Two kinds of peach trees flow gum disease can be seen again
Peach tree gum disease occurs for a long time and may occur from April to October. If it is not discovered in time, it will cause serious consequences. Peaches flow gum disease non-infectious plastic glue disease and invasive flow glue disease, then how to distinguish between treatment and prevention?
Non-invasive fluidosis
Cause of the disease: Peach non-invasive fluidosis begins to occur at temperatures above 15°C, and may break out when humidity is around 25°C. The disease is caused by mechanical injury, insect injury, etc. It begins to be white transparent gel, and the color gradually changes to brownish red. When the temperature is high, the jelly-like substance is deposited on the surface of the wound like an eruption. The main site is mechanical injury and insect injury. And man-made injuries. Non-invasive fluidic gum disease is mainly caused by cold injury, diseases and insect pests, excessive or insufficient moisture, inappropriate fertilization, excessive trimming, and other reasons. Pear rot caused by normal cultivation, strong tree vigor, and less pests and diseases occurred less frequently. Older peaches have a higher incidence and younger trees have a lower incidence. The flow of fruit is related to insect pests. Blind beak damage is the main reason for fruit flow.
Control methods: to control non-invasive styrorrhea, we should first strengthen the cultivation and management, enhance tree vigor, pay attention to orchard drainage, increase organic fertilizer, improve soil, reasonably pruned, reduce trunk wounds. It is worth noting that, from late March to early April, peach aphid and peach aphid were hatched in large numbers, and 50% phoxim emulsion could be sprayed with 2000 times liquid and sprayed one or two times; after hatching, peach aphid and peach aphid were hatched. , Timely spraying 50% anti-influx 2000 times liquid, 10% imidacloprid WP 2000-4000 times, 20% cypermethrin 3000 times control.
Invasive fluidosis
Cause of the disease: The invasive fluidic disease is caused by a fungus of the subphylum Triphagium, which mainly occurs in rhizomes, stems, and branches. Perennial branches show vesicular uplift after injury, and the pathogens are harmed within the branches of the epidermis, reaching the xylem at the deepest, and the victim is brown and necrotic. The pathogenic bacteria can latent in the xylem of the damaged branch cortex and produce conidiospore and conidia in the dead cortex and become the source of infection.
Control methods: Spray 5 Baume degrees lime sulfur before germination, spray once every 10 days, even spray 3 times. In the early stages of the disease from late March to early April, 72% of agricultural streptomycin sulfate was sprayed with 4000 to 5000 times of liquid, sprayed every 7 days, and sprayed 2 to 3 times. At the same time, during the vigorous growth of peach trees, 25% SPK 500 to 800 times, 50% WP 800 times, and 70% WP WP 500 times every 7 days. , spray 3 to 4 times.
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