1、 What is the white dot

Persimmons usually have a lot of white spots when they grow to maturity. In fact, persimmon trees are invaded by persimmon scale insects. This kind of insect pest is easy to occur on persimmon trees. It may occur several times a year. It has good concealment and is not easy to be found. It usually damages the fruits and leaves of persimmon trees. If there is no prevention and control in the early stage, it will become white wax shell insects around August to September, which is more difficult to eliminate

2、 Treatment method

1. Adopt the method of winter pruning to cut off the branches damaged by diseases and insect pests and the bark of old trees, and finally burn the winter larvae. In addition, there may also be larvae on the remaining dried persimmon stems, which should be cut off in time

2. Before germination, spray the trunk with Bomei 5 degree stone sulfur mixture to kill its larvae

3. Before the larvae become wax shells, spray them with insecticide or dichlorvos. If it has become a white wax shell insect, it should be sprayed with wax scale spirit

4. If the insects climb out of the shell, this is the most serious period of insect damage, and the third generation is also the most difficult to treat. It is best to spray with dichlorvos or phoxim