What are the control measures for tomato gray mold?

Botrytis cinerea is a serious and common disease on tomatoes, and some leaves, stems and fruits in the shed are diseased. The years with low temperature and continuous rainy weather are serious. When the disease is serious, the diseased leaves are dead, the diseased branches are broken, and a large number of burnt flowers and rotten fruits directly affect the yield. Control method:

First, the ventilation temperature and temperature management should be strengthened to increase the temperature of the shed and reduce the humidity in the shed. That is, when the shed temperature rises to 33 °C, the top wind is started again. When the shed temperature drops to 20 °C, the vent is closed, and the night shed temperature is kept at 15-17 °C.

Second, watering should be carried out in the morning, watering at the beginning of the disease to prevent condensation.

Third, timely removal of diseased leaves, side branches, diseased fruit and concentrated burning or deep burial to avoid artificial transmission.

4. Chemical control of tomato gray mold

1. Use before planting. The tomato seedlings were sprayed with 50% keering WP 1500 times or 50% carbendazim WP 500 times, and the disease-free seedlings were required to enter the shed.

2. Take medicine when dip. The method is to use the 0.1% 50% keeling WP or 50% carbendazim WP to dip or smear the first spike when it is flowering. Make the flower medicine.

3, the first day of pouring the fruit water medication. It is controlled by using 65% of the methicillin WP 800 times solution or 50% of the carbendazim WP 700 times or 50% of the methicillin WP 700 times.

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