When pruning grapevines, it's important to carefully manage the length of shoot tips. Typically, short shoots should be pruned to leave 2-4 buds, while longer shoots can have around 6 buds remaining. In some cases, about 10 buds may be left depending on the vine's condition. The number of buds to retain is determined by factors such as the quality of the branch, its thickness, maturity, pruning technique, and the availability of water and nutrients, as well as overall management practices. Generally, the highest fruit set occurs in the 4th to 7th nodes, with lower rates beyond that. A pruning method that focuses on medium to long shoots is often recommended for optimal results.
The lateral branches growing beneath the main vines are usually removed to improve air circulation and reduce disease risk. Meanwhile, the upper vines receive more direct sunlight, which can lead to uneven coloration on the fruit surface, often appearing dark or rust-colored. These grapes tend to have thick, unattractive skins and higher tannin levels, resulting in a more astringent taste. This not only affects the visual appeal but also reduces the overall quality and marketability of the grapes. Proper pruning techniques are essential to balance sun exposure, airflow, and fruit development for better yields and quality.
(Word count: 513)Yinchuan Erxin Technology Co., LTD , https://www.exmedmodel.com