1. What are white spots?Persimmons usually have a lot of white spots when they grow to maturity. This is actually because the persimmon tree has been attacked by the persimmon scale insect. This pest can easily occur on persimmon trees and may occur several times a year. It is well hidden and not easily discovered. It usually attacks the fruits and leaves of persimmon trees. If there is no prevention and control in the early stage, by around August or September, they will become insects with white wax shells, which will be more difficult to eliminate. 2. Treatment Methods1. Use the winter pruning method to cut off the branches damaged by pests and diseases, as well as the old bark, and finally burn the larvae that hibernate. In addition, there may be larvae on the remaining dried persimmon stalks, which should also be cut off in time. 2. Before germination, use Baume 5-degree lime sulfur mixture to spray the tree trunk to kill its larvae. 3. Before the larvae become wax shells, use cypermethrin or dichlorvos to spray. If it has become a white wax insect, it should be sprayed with wax scale. 4. If the insects crawl out of their shells, this is the most serious period of insect infestation. The third generation is also the most difficult to treat. It is best to spray with DDT or phoxim. |
<<: What to do if black bugs grow on rainbow jade
>>: What should I do if my crabapple flowers are infested with insects?
1. Soil The golden banyan tree is not picky about...
Suitable fertilizer for roses If you want to appl...
Cuttings Time of choice This method of reproducti...
1. Breeding environment (1) Temperature: Banyan t...
Hardwood cutting method Cutting selection It is s...
1. Too much watering Cause: Excessive watering ca...
1. Spring watering As for morning glory, it can u...
Can Buddaria be propagated by cuttings? Buddaria ...
Is betel nut production high? The yield of betel ...
Flower arrangement - living room The living room ...
1. Caused by light Jasmine is a plant that loves ...
Time for succulent division Succulents are a type...
Kale seed sowing time Kale can be planted and sup...
Henan is one of the main winter wheat producing a...
1. Breeding environment 1. Soil: The requirements...