When to Bag Open-Air Grapes
If you want to understand when to bag open-air grapes and the detailed explanation of the timing and methods of grape bagging in the field of green plants and flowers, the following article will provide you with a detailed answer.
The timing of bagging open-air grapes needs to be determined based on actual operations, usually done after trimming the fruit clusters. Prepare well before bagging, and it's best not to use ordinary newsprint or decorative paper. The selected paper bags should have good breathability and antibacterial properties. Remove diseased and insect-infested fruits, spray with fungicides, and let them air dry before bagging. Moisten the opening of the bag during bagging to facilitate the operation. Let's learn more about it in detail.
1. Bagging Time
Bagging is usually done 15-20 days after the grapes have physiologically set fruit. Early bagging is possible, as late bagging can easily lead to anthracnose infection. Bagging can start when the fruit is the size of a soybean and after the clusters have been thinned and trimmed. Bagging after trimming the clusters can stabilize the growth of the berries. It's best to do this on a sunny day with weak sunlight, either between 9-11 am or 2-6 pm, avoiding the noon hours.
2. Bagging Preparation
Choose paper bags that are breathable, antibacterial, have high light transmission, and can排水. Avoid using ordinary newsprint or decorative paper, which have poor resistance. Trim the fruit clusters, adjust the load on the fruiting branches, and remove insect-infested, diseased, and inner berries. If there is a high possibility of disease in the orchard, it is necessary to spray the entire plant with fungicides and let it air dry before bagging.
3. Bagging Method
Moisten the opening of the paper bag about 5-6 centimeters with water to make it easier to tie the bag opening tightly. Try to fully open the bag, cover the entire cluster, and close the opening at the fruit stem, exposing as little of the stem as possible. Use fine wire to secure the bag opening. Note that all bagging should be completed within 2 days, and avoid touching the clusters with your hands during the bagging process to maintain their natural cleanliness.
4. Post-Bagging Management
After bagging, take protective measures for the new shoots and leaves, fertilize in a timely manner, and control the use of nitrogen fertilizer; drain water in a timely manner to avoid accumulation of water during the rainy season. Prune the branches and leaves in the summer to increase overall ventilation and light transmission.
5. Bag Removal Management
Bag removal can be done 10-15 days before harvest. If the quality of the paper bags is good enough, they can be removed during harvest. First, prop open the bottom of the paper bag and avoid directly removing it to prevent insect and bird damage to the fruit.
The above information on when to bag open-air grapes and the detailed explanation of the timing and methods of grape bagging are small bits of knowledge and experience. I hope this article can provide you with some help!