MySheen

How to control grape brown spot disease?

Published: 2024-11-05 Author: mysheen
Last Updated: 2024/11/05, Grape brown spot disease began to occur from the lower leaves of the plant and gradually spread upward. It can occur from June to November, and the peak period is from July to September. Rainy years and poorly managed vineyards occur severely. Control methods: 1. After autumn, thoroughly remove orchard leaves, reduce or eliminate overwintering disease sources. During the grape growing season...

Grape brown spot disease began to occur from the lower leaves of the plant and gradually spread upward. It can occur from June to November, and the peak period is from July to September. Rainy years and poorly managed vineyards occur seriously. Prevention and control methods: 1. Completely remove the fallen leaves of the orchard after autumn to reduce or eliminate the source of overwintering disease. During the period of grape growth, attention should be paid to orchard drainage, reduction of orchard humidity, timely pruning, strengthening ventilation and light transmission, and appropriate application of organic fertilizer to promote tree growth and improve plant disease resistance. two。 Master spraying in the first half of the year, and then every 10-15 days, according to the condition and climatic conditions, a total of 2-5 times throughout the year. 65% mancozeb 800-fold solution, 70% mancozeb 800-fold solution, and 1-type Bordeaux solution are used alternately.

 
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