Grape Pinching Technology Learning
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Grape Pinching Technology Learning
Grape pinching is the removal of the grape's growth point (tip). In some places, it is also called "topping," "pinching," and "cutting." Many growers are unaware of where to pinch the grapes. The following introduces the technical requirements and precautions for grape topping, in the hope of being helpful to growers.
Purposes of Grape Pinching
The main purpose of pinching grapes is to reduce the consumption of the growth point, concentrate nutrients on the fruit cluster, and promote the development of the fruit cluster and flower buds. For example, pinching the cluster is to promote the elongation of the fruit cluster, pinching flowers is to promote flowering and fruit setting, and the timing of flower pinching varies depending on the use.
Technical Conditions for Grape Topping
For grape topping, we can either pinch at the silk position or pinch a few leaves, divided into cluster leaf topping, four-leaf topping, or five-leaf topping. You can also spread the ear, pinch, that is, when you see that there are at least two large auxiliary ears spread out, you can pinch, and finally, when you see the flowers, you can pinch, which can promote fruit setting.
1. The leaves left after topping must be greater than 2/3 of the normal leaf area, with the size of a鹅蛋 (goose egg) as the standard. Only when it is larger than a鹅蛋, the top leaves can be self-sufficient through photosynthesis, and pinching becomes meaningful. The top (fork) can have the most dominant advantage, grow the strongest, leaves can age rapidly, and prevent downy mildew.
2. While pinching, remove any excess lateral branches, leaving only the strongest ones at the top.
Precautions for Grape Topping
1. A single branch must have more than two palm leaves to ensure photosynthesis.
2. If the tree is too weak or there are too many new shoots, you have to pick it later. If you pick it too early, you are afraid it won't grow.
3. We must pay attention to the prevention and treatment of wound diseases.
The above is a brief introduction to grape topping. Topping can effectively promote leaf growth and fruit expansion. Many high-yield grape-growing areas will carry out topping.
This article shares a comprehensive explanation of grape pinching technology learning, hoping to help you.