How to Prune Grapevines in Summer
Today's small experience sharing: tips on how to prune grapevines in summer, let's take a look together!
How to Prune Grapevines in Summer
In summer, grapevines enter a period of vigorous growth. Useless buds and too many inflorescences can lead to poor ventilation and light penetration, greatly affecting fruit quality and yield. Therefore, it is necessary to harvest grapes in summer. So, what are the misunderstandings in summer pruning of grapevines? How to operate?
Misunderstandings in Summer Pruning of Grapevines
Farmers often believe that operations should be carried out when new buds grow to 7-8 leaves and inflorescences can be seen. However, grape buds consume a lot of water and nutrients, and can cause the branches to become thin and weak, reducing yield and seriously affecting economic benefits. Therefore, the best method for cutting grapes in summer is to rub off the buds, which can be divided into three stages.
Specific Operations for Summer Pruning of Grapevines
1. The first summer pruning is carried out before the buds sprout.
At this time, it is clear that the earliest sprouting buds will sprout on some weak branches left from winter pruning, and some old plants will sprout buds from the base, so now is the best time to rub off the buds. This can be done manually without any instruments. Buds at the base of the branches and vines, buds on thin and weak branches, poorly developed buds, and thin and weak tips on double buds should be removed. This summer pruning can eliminate 60% to 70% of excess buds.
2. The second summer pruning is usually carried out when the new shoots grow to 7-8 leaves and the size and strength of the inflorescences are clearly visible.
This summer pruning should be combined with binding new branches. In the specific operation process, the basic number of new shoots should be determined based on factors such as grape variety, soil fertility, tree vigor, and planned yield. If the soil fertility of the grape hedges is good, the tree vigor is strong, and the planned yield is 2500kg, with an average cluster weight of 600g, it is advisable to leave 10 new shoots per square meter of grid.
3. The third summer pruning is usually combined with the second binding of new shoots.
Because the second summer pruning often leaves more branches, this summer pruning should leave new shoots with inflorescences and remove fruitless branches. When there are many fruiting branches, weak branches should be removed, strong branches retained, and dense branches removed. Fewer large clusters should be left and more small clusters should be retained. For varieties with an average cluster weight less than 400g, 18-20 new shoots can be left per square meter; for varieties with an average cluster weight of more than 400g, 8-12 new shoots per square meter are recommended.
The above are the misunderstandings and operations for summer pruning of grapevines. Summer pruning of grapevines is a final adjustment of the number of branches left on the basis of winter pruning and is an important task that determines grape yield and quality. Farmers must pay attention to this.
The above is the specific content on how to prune grapevines in summer, and copying is prohibited without permission!