Control measures of common diseases and insect pests in pear trees

The pear we eat is very sweet and contains very high nutritional value, but pear trees are a very easy disease species. The following small series will introduce common pest control measures for pear trees.

Common diseases and insect pests of pear trees include common diseases and insect pests of pear trees, such as black spot disease, pear rust, pear psyllid, pear whitefly, etc. Specific control methods are as follows:

1. Control of pear scab

Pear scab, also known as scab disease, is a strong epidemic disease. Pear scab is the main disease of pear trees, and all young tissues of pear trees are particularly susceptible to infection. It is an important pear disease which occurs widely in the north and south regions of China and causes great losses. It damages from flower dropping stage to fruit maturity stage.

Control: thinning flowers and fruits combined with cutting off diseased shoots can prevent pear disease to a large extent; 7~10 days after pear flower drop, use 40% Fuxing 8000~10000 times to control; for infected pear trees, 80% mancozeb 800 times should be sprayed.

II. Pear rust control

Pear rust is also called red star disease. Pear rust will harm pear leaves, pear shoots and pear fruits. Pear rust disease leaves began to show yellow spots, gradually expanded to oval, to the late pear disease, pear leaves black spots died.

Control: Pear tree leaves to young fruit stage, spray 40% Fuxing diluted 8000~10000 times solution every 10 days, 2-3 times can make pear tree restore health.

III. Control of pear psyllid in pear trees

P. pyriformis generally does not cause serious damage, only in the orchard planted more trees in the scenic areas and urban suburbs, serious damage occurred in the north and south fruit areas of China. It can harm not only pear trees, but also pear stems, crabapple and hawthorn plants. Pear psyllid adults can damage pear leaves and tender shoots, and induce pear soot disease, resulting in pear defoliation, fruit deterioration and even fruit drop yield reduction.

Control: spraying 1250~1500 times of insect mite and 3000 times more of rehabilitation on pear leaves and branches. Artificial insect catching can also be used on pear trees.

IV. Control of pear yellow powder aphid

Larvae and adults of Pyrus pears mainly feed on pear fruits and reproduce in pear fruits. The affected pear fruit will have small yellow concave spots and gradually turn dark brown.

Control: From March to May, the overwintering eggs hidden in pear trees can be eliminated by scraping the pear tree skin; 25% Kuaishate 1500~2000 times can be used to spray the pear trees after the overwintering eggs hatch and in late June.

Because pear tree diseases are generally infectious, once found pear tree disease should be treated in time. I hope the above four kinds of pear tree common pest control measures can help you, finally, Xiaobian wishes everyone planted pear trees can be far away from pests and diseases.