The latest course of techniques and methods for pest control of pistachio trees

Pistachio trees are not native seedlings in China. Pistachio trees are widely planted in Syria and other countries, and have also been widely cultivated in Xinjiang and other places. They are ancient tree species in the arid subtropics. The diseases are mainly gum disease, leaf spot disease, root rot, and so on. The main insect pests are wax scale, small giant head bug, weevil and so on. Let's take a look at the pest control techniques of pistachio trees.

Gum disease of pistachio tree

[hazard characteristics] Gum disease mainly occurs on the branches and fruits, and the branches with serious gum flow cause the bark to crack and be covered with colloid blocks, so that the tree is weak until it dries up and dies.

[prevention and treatment] ① scraped off the flowing glue in time, cleared the scraped glue, burned it centrally, and smeared 0.2% nail purple lotion on the spot after scraping. ② sprayed stone sulfur mixture before the tree germinated.

Pistachio leaf spot

[hazard characteristics] since the beginning of the rainy season every year, leaf spot disease has caused partial damage to leaves and fruits, turning brown, causing leaves to fall early, and affecting the development of pistachio fruit, resulting in serious yield reduction or loss of harvest.

[control method] ① cleaned the fallen leaves of pistachio, cut off the diseased leaves and burned them centrally. During the onset of ②, the whole plant was sprayed with Bordeaux solution in time.

Root rot of pistachio trees

[harm characteristics] Root rot is a kind of root rot disease that harms pistachios, which can cause pistachio plants to grow weak and wither and wither.

[control methods] ① strengthens garden management and applies more organic fertilizer to make pistachio trees grow healthily and enhance disease resistance. ② was used to irrigate the roots of diseased trees and the plants that might be infected by copper sulfate.

Brown helmet wax scale of pistachio tree

[damage characteristics] the nymphs and female adults of brown wax scale after overwintering were fixed on the branches of pistachio plants, and their growth and development weakened after being killed, resulting in a serious reduction in yield.

[control methods] ① wipes off the female shell from the branches with a dishcloth before the adults lay eggs. ② was sprayed with stone-sulfur mixture before pistachio germinated.

Small big head worm of pistachio tree

[hazard characteristics] if the larvae eat the leaves and cause harm, they can eat up the leaves within 4-5 days.

[control method] ① artificial digging insect pupae: in the pistachio orchard, dig and pick up insect pupae on a tree planer. ② electric lamp traps moths: the adults have strong phototaxis and can be used to trap and kill adults by lighting lamps.

Pistachio tree weevil

[hazard characteristics] the adult weevil overwinters in the litter under the tree in winter, and gnaws on buds and inflorescences when the pistachio plant blossoms in spring, which seriously affects the yield of pistachio.

[prevention and control method] ① manual hunting, catching before sunrise, the method is to spread plastic film under the tree, and then shake the branches to make the vibration lag behind to catch and kill. ② turns the tree plate deeply in autumn and winter, and the practice is to turn the latent topsoil below 28 cm in 3-6 cm, so that it can not be unearthed and eliminated. When adults are unearthed after overwintering, ③ can apply poisonous soil in the tree plate. 2% trichlorfon powder can be used. Each adult tree is sprinkled with 155g powder, sprinkled and raked lightly.