Diseases and insect pests of peach trees and their control methods

The common diseases of peach trees are anthracnose, rot, white rust, black mildew, root cancer, perforation, leaf spot and so on. The common pests are aphids, longicorn beetles, heart-eating insects, stink insects and so on. Root cancer, leaf curl, yellow disease, aphids, red spiders and shell insects are the most common diseases. If it is a disease, it can be controlled with carbendazim, chlorothalonil, benzoin zinc and other insecticides. If it is an insect pest, it can be controlled with dimethoate, trichlorfon and other agents.

Introduction to the main insect pests and control methods of peach trees:

1. Peach aphid: (peach powder aphid, peach tumor aphid) can occur in spring, summer and autumn, especially in late spring and early summer. Endosulfan (Saidan, Shuodan) or pyridine heterocyclic insecticides can be selected when the control standard is reached. Imidacloprid or acetamiprid can also be used to control.

2. Peach heart borer: it is a drill string pest. The harm caused by eating into the fruit can be treated with the chemical in the first ten days of May, 50% phoxim or 48% loxobenzene 500g per mu plus twice the water, mixed into the poisonous soil of 25kg, sprinkled into the tree plate, shallow hoe and raked flat, closed the soil, or 50-75kg per mu with bicarbonate 50-mu, while spreading, while turning the soil, and then pat it well, using the fumigation and corrosion of ammonium bicarbonate to kill most of the pests, germs and grass seeds in the soil. According to the occurrence of insect pests, spraying during the oviposition period of adults should be timely controlled with 1800 Mel 2000 times plus diflubenzuron 1000 times or loxobenzene 1500 times plus avermectin 4000 times.

3. Red spider (spider mite): the occurrence of red spider (spider mite) is more serious in the season of drought and high temperature, and the development is rapid, the harm is serious, and the prevention and control is difficult. Abamectin plus hyperosmotic acarine can be used for timely control. Fenpropathrin and carbosulfan can also be used to control, and can kill a variety of pests.

4. Mulberry scale (peach shell insect): adults and nymphs cluster fixed branches and suck sap. It began to hatch in early May, and the second generation of female adults occurred in September. After mating and fertilization, they overwintered on the branches. Control measures: 1. Control during dormant period: peach trees are sprayed with 3mur5 Baumedu stone sulfur mixture or 45% stone sulfur mixture crystal 30mur50 times or 5% diesel emulsion before germination to eliminate overwintering female insects on branches. 2. Chemical control during the growing period: spraying in time before the shell is formed after nymph hatching is the key to chemical control, but this period is only a few days, must be grasped, otherwise, once transformed into a shell, because of wax protection agents are difficult to work. At present, the effective agents for the control of mulberry white scale are 48% sulfophene EC 1000 Mel 1200 times and 20% carbosulfan EC 1000 times.

The above is the introduction of peach tree diseases and insect pests and control methods. I hope it will be helpful to everyone.