What is the best fertilizer for grapes?

Grape fertilization time

1. Apply fertilizer before the grape roots enter the second growth peak. In the northern region, apply fertilizer in September and October each year, and in the south, apply fertilizer between October and November. This is beneficial to the root system to promote new roots and increase the nutrient reserves of the tree.

2. The annual root system of grapes is weak, so you can apply less chemical fertilizers and apply some organic fertilizer every two months to promote its healthy growth.

3. For grape topdressing, generally quick-acting nitrogen fertilizer is applied more than ten days before flowering, and potassium fertilizer is mainly applied in early July. The purpose of topdressing is different at different times.

What fertilizer to use for grapes

When fertilizing grapes, base fertilizer and topdressing should be mainly nitrogen fertilizer, which can promote more vigorous growth of leaves, but the proportion of fertilizer should be appropriate to avoid single fertilization.

  Generally, grape processing is charged, which mainly supplies the basic nutrients needed by grapes throughout the growing period, creates good soil conditions for crop growth and development, and can also improve the soil and improve soil fertility.

Grape fertilization method

1. Base fertilizer: Apply base fertilizer to grapes in early to mid-September, 6-8 cubic meters (5,000-10,000 kg) of decomposed pig manure, chicken manure, cow manure, etc. per mu, and then add 15 kg of diammonium phosphate.

2. Top dressing: The first top dressing of grapes should be carried out before germination, mainly with N fertilizer. The amount of fertilizer applied should account for 1/2 of the annual top dressing amount of N fertilizer. Dig a 10-15 cm deep narrow trench 30-40 cm away from the plant. After fertilizing, water and cover the soil.

Grape fertilization precautions

The soil nutrient leaching in grape planting is relatively serious, so fertilization should be carried out in small amounts and multiple times. Pay attention to reducing the amount of irrigation. Base fertilizer needs to be applied within 1 month after the fruit is harvested.