What are the common pests and diseases of Japanese late cherry?

Root nodule disease

The site where root nodule disease occurs is on the ground or near the root crown close to the ground, thereby causing stunted plants and poor growth. When the disease occurs, root nodules of various shapes form on the roots of the plant, appearing brown, with rough epidermis often accompanied by cracking.

Anthracnose

In the early stage of anthracnose, circular disease spots appear on its young leaves, and when these spots heal, they form holes. After June the leaves harden, and at the same time irregular rough disease spots appear on the leaf surface, brown in color. In severe cases, it causes a large amount of leaf drop, accompanied by blighted buds.

Leaf shot hole disease

In leaf shot hole disease, small grayish-brown circular spots appear on the leaves, which then gradually expand into circular spots about 3 cm in diameter. The specific features of the spots are that their boundaries are clear, the outer part of the spot is purplish-brown, while the inner part of the spot is whitish-brown with concentric rings. After the spots fall off, irregular holes are formed.

So, do you know how to solve it?

Common pests and diseases of Japanese late cherry in summer and their control

        Japanese late cherry is a deciduous tree of the genus Cerasus in the Rosaceae family, native to Japan, and widely cultivated in North China and regions to the south. It is a major early-spring flowering tree species. Summer is the season when its pests and diseases frequently occur. The pest and disease control techniques are introduced below for reference only.
       I. Damage from common pests.
       The common pests of Japanese late cherry include: brown marmorated stink bug, green peach aphid, carrot willow aphid, apple yellow aphid, Japanese felt scale, wisteria mealybug, mulberry white scale, Korean globose scale, yellow slug moth, cotton leaf roller, large bagworm, tea bagworm, brown leaf roller, brown-margined green slug moth, double-toothed green slug moth, beautiful green slug moth, traced green slug moth, pear slug moth, mulberry brown slug moth, peach red-necked longhorn beetle, gypsy moth, small green leafhopper, etc.
       Control methods: if they occur, use 3% high-penetration fenoxycarb emulsifiable concentrate at 3000 times dilution to spray and kill brown marmorated stink bug; use 10% imidacloprid wettable granules at 2000 times dilution to spray and kill green peach aphid, carrot willow aphid, and apple yellow aphid; use 3% high-penetration fenoxycarb emulsifiable concentrate at 3000 times dilution or 10% imidacloprid wettable granules at 2000 times dilution or 95% jiemanling emulsion at 400 times dilution, 20% sujieke emulsifiable concentrate at 1000 times dilution to spray and kill Japanese felt scale, mulberry white scale, and Korean globose scale; use 3% high-penetration fenoxycarb emulsifiable concentrate at 3000 times dilution or 1.2% nicotine anabasine at 1000 times dilution to spray and kill gypsy moth, brown leaf roller, cotton brown-banded leaf roller, large bagworm, and tea bagworm; use 20% diflubenzuron suspension concentrate at 7000 times dilution and Bt emulsion at 500 times dilution to spray and kill yellow slug moth, brown-margined green slug moth, double-toothed green slug moth, beautiful green slug moth, traced green slug moth, pear slug moth, and mulberry brown slug moth; use green weilei at 200 times dilution to spray and kill peach green-necked longhorn beetle; use 25% buprofezin wettable granules at 1000 times dilution to spray and kill small green leafhopper.
       II. Common diseases.
       The common diseases of Japanese late cherry include: root nodule disease, anthracnose and leaf shot hole disease.
       When root nodule disease occurs, nodules appear on the roots of the plant, varied in shape and uneven in size, brown to dark brown in color, with rough epidermis often showing cracking. The sites where they occur are on the ground or near the root crown close to the ground, or at the junction of the rootstock and the scion. After the plant is damaged, it often shows poor growth and stunted size.
       Control methods: dig up the affected plant, rinse off the soil, soak the roots in a 1% copper sulfate solution for 5-8 minutes, rinse after soaking, and then replant; cut off the nodules, apply 0.1% mercuric chloride solution to the wounds, and then replant.
       In the early stage of anthracnose, circular disease spots form on young leaves. After the spots heal, they can form holes. After June the leaves harden, and the disease spots on the leaf surface are rough, forming brown irregular disease spots. In severe cases, it can cause a large amount of leaf drop and cause blighted buds.
       Control methods: alternately spray with 70% mancozeb wettable granules at 1000 times dilution or 50% carbendazim wettable granules at 500 times dilution, 50% tuijunte wettable granules at 1000 times dilution, spraying 3-4 times in a row, with an interval of 7-10 days each time; during the disease period, leaf spraying on the plant is prohibited.
        When brown spot shot hole disease occurs, small grayish-brown circular spots first appear on the leaves, and as the disease develops they gradually form circular spots about 3 cm in diameter. The boundaries of the spots are clear, the outer part is purplish-brown, and the middle is whitish-brown with concentric rings. After the spots wither and fall off, irregular holes are formed.
       Control methods: after the disease occurs, spray 50% jiaruinong at 1000 times dilution for control, once every 10 days, continuously spraying 3-4 times, which can effectively control the disease.

Control methods for common pests and diseases of Japanese late cherry