How to prevent heat damage from grapes

Many problems will be encountered in the process of grape planting, such as diseases and insect pests, fruit drop, grain size and so on, which are very disadvantageous to the growth of grapes. It has a great impact on the yield and quality, among which heat damage is one kind, which will burn the fruit trees. Lead to fruit cracking, fruit drop, etc., so how can we prevent heat damage in high temperature weather, especially in summer? Let's take a look at it with the editor.

1. Watering

Heat damage usually occurs in summer, because the temperature in summer is when the temperature is the highest throughout the year, and the temperature is too high, which makes the rate of water evaporation faster. Grape lack of water will cause the grape leaves to gradually turn yellow, affecting photosynthesis. At this time, we have to properly water the vines to replenish the water needed for growth. Try to avoid watering when the temperature is high, such as at noon. The best time to water is in the morning or evening. Sufficient moisture can ensure the normal color conversion of grapes and prevent abnormal ripening.

2. Topdressing

The occurrence of heat damage is closely related to the lack of nutrition in grapevines. Proper topdressing can enhance the resistance of grapevines. Attention should be paid to the amount of fertilizer when applying fertilizer. According to the situation of the tree properly determine the nutrient ratio of fertilizer, topdressing should not be partial or over-application of a certain kind of fertilizer, especially nitrogen fertilizer, nitrogen fertilizer will lead to excessive growth of branches. Not only can not prevent heat damage, but also may aggravate the degree of heat damage. Therefore, we should apply fertilizer reasonably and apply fertilizer according to the lack of nutrients in the tree to supplement the fertilizer needed for growth.

3. Thinning leaves

Everyone knows that it is very important to plant grape leaves, especially in summer, but it is necessary to do so in warmer weather. Because the proper density of branches can effectively block the sun for fruits and trees, we trim the trees according to their shape, growth, and so on. As long as you ensure the strong permeability in the orchard, you must not over-thinning the leaves. Otherwise, too few leaves will affect the photosynthesis of trees, lead to insufficient nutrition, appear yellow leaves, and increase the incidence of diseases and insect pests.

4. Bagging

Now bagging is a necessary job for almost every fruit grower, especially grapes, because bagging grapes can effectively prevent heat damage and non-physiological diseases such as burns. When the fruit is not yet fully ripe, bag it in time and try to bag it before the temperature rises. Can not be carried out when the temperature is high, after bagging to strengthen the management of the orchard, timely watering and topdressing, tree pruning and so on. It can reduce the heat damage caused by high temperature.

The above four points are the prevention and control methods to prevent the heat damage of grapes. The harm of heat damage to grapes is very great, and the yield reduction is quite mild. In serious cases, it may lead to no production. Therefore, in the process of planting, we should strengthen the management of the orchard and prepare for all emergencies. Increase the yield of grapes and increase their own economic interests. That's all for today's introduction. If you want to know more about it, please follow us again!