Soft rot is a kind of bacterial disease, which is easy to happen when the environment is humid. The plant is rotten and stinky.
Once the lettuce is found to have soft rot, pull it out immediately, clean it up, and spray a small amount of fungicide in time.
Sclerotium disease is very harmful to lettuce. When the disease occurs, there are yellow brown spots on the leaves, and the whole stem will rot gradually, so once the plant has sclerotium disease, it is basically inedible.
Before planting, the soil should be disinfected to prevent the growth of lettuce from being affected by the planting of soil with bacteria. During the maintenance period, it is necessary to ventilate in time, spray once bactericide or powder after growing seedlings, which can effectively fight against Sclerotinia.
The downy mildew of lettuce can occur in seedling stage and adult stage, but the damage of adult is more serious. At the onset of the disease, the leaves appear pale yellow and nearly round spots from the bottom to the top, and white colonies grow when the environment is humid. The downy mildew of potted plants can't be eaten basically, so prevention must be done well.
Increase the planting density properly and water and apply fertilizer in time. If a small amount of disease spots are found in the plant, pull out in time, do not infect other plants.
