Method for controlling physalospora piricola nose of apple trees

Abstract

The invention discloses a method for controlling physalospora piricola nose of apple trees, belongs to the field of methods for controlling diseases of fruit trees, and aims to provides a method being convenient and easy to operate, low in cost, and good in disease resistance for controlling diseases of apple trees. The method includes scraping burls and old raised barks on a trunk after leaves fall in autumn, and coating 5 Be lime sulphur on scraped portions; coating 5Be lime sulphur on the scraped portions again in next spring; spraying a bordeaux mixture and 0.2 Be lime sulphur in an alternating mode after flowers on the apple trees fall until the first ten-day period of September, wherein the interval time between spraying of the bordeaux mixture and spraying of the 0.2 Be lime sulphur is 15 to 20 days. The lime sulphur is boiled by the following raw materials, by weight, 1 part of calcium oxide, 10 parts of sulphur and 100 parts of water. By using the method for controlling physalospora piricola nose of apple trees, diseases do not generate resistance, the effective rate of disease resistance and pest killing reaches up to approximately 90%. The invention provides the method for controlling physalospora piricola nose of apple trees.

Description

technical field [0001] The invention relates to a method for preventing and controlling fruit tree diseases, in particular to a method for preventing and controlling apple tree ring spot. Background technique [0002] Apple ring spot can damage all levels of branches and fruits of apple trees. On the branches, at the beginning of the disease, reddish-brown lesions are formed with the lenticels as the center. Later, the lesions protrude in the middle and become tumor-like, with cracked edges and upturned saddle-shaped. After many lesions are connected, the epidermis of the branches appears very rough, so it is also called rough skin disease. On fruit, the disease begins near maturity, is severe at harvest, and continues during storage. The typical symptom on the fruit is the formation of nearly round brown lesions centered on the lenticels, which may cause fruit rot in severe cases. [0003] Apple tree is a high-incidence tree species of ring spot, which will bring huge ec...

AI Technical Summary

Problems solved by technology

[0004] At present, carbendazim, rehabilitative agents, polyoxin, etc. are usually used for prevention and treatment. Although they have certain effects, they are not ideal in terms of lethality to lesions, dehydration of lesions under stress, and promotion of new tissue growth in diseased parts.