How to prevent and control soft rot of lettuce

Soft rot often begins in late and late stages of lettuce growth. It starts from the wounds at the base of the plant, and the diseased part is irregularly shaped, water-stained, filled with light gray-brown viscous material, and releases a foul odor. With the development of the disease, the disease extended rapidly upwards.

Prevention and control methods: 1. Agricultural prevention and control. The severe disease plots are planted with high ridges or sorghum; rational fertilization, composting with formula fertilizers, organic fertilizers, and enzyme-based crops is used, and base fertilizers are used to avoid partial nitrogen fertilizers. The planting period should be suitable to avoid the high temperature season and the rainy season in the susceptible season; in the high temperature season, shade nets or non-woven fabrics should be used for shade and rain protection; after watering or after rainfall, attention should be paid to drainage at any time to avoid the accumulation of water in the fields;

2. Drug control. During the growth period, attention should be paid to the prevention of plant wounds caused by pests such as beet armyworm and Spodoptera litura. At the beginning of the disease, 47% Garethon WP can be used for 600 to 800 times, 50% can be used to kill WP 500 times, or agricultural streptomycin can be used for 5,000 times. Spraying can be done every 7 to 10 days. Even spray 2 or 3 times.

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