What disease does the small black round bubble born on the branches of apricot belong to and what method can be used to get rid of it?

In the past, the cause of gingival bleeding has always been mistaken as the main factor of physiological diseases, so the prevention and treatment is not ideal. It is confirmed that the gluing system of peach is caused by fungal infection, that is, botrytis cinerea and ascomycetes (fungi belonging to ascomycetes).

Pathogens overwinter in infected tissues of trunks and branches with hyphae and conidia. In the second year, a large number of conidia were produced before and after flower germination, which spread by wind and rain and invaded from wounds or lenticels, and could invade again in the future.

Extended data

Prevention and treatment

1. Strengthen fertilizer and water management, and apply 40-80 kilograms of organic fertilizer to an acre of land. Peach trees are drought-tolerant, suitable for planting in loose soil, and sprayed with 1000 times of general Shugu liquid in time for disinfection. Before the flower dew turns red, apply sulfur mixture on the branches to clean the garden, or use 0.04% brassinolide aqueous solution to enhance the tree vigor and improve the disease resistance.

2. Master the new management technology of scientific pruning, pay attention to pruning and retraction in time during the growing season, prune branches less in winter, and reduce branch wounds. After pruning, the wounds are coated with calluses in time to protect the wounds from external bacterial infection and effectively prevent the wounds from rotting and gumming. Pay attention to thinning flowers and fruits to reduce the load.

3. In order to prevent timely medication in April-May of the growing season, spray 1000 times 70% thiophanate-methyl wettable powder, 800 times 72% rice blast amide wettable powder, 5000 times 43% tebuconazole suspending agent or 10% every day.

4. When treating, add 500 times of 2% kasugamycin aqueous solution or 40% streptomycin wettable powder 10000 times, spray it evenly in the field, and after severe trees are scraped off, apply 300 times of 2% kasugamycin aqueous solution combined with streptomycin, which can cure the gum well.

Baidu Encyclopedia-Peach Gummosis