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How to treat grape fungal diseases?

Published: 2024-11-05 Author: mysheen
Last Updated: 2024/11/05, The occurrence of grape fungal diseases will seriously affect the quality and yield of grapes, and even lead to the death of spiders. How to treat the fungal disease of grape? Let's take a look at it. How to treat grape fungal diseases? 1. Downy mildew should be prevented in advance.

The occurrence of grape fungal diseases will seriously affect the quality and yield of grapes, and even lead to the death of spiders. How to treat the fungal disease of grape? Let's take a look at it.

How to treat grape fungal diseases?

1. Downy mildew

Prevention should be given priority to in advance, and once conditions conducive to the occurrence of downy mildew appear, comprehensive prevention and control should be carried out in time. Common protective fungicides are: easy to protect, copper preparation, Dasheng, mancozeb, flumalin, azoles and so on. However, copper preparation and mancozeb are not safe to use before bagging and are easy to cause drug damage, so it is not recommended to use them. The therapeutic agents are enamylmorphine, frosting urea cyanide, cyanofrozole, tebuconazole, Yikuanjing and so on. Protective agents are used in combination with therapeutic agents in prevention and treatment. It can also be treated with 2000 times of picoxystrobin, 2000 times of dimethoxin, 2000 times of flunomide, 1500 times of Bayer aldicarb hydrochloride and so on.

two。 In the early stage, prevention is mainly given priority to, mainly spraying protective fungicides, such as thiram, Pythium, iso-carbamide, etc. If the disease occurs, it can be treated with drugs such as 1000 times of pyrimidinamide, 800times of pyrimidine, 1000 times of isocarbamide, 1500 times of pyrethromycin, 1200 times of pyrimidine and so on.

3. Black pox disease

The grapes are sprayed every 10-15 days from leaf spreading to fruit coloring. Among them, spraying before flowering and 70%-80% of falling flowers is the most important. Pesticides can be selected as 1RV 0.7 Vol 200-240Bordeaux solution, 65% Dysen zinc wettable powder 500600 times, 50% carbendazim wettable powder 1000 times, or 75% chlorothalonil wettable powder 600x. Mancozeb 600 times liquid, 1.5% more than 800 times antimycin has a good effect on the prevention and treatment of black pox.

4. Powdery mildew

Pesticides can be selected as 1RV 0.7 Vol 200-240Bordeaux solution, 65% Dysen zinc wettable powder 500600 times, 50% carbendazim wettable powder 1000 times, or 75% chlorothalonil wettable powder 600x. Mancozeb 600 times liquid, 1.5% more than 800 times antimycin has a good effect on the prevention and treatment of black pox.

Therefore, drugs should be used according to different grape fungal diseases and degrees, so that we can get twice the result with half the effort.

 
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