What are the reasons for the low fruit setting of grapes
Main content of this article: Experience in the aspect of green plant maintenance on why grapes have a low fruit setting rate, which will be introduced by the editor of this site.
What are the reasons for the low fruit setting of grapes
In recent years, more and more people are planting grapes, which is mainly related to the promising prospects of grape cultivation. However, the growth of grapes is also influenced by factors such as temperature, light, water, and fertilizer. Recently, many fruit farmers have reported a low fruit setting rate in grapes. What are the causes? How to prevent and control? Let's learn together now.
Disease and Pest Control
Diseases and pests are also one of the main reasons for the falling of flowers and fruits in grapes. Therefore, it is necessary to prevent the occurrence of diseases and pests to improve the fruit setting rate of grapes. The main diseases and pests in grapes are downy mildew, leafhoppers, etc. After each harvest, it is necessary to thoroughly disinfect the orchard in time and collect and clean the remaining diseased branches and fruits. It is important to keep away from the orchard, and low-lying orchards should be cultivated and disinfected regularly to remove pathogen eggs, reduce the number of pathogens, and lower the incidence rate.
Reasonable Fruit Retention
When planting, most people think that the more fruits, the better, so there is no reasonable thinning of flowers and fruits in fruit trees. This not only fails to increase fruit yield but also leads to poor grape quality and reduces the tree's vigor. As a result, the pollination rate of flower buds in the second year decreases, the accumulation of nutrients in the branches is reduced, affecting the flowering and fruit setting rate, leading to the falling of flowers and fruits. Therefore, reasonable fruit retention should be carried out to control the number and ensure quality, reducing the falling of flowers and fruits.
Preventing Excessive Growth
Once grape branches show vigorous growth, it will affect the flowering and fruit setting rate of grapes because the vigorous branches directly consume most of the nutrients in the grapes. Therefore, once such branches are found, they should be pruned immediately.
Ensuring Nutrition
Ensuring sufficient nutrition for grape growth is a key factor in improving grape growth and fruit setting rate. After the orchard is harvested, enough basic fertilizer should be applied, and the amount should be at least half of the annual required fertilizer. At least three topdressings should be carried out in a year. The first is to apply an appropriate amount of nitrogen fertilizer before germination. The second topdressing can be used during the fruit expansion period, with decomposed manure as fertilizer. The last one is mainly some trace elements when fruits start to color. Pay attention to the application of nitrogen fertilizer.
The above points are key to improving the fruit setting rate of grapes and can be further added. In the usual planting process, please pay attention to these issues.
The detailed explanation of the reasons for the low fruit setting of grapes shared in this article is for reference and suggestion only!