Lettuce planting techniques: how to control Sclerotinia sclerotiorum of lettuce?

What are the hazards of Sclerotinia sclerotiorum of lettuce? How to control Sclerotinia sclerotiorum of lettuce? Please introduce the harm of Sclerotinia sclerotiorum of lettuce: after the plant is susceptible, the petiole near the ground first shows beige rot, then the leaves wither, and then the whole plant rotts. When the humidity was high, the diseased part produced white cotton floss, and in the later stage, black mouse fecal sclerotia were produced inside and outside the stem, the leaves of the diseased plant turned yellow, withered, and the whole plant withered. The sclerotia in the soil grow ascomycetes in autumn or spring and scatter ascospores and spread through the air. The control methods of Sclerotinia sclerotiorum of lettuce are as follows: 1. Irrigation in the field before soil preparation can make the sclerotia die. 2. During the rainy weather in early spring, it is recommended to use 1000 grams per mu or 50% chlorothalonil powder per mu for prevention and control, once a week, 2 or 3 times in a row. 3. Choose 50% carbendazim wettable powder 1000 times liquid, 50% Nongliling wettable powder 1000 times liquid, 40% Shijialing suspension 800times liquid, 65% carbendazim wettable powder 600x800 times liquid, 40% pyrimidine wettable powder 600x liquid, 40% Sclerotinia net wettable powder 500x liquid, 50% carbendazim powder 1500 times liquid, 50% propofoin wettable powder 600x800 times liquid spray, once every 7days. For 3 or 4 times in a row. Click to get more lettuce planting techniques click to get more vegetable planting techniques