Control techniques of diseases and insect pests in pistachio trees

Pistachio tree is not a Chinese origin seedlings, in Syria and other countries pistachio tree is very common planting, in ** and other places have been widely cultivated, belongs to the arid subtropical ancient tree species, diseases mainly have gum disease, leaf spot disease, root rot, etc., insect pests mainly Helmet wax scale, small head insect, weevil, etc., let's take a look at the pistachio tree pest control technology!

pistachio gum disease

[Harm characteristics] Gummosis mainly occurs on branches and fruits. The branches with serious gummosis cause the bark to crack, and are covered with colloid blocks. The tree is weak until it dries up and dies.

[Prevention and control methods] ① timely scrape off the glue, remove the scraped glue, and focus on burning, apply 0.2% of the purple liquid on the spot after scraping. (2) Spraying sulfur mixture before tree germination.

pistachio leaf spot

[Harm characteristics] Since the beginning of the rainy season every year, leaf spot disease has damaged parts of leaves and fruits, causing browning, and causing early fall of leaves, and affecting the development of pistachio fruits, resulting in serious yield reduction or loss of harvest.

[Control methods] ① Clean pistachio leaves, cut off diseased leaves, and burn them intensively. (2) spray the whole plant with Bordeaux mixture in time during the disease onset period.

root rot of happy fruit tree

[Hazard characteristics] Root rot is a kind of root rot disease that harms pistachios. Serious damage will lead to the growth weakness of pistachio plants to dry and wither.

[Control methods] ① Strengthen the management of the garden, increase the application of organic fertilizer, so that the pistachio tree grows strong, thus enhancing disease resistance. (2) The infected trees and the surrounding plants may be infected, and the roots are irrigated with 300 times copper sulfate solution.

Pistachio tree brown helmet wax scale

[Hazard characteristics] The nymph and female adult of brown helmet wax scale after overwintering are fixed on the branches of pistachio plants to cause damage. After being killed, their growth and development are weak, resulting in serious yield reduction.

[Control methods] ① Before adult eggs are laid, manually wipe off the female scale on the branches with a rag. Before pistachios germinate, spray with sulfur mixture.

Pistachio tree beetles

[Harm characteristics] Small big head insects cause damage by eating leaves with larvae. If the damage is serious, the leaves can be eaten up within 4-5 days.

[Control method] ① Artificial digging of insect pupae: In the garden of pistachio, dig and pick up insect pupae.② Electric light lure moth: use this insect adult has strong phototaxis, to light trap adult.

pistachio weevil

[Harm characteristics] Weevils overwinter in fallen leaves under trees in winter, and nibble on buds and inflorescences when pistachio plants bloom in spring, seriously affecting pistachio yield.

[Prevention and control methods] ① Artificial killing, catching before sunrise, the method is to spread plastic film under the tree first, then shake the branches, so that the vibration falls behind to kill. 2. Deep turning of the tree tray in autumn and winter, the practice is to turn the topsoil hidden in 3-6 cm below 28 cm, so that it cannot be unearthed and destroyed. (3) When the adults emerge after wintering, poison soil can be applied in the tree tray, 2% trichlorfon powder can be used, 155 grams of powder can be sprinkled on each adult tree, and shallow raking can be carried out after sprinkling.