What is the cause of the latest grape fruit drop?

Grape in the process of growth will always appear fruit drop situation, this is a situation that has a greater impact on the economic benefits of growers. There are many reasons for its fruit drop. Natural environment and insufficient nutrients will cause such phenomenon. Xiao Bian will give you several reasons here.

1. Natural fruit drop

Nature's survival of the fittest also applies to grape trees, so natural fruit drop is a relatively common problem, and the amount of fruit dropped each time is small, and the economic impact is less. The reason is that some grape fruits receive insufficient nutrition to maintain their growth during the growth process of fruit trees, and the nutrition is obtained by well-developed fruit grains. With the passage of time, these poorly developed fruit grains will automatically fall off. To some extent, this has certain benefits, which will allow other grapes to obtain more nutrients, and can be selected for high-quality seedlings to alleviate this situation.

2. Insufficient nutrients

Grape fruit is generally relatively large, coupled with the planting area of the reason, growers can not be detailed to each parent, so nutrient deficiency caused by fruit drop naturally appeared. The amount of fertilizer needed at each stage of its growth is different. If this happens frequently, the grower will have to adjust his fertilizer type. Generally, fruit drop is mostly related to nitrogen fertilizer. We can pay attention to the use of nitrogen fertilizer. If there are multiple strings of fruit grains with poor development on the mother body, farmers should immediately change the fertilization.

3. Diseases and pests

Fruit drop caused by diseases and insect pests is a more serious kind. Once the disease occurs, it is basically affected in large quantities. Additional attention should be paid to this aspect. Canker disease, water irrigation disease, downy mildew, anthracnose and so on are relatively easy to cause fruit drop diseases, growers should find out the type of disease, the right medicine. Fruit drop caused by disease is relatively easy to identify, the surface of the fruit will have abnormalities, such as rot, soft rot and so on are basically disease fruit drop. Insect pests should pay attention to red spiders and the like, which are easier to find on grapevines. In addition to the right medicine, choosing a variety with good disease resistance is also a good way of prevention.

4, the light is too strong

Over line is too strong due to improper operation of growers during pruning, generally not very serious. Grape vine in growth, branches and leaves will be more dense, if not pruned, will lead to a large number of nutrients can not be supplied to the fruit above. It is recommended that growers control the pruning time after the fruit is out of the grain, so that it is convenient for pruning, and it is not easy to cause wrong shearing. The page above each fruit string should not be trimmed as much as possible. It can be opened slightly to allow light to pass through occasionally. This can effectively prevent strong temperature and meet the light requirements of grapes.

Grape fruit drop in fact, there are other reasons, such as varieties and growth environment does not meet this situation. We try our best to choose varieties suitable for our local area. Under the condition of yield, we should focus on our local actual conditions, such as cold resistance, heat resistance, disease resistance, etc., according to our own needs.