MySheen

Introduction to the occurrence characteristics of grape black pox

Published: 2024-11-22 Author: mysheen
Last Updated: 2024/11/22, The pathogen overwintered mainly as sclerotia on the disease spots of new shoots and tendrils. In the next spring, when the temperature was higher than 2 ℃ and the high temperature lasted for more than 24 hours, a large number of conidia were produced from the sclerotia, which were transmitted to the green young parts of grapes by Rain Water, and the conidia produced germ tubes in water and were quickly fixed to the substrate, which led to primary infection after germination. It's time to...

The pathogen overwintered mainly as sclerotia on the disease spots of new shoots and tendrils. In the next spring, when the temperature was higher than 2 ℃ and the high temperature lasted for more than 24 hours, a large number of conidia were produced from the sclerotia, which were transmitted to the green young parts of grapes by Rain Water, and the conidia produced germ tubes in water and were quickly fixed to the substrate, which led to primary infection after germination. The disease is serious in areas with many Rain Water and high humidity, and it is easy to grow or mature due to low-lying orchards, poor drainage, poor ventilation and light penetration or partial application of nitrogen fertilizer, and young grape tissues, such as young leaves, ear grains or new shoots, are susceptible to the disease in the early stage of growth.

 
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