MySheen

Lettuce planting techniques: how to control lettuce downy mildew?

Published: 2024-11-08 Author: mysheen
Last Updated: 2024/11/08, How to prevent and cure lettuce downy mildew? Please introduce the method of lettuce downy mildew is a common disease of lettuce, which occurs everywhere. Lettuce downy mildew is mainly caused by flagellum subphylum downy mildew. It is generally harmful to the leaves of crops. Lettuce leaves with downy mildew, the disease spots are yellow and nearly round spots.

How to prevent and cure lettuce downy mildew? Please introduce the method of lettuce downy mildew is a common disease of lettuce, which occurs everywhere. Lettuce downy mildew is mainly caused by flagellum subphylum downy mildew. It is generally harmful to the leaves of crops. The leaves of lettuce with downy mildew were yellow near round spots at first, and then developed into yellowish brown spots, which were polygonal due to the limitation of leaf veins. Lettuce downy mildew usually occurs under rainy and humid conditions, and white mildew grows on the disease spots on the back of the leaves. Prevention and control method of lettuce downy mildew: 58% Ruidu mildew manganese zinc powder 1000 times liquid, or 72.2% Pulic water agent 1000 times solution, sprayed once every 7 to 10 days, continuous spraying for 2 times for 3 times. Click to get more lettuce planting techniques click to get more vegetable planting techniques

 
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