What compound fertilizer is good for chestnuts? What fertilizer is best for chestnut trees?

Chestnuts are highly adaptable, drought-resistant and barren-resistant, suitable for mountain planting, simple to cultivate, and good post-management can ensure fruit yield and improve economic benefits. So what fertilizer is good for chestnuts?

What is the best fertilizer for chestnut trees?

1. Base fertilizer

Applying sufficient base fertilizer in winter is not only beneficial to restore the tree's vigor, but also can promote the differentiation of chestnut flower buds , especially the development of female flowers, making the flower buds plump and full.

The base fertilizer applied in winter is mainly organic fertilizer. 100-150 kg of decomposed compost is applied to each mature tree . For weaker trees, high-concentration compound fertilizer is applied. The fertilizer is urea and potassium fertilizer.

2. Phosphate fertilizer

The main reason why chestnuts have few female flowers is the lack of scales, which is not conducive to the growth of female flowers. Applying phosphorus fertilizer can increase the number of female flowers and increase chestnut yields. When applying phosphorus fertilizer, we can use the method of ring ditch application , apply superphosphate and organic fertilizer, and then cover with soil.

3. Microbial fertilizer

The mycorrhiza of chestnut trees can improve the root system's ability to absorb trace elements, and trace element fertilizers can increase the taste, glutinous texture, and sugar content. In addition, organic fertilizers can significantly improve the quality and yield of chestnuts , such as anti-replanting bacteria agents and molybdenum, boron, and zinc soil treatment agents.

4. Foliar fertilizer

The time for spraying chestnut foliar fertilizer varies due to the differences in natural conditions in different places. Generally, the first spraying time should be after the leaf curtain is formed. When spraying foliar fertilizer, it is best to do it before 10 am and after 4 pm to prevent the water in the fertilizer liquid from evaporating quickly and reducing the spraying effect.

The concentration of foliar fertilizer is related to the speed of fertilizer entering the leaves. Under the premise of not causing fertilizer damage, use a concentrated fertilizer solution as much as possible. In addition, the back of the chestnut tree has more stomata than the front of the leaf, the cuticle is thinner, and the fertilizer solution is absorbed quickly. It is necessary to focus on spraying the fertilizer solution on the back of the leaf, so that the back and the front of the leaf are sprayed.

5. Fruit-enhancing fertilizer

Every June and July, chestnuts need more nutrients due to flowering and fruit growth. At this time, we dig shallow trenches about 20 cm deep and wide at the drip circle of the crown, apply 50 kg of biogas slurry and 0.5 kg of potassium dihydrogen phosphate. At the same time, we also spray biogas slurry on the crown leaves every 10 days.

Which month is best for fertilizing chestnuts?

The new roots of chestnut trees begin to grow from early July until the leaves stop falling, so the best time to fertilize chestnuts is from July to August. At this time, the fertilizer effect can be better and can last for 3-4 months.

Adequate fertilizer can ensure that all nutrients produced by photosynthesis before leaf fall are returned to the trunk, the new roots of the branches are thickened, and the stored nutrients are prepared for next year's production.