What are the control methods for peach tree aphids?

The peach tree aphid is a polyphagous pest with host plants spanning about 74 families and 285 species, and it has alternating hosts. Its winter host plants mainly include pear, peach, plum, apricot, cherry and other Rosaceae fruit trees, while its summer host crops mainly include Chinese cabbage, cabbage, radish, mustard, rapeseed, turnip, sweet pepper, chili pepper, spinach and many other crops. Let's take a look below at the control methods for peach tree aphids!

Trunk painting with pesticide

Take 1 part of 40% omethoate, add 1 part of a multifunctional plant synergist and 2 parts of water, mix to prepare the pesticide solution, and use a brush to paint a pesticide ring about 10 cm wide on the trunk. If the bark is rough, first scrape off the old peeling bark before applying the pesticide. After applying, wrap it well with newspaper or plastic film.

Trunk injection

Trunk injection for peach trees means using an iron awl to pierce a hole diagonally from top to bottom on the main trunk, deep enough to reach the xylem, then inject 40% dimethoate with a No. 8 syringe, and seal the hole opening. After 2 to 3 days, more than 95% of the aphids can be killed.

Spraying pesticide

There are many pesticides that can be chosen. Those commonly used in production include 35% endosulfan emulsifiable concentrate at 1500 times dilution, 50% pirimicarb at 3000 to 4000 times dilution, 50% phoxim emulsifiable concentrate at 1500 times dilution, 40% omethoate at 1500 times dilution, 50% malathion emulsifiable concentrate at 1000 times dilution, 10% imidacloprid wettable powder at 5000 times dilution, and so on. To improve the control effect, a certain amount of spreader can be added to the pesticide solution. Several pesticides should be used alternately, and the use of a single pesticide should be avoided as much as possible.

Protect natural enemies

Aphids have many natural enemies, such as ladybugs, hoverflies, lacewings, parasitic wasps and so on, all of which have a strong suppressive effect on aphids. Therefore, broad-spectrum insecticides should be sprayed as little as possible, and spraying should be avoided during periods when natural enemies are abundant, so as to protect natural enemies and use them to eliminate aphids. This is of great significance for protecting the orchard ecological environment and producing pollution-free green fruit.