What is the reason for the rotten fruit of grapes after bagging?

Grape is a very popular fruit, there are a variety of varieties in our country, but also welcomed by many people. When growing grapes, we need to manage them carefully. Bagging is an indispensable technology in grape planting, which aims to prevent rotten fruit and improve fruit quality. However, sometimes after bagging, there will still be the phenomenon of grape rotten fruit, what is the reason for this? Let's take a look at it with the editor.

1. The bagging time is not right

When bagging grapes, the first thing we should pay attention to is the bagging time, which has a great relationship with the bagging effect. Generally speaking, it is better to bag grapes early, but not too early. Usually should be carried out during the grape expansion period, when the bagging effect is the best. If the bagging time is too late, then some fruits will be infected with germs, even spraying can not be completely eradicated. After bagging, it will still be active on the fruit. According to the experimental data, the rotten fruit rate of bagging during the expansion period is only 3%, and the rotten fruit rate can reach 18% after three weeks of late bagging.

2. The bagging method is not right.

When bagging, some people will choose to finish it within a week after the grapes are given medicine. As a matter of fact, the bagging effect will be affected to a certain extent. We should spray the grapes and bag them in time after the medicine is dry, preferably on the same day. If there is no rain and it is guaranteed that there will be no dew at night, it can also be postponed to two days. If the planting area is large, then it should be carried out in batches, but it must be made sure that the medicine can be bagged only after it is dry. If it is not dry, it will easily lead to rotten fruit. Do not press the fruit with your hands when bagging, and then be sure to fasten the mouth of the bag tightly to prevent Rain Water from soaking through.

3. Wrong medication

We need to sterilize the grapes before bagging them. If the medication time is inappropriate, then it is very easy to lead to rotten fruit after bagging. Be careful not to take medicine when there is dew or when the sun is strong and there is a strong wind. It is best to finish the medicine within 7: 00 to 9: 00 in the morning. Not only can avoid the dew, can prevent the sun is too strong, but also have plenty of time to bag. Then it is necessary to control the dosage and ensure the overall uniformity and the quality of the medicine. Do not spray too much, and do not leak spray phenomenon.

4. The quality of paper bags

Now there are many kinds of fruit bags on the market, such as paper bags, plastic bags and so on. Bagging grapes has many benefits, such as avoiding fruit contamination, bird damage, diseases and insect pests, etc. It is very beneficial to the yield and fruit quality of grapes. when we choose bagging, we should not just be cheap and choose plastic bags that are impervious to air and water. It is necessary to give priority to high-quality wood pulp paper bags, as long as the quality of the paper bags is slightly lower, it is very easy to cause rotten fruit in the bags.

The above is a brief introduction to the reasons for the rotten fruit after bagging. That's all for today's introduction. This article is for reference only. I hope it can help you all.