Green peach gummy disease

Symptoms and pathological changes: The disease occurs in branches and branches, bark pores and wounds, cracks and other places, the initial disease slightly expanded, brown, after the outflow of translucent milky soft jelly, after the rain glue flow phenomenon is more serious. Colloidal substance becomes viscous in the air, yellowish brown, dry after a hard lake-like gel. The cortex and cytoplasm of the injured part turn brown and rot, and are easy to be infected by saplings. The disease was changed to non-infectious disease, which occurred in sap flow period and occurred more seriously in summer. There are many factors that cause gum flow, such as freezing injury, drought, sunburn, diseases and insect pests, mechanical damage, excessive pruning, operation injury, tree weakness, etc.

Prevention and control methods: 1, timely control of dry pests, winter branches painted white, to prevent freezing and sunburn, to avoid injury. 2. Improve soil, apply organic fertilizer, irrigate and drain in time, prune properly in time, and enhance plant growth potential. 3. If glue flow is found, cut it off in time, and then apply stone sulfur mixture to disinfect the wound. In addition, use wax or coal tar and other protective agents.

Prevention and treatment of peach gum disease

Spring, peach trunk, main branch bark or bark crack out of soft transparent resin, resin condensation into reddish brown. This is a physiological disease called peach gum disease. As a result of the glue flow site slightly swollen, cortex and xylem brown rot, vulnerable to saprobic bacteria attack. At the same time, due to the consumption of a large number of nutrients, often weak tree potential, yellow leaves and small, serious flowering scarce, and even dead branches. There are many factors causing gummosis of peach. Frost damage, freezing injury, dry pest damage, mechanical damage, excessive pruning, improper fertilization, excessive rainfall, too wet or too sticky soil are easy to cause the disease.

Measures to control peach gum disease:

One is suitable for trees. Green peaches should be planted in loose soil. Not too sticky, heavy water, good place.

Second, pay attention to reasonable repair. Cut, trunk painted white, prevent freezing injury and burns, timely control borer pests, avoid insect injury.

Third, increase the application of organic fertilizer to enhance tree vigor.

Fourth, in the dormancy period of peach, scrape off the colloid at the wound of glue flow, disinfect the wound with 0.1% mercuric chloride water or Baume 5 degree stone sulfur mixture, and then apply sealing wax or coal tar.

How to prevent and cure gum disease of red-leaf peach

Red leaf peach gum disease: mainly occurs in branches, especially in the branches most likely to occur, fruit and branches also occur gum flow. The glue flowing out is light yellow and transparent at first, the resin condenses gradually reddish brown, the diseased part is slightly swollen, the cortex and xylem become brown and rotten, other miscellaneous fungi are saprotic, the tree is declining day by day, the leaves are small and yellow, and when it is serious, the branches die. There are many factors inducing this disease, frost, sunburn, insect pests, fungi, poor growth or improper fertilization and winter shearing, etc.

Prevention and control methods: Gummosis occurs most frequently in spring. To prevent gummosis, strengthen tree vigor as the center and avoid all kinds of wounds. Before germination, the diseased parts are scraped off, coated with a mixture of Baume 5 and sulfur, and then protected with other protective agents. At the initial stage of the disease, 50% compound carbendazim suspension 600~800 times solution, or 70 wettable powder thiophanate-methyl wettable powder 600 times solution, or 70 wettable powder chlorothalonil wettable powder 600 times solution spray or smear, 7~10 days once, continuous 2~3 times can be controlled.