Generally speaking, bagging has a good promoting effect on the protection of grape fruit quality. However, exceptions also occur. Many growers encounter a lot of rotten fruit problems when they grow grapes in bagging. Why is this so? Doesn't it mean that bagging can protect the grapes? How can rotten fruits occur? In fact, this is mainly related to bagging technology and later management.

1. The bagging time is wrong

As we all know, the effect of bagging prematurely is usually not very good. The correct bagging time can generally be a little earlier, and it is appropriate to expand the grape fruit. But bagging too late will not work. Some grapes have been infected with germs, and it is difficult to eradicate them by spraying. The germs are still multiplying in the bag, which will cause rotten fruit. The bagging time needs to be selected according to different varieties and different purposes. Generally, the purpose of disease prevention should be after the fruit thinning is in place. It is advisable to bagging early but not too early.

2. The bagging method is wrong

Many farmers' friends immediately bagged the grapes after the grapes were sprayed. In fact, this method is still lacking consideration. The correct way is to wait for the liquid to dry after spraying and then bagging. If the area of ​​grape orchard is large, you can spray as much medicine as you can according to your actual conditions.

Reasons for the rotten fruit of grape bagging

3. The spraying time is wrong

Remember, you cannot spray when there is dew, or when the sun is shining at noon or when there is strong wind. Generally, spraying is most suitable when the dew is dry and the sun is not too strong. And when spraying, pay attention to spray evenly, don't spray too much, let alone miss spray.

4. The quality of paper bags

The commonly used bagging for grape fruit trees mainly include newspaper bags, pure wood berry bags, plastic film fruit bags, etc., but each type of bag has certain advantages and disadvantages. Generally, growers make targeted choices based on the characteristics of different bags and the growth characteristics of their own grape varieties. The bagging that causes rotten fruit usually uses inferior paper bags produced by informal manufacturers, paper bags made by newspapers, and paper bags that have been used once.

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