The reason of grape soft fruit

When the grape is ripe and harvested in the final stage, the grape often softens and then falls off. there are many reasons for this phenomenon. But the final results are all the same, seriously affecting the quality and yield of grapes, making grapes lose their commercial value. So what is the cause of grape soft fruit? Come and have a look with the editor.

1. Improper fertilization

The amount of fertilizer needed in the whole growing period of grape is relatively large, but there are certain requirements for the use of fertilizer in the growing stage of grape. For example, if the grape expansion to the color of the period over-application of compound fertilizer will be easy to produce fertilizer damage, so that the roots burn out and die, unable to provide nutrients, resulting in nutrients. And if the partial application of nitrogen fertilizer in order to increase production, the grapes will absorb too little calcium fertilizer, resulting in excessive growth of leaves, excessive absorption of nutrients, lack of calcium in fruit, and soft fruit.

2. Climatic reasons

According to the results of the experimental investigation, the incidence of grape soft fruit is generally the highest in overcast and rainy weather. And if you encounter such weather when the grapes are colored, the grapes will decrease their photosynthesis due to lack of light. There is not enough sugar in the grape to form the soft fruit of the grape. After the cloudy and rainy weather, Rain Water caused a serious loss of fertilizer, not enough nutrients and water, will also form softening.

3. Planting is too dense

Grape planting density should not be too thin and too dense, too thin lead to excess nutrients of grapes, branches grow too long, the formation of split fruit. However, too dense will lead to excessive density of branches and leaves, block each other, the lower leaves have no light, can not carry out photosynthesis, and the ventilation and permeability become worse. On the other hand, branches, leaves and fruits need a lot of nutrients, the decline of photosynthetic capacity will lead to insufficient nutrition, branches and leaves compete for nutrients with fruits, which is the softening of nutritional disorders in fruits.

4. Hang too many fruits

In order to pursue high yield, many friends do not care about the flowers and fruits of grapes, and do not sparse the fruits and repair the flowers. The size of the fruit becomes larger, and the fruit beyond the bearing range is hung on the branches, and there are no nutritious branches. Leave as many fruits as there are flowers on the branches, resulting in a decrease in the ratio of leaf to fruit, which is seriously beyond the bearing range of the vine. As a result, the leaves did not have sufficient nutrition to supply the fruit, and the sugar content of the fruit decreased greatly, which finally led to the acidity and softening of the grape.

There are many reasons leading to grape softening, such as diseases and insect pests, waterlogging, hormones and many other factors, grape growth process is very sensitive and fragile. The orchard should be managed frequently, water and fertilizer should be used properly, and the right medicine should be given to the case according to the situation of grapes. Rational use of all kinds of pesticides. For more information about grapes, please continue to follow the pro-farm network!