Recently, the editor of the pesticide information network received a consultation from a netizen. The persimmon tree was raised for two or three years. Recently, a small persimmon was formed, but all of them fell. What happened?
The following is the reply given to him by the editor of China Pesticide Network , for your reference only:
There are two reasons for the fruit falling in persimmon trees: one is the physiological fruit drop caused by the physiological imbalance of the persimmon tree itself, and the other is the fruit drop caused by the anthracnose or the persimmon.
The main reasons for physiological fruit drop: First, the flower bud differentiation is incomplete, causing early fruit drop; second, pollination is poor, the fruit can not develop, and the fruit is seriously damaged in the early stage; third, the flowering period is cloudy and rainy, affecting pollination, and easy to drop fruit; fourth, the tree structure is unreasonable. Poor ventilation and light transmission, resulting in thin branches, easy to fall off; Fifth, the soil is poor, due to insufficient nutrient supply and fruit.
Measures to prevent persimmon tree fruit drop: First, the pollination tree is arranged for individual varieties; secondly, the main trunk or main branch of the strong tree is cut in the flowering period, the width is not more than 0.5 cm, and it is better to use spiral ring cutting to facilitate healing and strengthen after ring cutting. Fertilizer water supply; Third, proper pruning, especially to strengthen summer pruning, promote ventilation and light transmission; Fourth, prevent pests and diseases, strengthen fertilizer and water management, and enhance tree potential; Fifth, spray natural brassinolide during flowering or young fruit period to prevent fruit drop it is good.
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