博文

目前显示的是 十二月 10, 2018的博文

The most troubling grapevine diseases

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There are more than 30 known grape diseases. Among them, sour rot, anthrax and powdery mildew are the most common diseases. If we know more about grape diseases, we can improve grape growing environment, promote grape yield and improve economic benefits.















Grape Sour Rot Sour rot is usually caused by the mixture of acetic acid bacteria, yeasts, fungi, Drosophila larvae and other microorganisms. It is a serious disease that can reduce grape yield by 30%-80%.Symptom There are rotten grapes, if it is bagged grapes, under the bags there is a dark moist, while there are vinegar flies around the rotten ears, emitting acetic acid taste. White maggots can be seen in the rotten fruit. As the rotten juice flows out, the place where the juice flows will rot. Site of occurrence:Fruit Occurrence stage:After grape sealing→When grapes are colored Best prevention time:Staining to Maturity Grape Powdery Mildew It is a common disease of many plant species and belongs to the fungal disease of the genus Leptospi…