What is the cause of grape fruit drop?

There will always be fruit drop in the process of grape growth, which has a great impact on the economic benefits of growers. There are many reasons for its fruit drop, the natural environment, lack of nutrients will cause such a phenomenon, Xiaobian here to give you several reasons.

1. Natural fruit drop

The survival of the fittest in nature is also applicable to the vine, so natural fruit drop is a more common problem, and each time the fruit drop is small, and has less impact on the economy. The reason is that in the process of fruit tree growth, the nutrition received by some grape grains is not enough to maintain its growth, nutrition is obtained by well-developed fruit grains, and these poorly developed fruit grains will fall off automatically with the passage of time. To some extent, this also has certain benefits, which will allow other grapes to get more nutrients, you can choose high-quality seedlings to alleviate this situation.

2. Lack of nutrients

The fruit quantity of grape is generally relatively large, coupled with the reason of planting area, it is impossible for growers to be meticulous to each parent, so the fruit drop caused by lack of nutrients naturally appears. The type of fertilizer needed in each stage of its growth process is different, if this situation occurs more frequently, then growers have to adjust their own types of fertilization. Generally speaking, fruit drop is related to nitrogen fertilizer, so you can pay attention to the use of nitrogen fertilizer. If there are multiple clusters of fruits above, farmers should immediately change the fertilization.

3. Diseases and insect pests

Fruit drop caused by diseases and insect pests is a more serious one. Once the disease occurs, it is basically affected in large quantities, which should be paid more attention to. Canker disease, water irrigation disease, downy mildew, anthrax and so on are all diseases that easily lead to fruit drop. Growers should find out the types of disease and prescribe the right medicine to the case. The fruit drop caused by the disease is relatively easy to identify, and there will be anomalies on the surface of the fallen fruit, such as rot, soft rot and so on. In terms of insect pests, we should pay attention to things like red spiders, which are easier to find on grapevines. In addition to prescribing the right medicine to the case, choosing a variety with good disease resistance is also a good way of prevention.

4. The light is too strong

Too strong crossing the line is often caused by improper operation of growers when pruning, which is generally not very serious. When grapevines grow, the branches and leaves will be thicker, if not pruned, it will lead to a large number of nutrients can not be supplied to the fruit. It is recommended that growers should control the pruning time after the fruit comes out, so it is convenient for pruning and it is not easy to cause wrong pruning. The pages above each fruit string should not be trimmed as far as possible, but can be slightly removed to allow light to pass through occasionally, which can not only effectively prevent strong temperature, but also meet the lighting needs of grapes.

In fact, there are some other reasons for grape fruit drop, such as the fact that the variety is not in line with the growing environment. We try to choose their own local varieties, in the case of output, etc., focus on their own local actual conditions, such as cold resistance, heat resistance, disease resistance, according to their own needs.