What is the best fertilizer for grape vines?

Grapevine fertilization time

Grape vines can be given bud fertilizer, weak branch fertilizer, young fruit enlargement fertilizer (fruit strengthening fertilizer), sugar-enhancing and coloring fertilizer, and foliar fertilizer.

Grape vines should be top-dressed 3 to 4 times a year, mainly with quick-acting fertilizers. The first topdressing should be done before budding, mainly with nitrogen fertilizers. The second topdressing can be done after fruit setting, with human manure or compound fertilizers containing nitrogen, phosphorus and potassium, or urea. The third topdressing needs to be done when the fruit is colored, mainly with phosphorus and potassium fertilizers.

The fourth top dressing is after the fruit is picked. In order to restore the tree vigor and promote the growth of branches, phosphorus and potassium fertilizers need to be applied.

What fertilizer to use for grape vines

1. Grapevines need to be fertilized with nitrogen, which plays a great role in their growth and development. It can promote the development of side branches, increase the number of branches and leaves, and promote flowering and fruiting.

2. Grape vines need to be fertilized with phosphorus and potassium fertilizers to restore tree vigor, promote the differentiation of flower buds, improve its cold resistance, and enhance the quality of the fruit.

3. Grape vines need to be applied with boron fertilizer and zinc fertilizer, which will help increase their fruit setting rate, improve the nutritional status of grapes and increase yield.

Grapevine fertilization method

1. Apply base fertilizer: When planting grape vines, you can apply base fertilizer to the soil, mainly organic fertilizer, and apply rotted manure or compost per acre.

2. Top dressing: Grape vines are mainly fertilized during the growing season to promote the differentiation of flower buds, promote plant growth and fruit development, and increase the fruit setting rate.

3. Germination fertilizer: Apply before germination begins in spring, mainly quick-acting nitrogen fertilizer. Water immediately after topdressing to promote uniform germination.

4. Pre-flowering fertilizer: Applying nitrogen, phosphorus and potassium compound fertilizer to the grape vines one week before flowering can promote the differentiation of flower buds and prolong the flowering period.

5. Fruit-enlarging fertilizer: After the flowers of the grape trees fall, you can apply a combination of accelerated nitrogen fertilizer and compound fertilizer to increase its fruit set rate and the yield will be increased.

6. Color-enhancing and sugar-enhancing fertilizers: Before the grape fruits change color or at the beginning of color change, apply mainly phosphorus and potassium fertilizers.

Notes on fertilizing grapevines

The base fertilizer must be fully decomposed before application to avoid burning the roots. Watering is required in time after fertilization to avoid fertilizer damage. Fertilizer should be applied in appropriate amounts, not too much, and raw or concentrated fertilizers should not be used. Fertilizer should not be applied to the same place every year to avoid affecting the growth of the root system.