The main symptoms of the cultivation of open fields, occurred in June in the high temperature and drought conditions, especially when the dry hot wind is most likely to occur. The stigma of the flower's pistil turns brown and the cells die, losing pollinating ability, causing the tomato to fall due to failure to pollinate normally, which reduces the fruit setting rate and seriously affects the yield in the middle and later periods.
The cause of the disease was air-drying and the temperature was too high, causing the stigma cells to lose water and die.
Control methods Watered in time to ensure proper soil moisture; Plants were adjusted to ensure ventilation in the field; At noon, hot air was sprayed to spray water between the rows of tomatoes as an emergency measure to increase air humidity.
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