How to control diseases in greenhouse tomatoes? Bacterial wilt, Fusarium wilt, and root-knot nematode disease can cause tomato plants to wilting, thus affecting tomato yield, and serious disease can lead to plant death. Therefore, planters should timely implement disease prevention and control measures. The prevention and control measures for the three types of diseases are described below, and I hope that they can help everyone.

First, bacterial wilt

Use DT plus neomycin or agricultural streptomycin to add rooting agent. Before the root can be treated, protective spray should be carried out on tomato plants without disease. For tomato plants that have already developed disease, they should be removed to the greenhouse in time, buried or burned, and the soil should be disinfected at the same time.

Bacterial wilt can be spread by running water, so flooding is strictly prohibited.

Spray some plant growth conditioners or foliar fertilizers to promote tomato plant growth.

In the process of tomato planting, less nitrogen fertilizer should be applied, and organic fertilizer and phosphorus and potassium fertilizer should be applied to enhance the disease resistance of the plant.

Second, blight

Rotate tomatoes with spicy vegetables (scallions, garlic) for 3-4 years.

Use disease-free seeds or soak seeds for 52 minutes with warm water at 52 degrees before sowing.

Disease-free soil seedlings, strengthen management, and reduce soil temperature.

In the early stage of the disease, the roots were filled with 50% bacteriostatic 1000 times solution, 200 ml per plant, and once every 7-10 days, even 2-3 times.

Third, root knot nematode disease

Strengthen field management, rationally fertilize and water, and enhance disease resistance.

In the middle of tomato growth, avermectin plus harvest No. 1, Avi organic fertilizer and other prevention and treatment.

At the time of sowing or planting, the point of Zhijianzhi medicine fertilizer, Awei organic fertilizer, etc., control root knot nematode damage.

During the leisure period of the greenhouse, it is treated with lime and high temperature.

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