We are now in the fruit-setting period of grapevines, which is also an important period for grapevine management. How to fertilize grapevines properly affects the later yield of the vines. Here, Xiaonong shares with everyone some management issues concerning the fruit-setting period of grapevines.

What fertilizers are needed during the fruit-setting period?

The main goals during the fruit-setting period are to promote fruit enlargement and reduce the occurrence of diseases. The fertilizers needed at this time include nitrogen fertilizer, phosphorus fertilizer, and potassium fertilizer, and potassium dihydrogen phosphate should also be sprayed on the leaves to promote fruit enlargement and ripening.

Specifically, after entering the fruit-setting period, the first thing to note is the need for reasonable flower thinning and fruit thinning to avoid affecting later fruit growth, reduce the probability of disease occurrence, and improve fruit quality.

Fertilization: In the early stage of fertilization during the grapevine fruit-setting period, nitrogen fertilizer is mainly used. Nitrogen fertilizer promotes nutrient absorption by the grapevine and promotes fruit growth. About 30 kg of urea fertilizer can be spread per mu of vineyard. At the same time, pay attention to supplementing phosphorus fertilizer and potassium fertilizer to promote fruit enlargement. Superphosphate and potassium sulfate can be used, with about 30 kg of each applied per mu. Pay attention to supplementing calcium fertilizer. These fertilizers are generally applied once about every month.

Also spray insecticide to reduce the occurrence of diseases. After spraying the insecticide, bags can be used to cover the grapes to improve grape quality.

What was described above is the fertilization method for grapevines during the fruit-setting period. In the late fruit-setting period of grapevines, some slight changes should be made. The early stage mainly focuses on fruit enlargement, while the later stage requires consideration of the taste and color of the grape fruit. After all, only grapes of good quality can fetch a good price. At this time, a potassium dihydrogen phosphate solution can be sprayed on grapevine leaves to promote good fruit growth, along with the application of urea and potassium sulfate fertilizer.

In addition, attention should be paid to the prevention and control of pests and diseases during the grape fruit-setting period. For example, diseases such as white rot, downy mildew, and anthracnose. Usually apply more organic fertilizer, improve light penetration and ventilation of the leaf surface, promptly discover diseased branches and diseases, and handle them promptly, etc.

The above content comes from the original work of Science Xingnong. We hope your grapevines achieve a bumper harvest.