What are the reasons for grape blossom and fruit drop?
Do you know about this? Here are the green plant and flower knowledge regarding the reasons for grape blossom and fruit drop, which will be explained in detail by the editor below.
What are the reasons for grape blossom and fruit drop?
In the process of grape cultivation, in addition to pest and disease issues, many fruit farmers are troubled by the phenomenon of blossom and fruit drop, which is also a concern for everyone because it determines whether grape cultivation can achieve high yields.
Natural shedding
Natural selection also applies to many fruit trees, so natural fruit drop is a common issue, and since the amount of fruit dropped each time is small, the economic impact is minor. The reason for this is that during the growth of fruit trees, some grape berries do not receive enough nutrition to maintain growth. Nutrition is obtained by well-developed grape berries. Over time, these poorly developed grape berries will drop automatically. To some extent, it has certain benefits, allowing other grapes to obtain more nutrition. We can select high-quality seedlings to alleviate this condition.
Pest and disease
Fruit drop caused by pests and diseases is a serious issue. Once a disease occurs, it will be affected by a large number of pests and diseases. We should pay more attention to this aspect. Rot disease, fruit rot disease, downy mildew, and T-J disease are all diseases that can easily cause fruit drop. Growers should identify the type of disease and choose the appropriate medication based on the situation. Fruit drop caused by diseases is relatively easy to identify, and the surface of the dropped fruit will show abnormalities such as rotting and soft rot. For pests, attention should be paid to red spiders, which are more easily found on grapevines. In addition to applying the right medicine, choosing disease-resistant varieties is also a good preventive method.
Too much light
Excessive pruning is caused by improper operations during pruning by growers, and it is generally not very serious. As grapes grow, the branches and leaves become more dense, and if not pruned, many nutrients cannot be supplied to the fruit. It is recommended to control the pruning time after the fruit has emerged to facilitate pruning and avoid incorrect pruning. Try not to cut off the page on each fruit cluster. You can open it a little to let light occasionally pass through. This can effectively prevent high temperatures and meet the lighting needs of grapes.
Nutrient deficiency
Generally speaking, the yield of grape fruit is relatively high. Due to the relationship with planting area, growers cannot pay attention to every parent, so fruit drop due to nutrient deficiency naturally occurs. The amount of fertilizer required at each stage of growth is different. If this situation occurs more frequently, growers must adjust their fertilizer types. Generally speaking, fruit drop is related to nitrogen fertilizer. You can pay attention to the use of nitrogen fertilizer. If there are many undeveloped berries on the mother plant, farmers should change the fertilizer immediately.
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