Tomato bacterial wilt is a relatively common disease, also known as "black rot" or "black stem disease". Bacterial wilt mainly harms tomatoes, cucumbers and other solanaceous vegetables and is one of the soil-borne diseases. It usually harms tomatoes, cucumbers and other nightshade vegetables, mainly tomatoes, especially in the middle and late stages of tomato growth. Tomato bacterial wilt mainly occurs in the green fruit stage and fruit expansion stage. Once it becomes infected, it will cause fruit rot, deformation, slow growth, etc. So today let's learn about the prevention and control methods of tomato bacterial wilt!
1. Planting time
Bacterial wilt is a soil-borne disease. If there are a large number of pathogens in the soil, the pathogens will invade the plants from the roots and cause plant disease. When planting tomatoes, if you plant them too early, the tomato seedlings will grow in the cold winter, which will also cause the pathogens in the soil to not be killed, thus affecting the health of the seedlings. Therefore, under normal circumstances, tomato seedlings can be planted when they grow to about 10 cm.
2. Choose disease-resistant varieties
When selecting bacterial wilt-resistant varieties, you must first consider local climate conditions. If the local climate conditions are good, you can choose varieties with strong disease resistance, which can greatly reduce the damage caused by bacterial wilt to tomato plants. Secondly, you need to choose tomato varieties that mature early, have high yield, good quality and are storage-resistant, because these varieties can be put on the market in advance and avoid the damage of bacterial wilt disease to tomato fruits. Finally, we need to pay attention to the differences between varieties. There are great differences in the resistance to bacterial wilt among different tomato varieties. Choose varieties with stronger bacterial wilt resistance.
3. Soil sterilization
Carry out soil sterilization treatment before transplanting seedlings. You can also mix soil-borne crop fungicide with water or dropper to prevent sterilization of roots in advance when pouring water to slow down the seedlings about 7 days after transplanting. Soil sterilization is the most commonly used method to prevent tomato bacterial wilt. It saves trouble, money and effort, and has the best effect!
4. Planting management
When planting, you should pay attention to choosing land with better drainage. When planting, you should plant reasonably densely to avoid the field being too wet. During the growth period of tomatoes, timely watering is required to prevent the soil from being too dry. Timely replenishment of water can promote the growth of tomatoes and increase resistance to bacterial wilt. Fields should be disinfected regularly during planting. During the growth period of tomatoes, attention should also be paid to timely removal of weeds, fallen leaves and diseased plants in the field to avoid bringing pathogens out of the field. If diseased plants are found in the field, they must be cleaned up promptly to avoid infecting other plants. When planting tomatoes, you should also fertilize them reasonably and try to avoid applying nitrogen fertilizer, otherwise it will affect the absorption of nutrients by tomatoes.
To sum up: Tomato bacterial wilt is a soil-borne disease, and prevention must be the first priority and treatment as a supplement! Preventive measures in advance can avoid losses caused by the occurrence of bacterial wilt in the later stage!
