettable powder 800 times etc. Foliar spraying. Puyang Linshi Medical Supplies Co., Ltd. , https://www.linshimedical.com