lettuce cultivation: lettuce gray mold how to control?

It is also the annual lettuce planting season, which has been harmed by Botrytis cinerea in previous years. How to prevent and cure this year's lettuce grey mold? Netizens are also asked to introduce the harm of Botrytis cinerea to lettuce: Botrytis cinerea mainly harms the leaves and stem base of lettuce, seedlings are mostly damaged on stems and leaves close to the ground, and the disease begins from the old leaves after planting. The diseased part showed waterlogged disease spot, the leaves turned yellow and withered, the diseased stem rotted, dense mouse gray mold, and in severe cases, the whole base near the ground was infected, causing the plant to wither. Control methods of lettuce gray mold: 1. Lettuce seed control method: select healthy plants to keep seeds, select seeds with salt water (0.5 kg salt and 5 kg water) before sowing, and remove sclerotia mixed with seeds. 2. Environmental improvement method: remove old leaves, improve ventilation conditions, strengthen ventilation and reduce diseases. 3. Cultivation methods: plastic film mulching cultivation, reasonable fertilization, increasing phosphorus and potassium fertilizer, cleaning the countryside, pulling out the central diseased plant. 4. Chemical prevention and treatment: the following agents can be sprayed, 50% carbendazim wettable powder 1000 to 1500 times, or 50% carbendazim wettable powder 1000 to 1500 times, or 50% lide (isobacteria ·Fu) wettable powder 800 to 1000 times. Click for more lettuce planting techniques click to get more vegetable planting techniques