Control method for greasy yellow spot of citrus

Abstract

The invention discloses a control method for greasy yellow spot of citrus. The method includes the following steps that 1, a garden is cleaned in winter, wherein shaping and pruning are combined, bogbranches and insect-plague branches are removed, infected leaves, infected branches, diseased fruits and falling leaves are collected, branches and leaves are pruned, the waste is buried centralizedly, lime is prayed, soil is disinfected, and the pH value of soil is adjusted; 2, cultivation management is strengthened, wherein an organic fertilizer is applied to old trees which are poor in vigor and suffer from serious diseases over the years, and the crown can achieve ventilation and light penetrating and has proper foliage density; 3, pesticide control is achieved, wherein a methoxyacrylate bactericide is used once from mid-May to June, and one of prochloraz, prochloraz-manganese chloride complex and anisole is sprayed once in mid-July and once in mid-August. The method can effectively control the greasy yellow spot of citrus, the leaves and fruits of the citrus are prevented from being affected by the greasy yellow spot of citrus, the tree vigor is enhanced, the fruiting rate is increased, the fruit appearance is optimized, the selling value of citrus fruits thus can be improved, and loss of profits is reduced.

Description

technical field [0001] The invention relates to the field of agriculture, in particular to a method for preventing and treating citrus fat spot macular disease. Background technique [0002] Greasy spot yellow spot disease is a fungal disease. The pathogenic bacteria of fat spot yellow spot disease will survive the winter in the diseased leaves on the tree or the fallen leaves, and can also survive the winter on the branches, usually through the mycelium in the diseased leaves from April to September Infect healthy branches and leaves, and the pathogen has latent infectivity. It invades the leaves from the stomata of young shoots and leaves, and can be latent for 2-4 months. June-July is the high incidence period. It mainly occurs on spring shoot leaves. Needle-shaped yellow dots appear on the back of the damaged leaves at the beginning, and then expand into round and irregular yellow spots, which bulge toward the back of the leaf and present a herpetic shape. Several or do...

AI Technical Summary

Problems solved by technology

Therefore, when citrus trees are infected with arborescent yellow spot disease, the tree vigor will be affected, the fruit setting rate will be reduced, and the appearance of the fruit will be affected at the same time, and the marketability will be reduced.