When is the Best Time to Fertilize Grapes
Sharing knowledge about the best time to fertilize grapes and the introduction of grape fertilization timing, the following is an introduction by the site editor for netizens.
Grapes are native to the西亚 region, belonging to the grape family of the grape genus and are a common fruit. Grapevines are one of the oldest tree species in the world, and due to their long history, they have been developed for various uses, such as eating raw, making dried fruit, and used for winemaking. Additionally, their roots and vines have certain medicinal values, beneficial for pregnant women to stop vomiting and ensure a healthy pregnancy. Grapes enjoy fertile soil, and the following will introduce when grapes should be fertilized.
1. Fertilizer for Bud Burst
The first fertilization should be carried out before grapevines bud, and the fertilization should be combined with deep tillage. Nitrogen fertilizer is mainly used to promote bud burst; if the tree's growth is good, with lush branches and leaves, and the environment is dry, this fertilization can be omitted to prevent the new branches from growing too much.
2. Fertilizer Before Flowering
The plant needs a large amount of nutrients before flowering, and nitrogen fertilizer should be increased at this time. Fertilizers like urea can be used, otherwise, it will affect the quality of flowering and fruiting, leading to premature blossom drop and shortened flowering period.
3. Fertilizer After Flowering
When the flowering period ends and the new shoots start growing, more nitrogen fertilizer should be applied to maintain the growth of branches and leaves and promote photosynthesis. If too much fertilizer was applied before flowering, the post-flowering fertilizer can be reduced; if enough pre-flowering fertilizer has been applied, the post-flowering fertilizer can be reduced or omitted.
4. Fertilizer for Fruit Expansion
This top-dressing can ensure the quality of the plant's fruit, reducing the occurrence of large and cracked fruits. In addition to nitrogen fertilizer, the content of phosphorus and potassium fertilizers should be increased, and urea can be mixed into the fertilizer. The amount of this fertilization can reach half of the annual fertilization amount.
5. Fertilizer for Ripening
This fertilization is very critical, usually about a month or 20 days before the fruit ripens, using liquid fertilizer containing potassium, and then applying top-dressing again before the grapes start to color, in addition to applying fertilizer to the soil, diluted phosphorus and potassium fertilizers can be sprayed directly on the leaves. If this fertilization is neglected, it can lead to a decrease in fruit quality, higher disease rates, and affect economic benefits.
6. Fertilizer After Harvesting
Fertilizer after harvesting grapes, known as post-harvest fertilizer, should use high-nitrogen fertilizers. This fertilization helps the tree recover quickly and promotes the differentiation of flower buds, ensuring the quality of the fruit for the following year.
7. Fertilizer for Overwintering
It is usually necessary to apply overwintering fertilizer for grapes in August or September, rather than waiting until the plant has completely entered dormancy. Applying fertilizer after grape harvesting is beneficial for the roots to become stronger and better for overwintering. Overwintering fertilizer generally chooses decomposed organic fertilizer and calcium fertilizer, and should also add nitrogen and phosphorus-potassium fertilizers.
The above is a detailed explanation of the best time to fertilize grapes and the introduction of grape fertilization timing, for reference and suggestions only!