How to Grow Kyoho Grapes: A Detailed Guide to Planting Methods and Key Technical Points
Kyoho grapes originally came from Japan and were introduced to China in the 1990s. Unlike other grapes, Kyoho grapes are relatively difficult to manage because they suffer from severe flower drop and have a low fruit-setting rate. However, they have high value: Kyoho grapes contain abundant moisture and a high sugar content, and they contain a powerful antioxidant that can effectively combat aging and clear free radicals from the human body. Although they are difficult to manage, they still occupy a considerable planting area in our country. Below, I bring you information on the management of Kyoho grapes.
1. Fertilization and Irrigation
Kyoho grapes have a large demand for fertilizer and water, and their requirements for nitrogen, phosphorus, and potassium fertilizers are especially strict. Experiments have shown that 100 kg of berries requires 1:0.3:1 kg of nitrogen, phosphorus, and potassium fertilizers. Therefore, appropriately increasing the application of organic fertilizer and foliar fertilizer in winter can effectively improve fruit quality. However, it should be noted that Kyoho grapes grow vigorously, so during the rapid growth period, attention must be paid to the amount of nitrogen fertilizer used. If too much nitrogen fertilizer is applied, it will cause excessive vegetative growth, leading to flower and fruit drop, and it will also affect the yield of the following year. During this period, an appropriate amount of phosphorus and potassium fertilizer should be added. From after Kyoho grapes bud until the later berry coloring stage, sufficient water must be ensured for the grapes. Irrigation should be stopped half a month before harvest.
2. Training and Pruning
Grapes must be trained and pruned; otherwise, excessively long vines and overly fast growth will lead to poor fruit development. For training, trellis frames and T-shaped frames can be used for cultivation, and each plant must not have more than 3 main vines. During winter pruning, medium and long canes should be pruned, with about seven fruiting mother canes per square meter, and they need to be staggered vertically to ensure good air and light penetration between the canes. New shoots should be pinched in a timely manner, and on secondary shoots at least one leaf should be retained for repeated pinching.
3. Flower and Fruit Thinning
Many people find when finally harvesting Kyoho grapes that the quality of the grapes is not very good, which reduces their commercial value. In fact, the main reason for the reduced quality is excessive yield. Yield should be appropriately controlled, with the yield per mu at around 2000 kg. The tree vigor should be adjusted through flower and fruit thinning, keeping the tree vigor moderate, with the goal of achieving stable and divided production. After the fruit expands, small berries, diseased berries, cracked berries, and other undesirable berries should be removed in a timely manner.
4. Fruit Bagging
Nowadays, fruit bagging technology has become increasingly mature, because fruit bagging can effectively reduce the incidence of disease and also ensure that the fruit is not harmed by pesticides, birds, bees, and other external factors. It can enhance the glossiness of the fruit skin, keep the fruit brightly colored, and improve quality. Bagging can begin after the grapes experience physiological fruit drop. When the grapes grow to the size of soybean grains, thin the flowers and fruits, then spray thiophanate-methyl. Once the pesticide dries, bagging can begin, and the bags can be removed half a month before harvest.
The above are the planting methods for Kyoho grapes. When planting Kyoho grapes, you cannot grow them the same way as ordinary grapes, because Kyoho grapes have relatively severe flower drop, a low fruit-setting rate, and relatively serious problems such as fruit cracking and fruit drop. Therefore, everyone must master the correct cultivation method to achieve the goal of high and abundant yield, and you also must not leave all the fruit on the plant just for the sake of high yield. If you want to learn more related information, please continue to follow Qinnong Network!