Why does a chestnut tree only bloom but not bear fruit? How to prevent it

Chestnut is a fairly common fruit tree, and many farmers grow it in their own yards. However, during cultivation, chestnut trees often show the phenomenon of blooming but not bearing fruit, which gives farmers a real headache. So what should be done about the phenomenon of chestnut trees only blooming but not bearing fruit? Let's take a look together.

I. Reasons why chestnut trees only bloom but do not bear fruit

There are many reasons that cause chestnut trees to only bloom but not bear fruit. First, it can be caused by a poor variety; there are many chestnut varieties, and just as there are good varieties, there are also poor ones, and some varieties have difficulty bearing fruit. Second, the soil may be unsuitable for planting; chestnut prefers slightly acidic soil with a pH below 7, for example gneiss sandy soil with good permeability is more suitable, but if the soil is on the alkaline side, it will cause it not to bear fruit. Third, soil drought and lack of water cause hardening, which can also cause it not to bear fruit. Fourth, the chestnut plant has insufficient nutrients: large trees have many male flowers and the female flowers set no fruit, while small trees have many male flowers and no female flowers.

II. Preventive measures

1. Skillful fertilization

Chestnut's demand for fertilizer differs from that of other fruit trees. For mature fruiting trees, fertilizers such as boron, manganese and calcium should be increased. In spring before flowering, 300-400 grams of urea plus 200-300 grams of calcium fertilizer can be applied per tree, and 6-7 grams of boron fertilizer can be spread per sq m. During the fruit expansion period, sufficient fruit-strengthening fertilizer should be applied, and 0.7-1 kg of ternary compound fertilizer can be applied per tree. After harvesting the fruit, winter fertilizer should be heavily applied in combination with deep digging and hole expansion, and 40-50 kg of farmyard manure and 1.5 kg of calcium magnesium phosphate fertilizer can be applied per tree. In addition, spraying a mixed solution of low-concentration borax, urea and potassium dihydrogen phosphate once every 10 days can significantly increase the fruit-setting rate.

2. Skillful pruning

Chestnut likes light, so the ventilation and light transmittance of the tree body must be ensured, and vigorous extension branches and dense, thin and weak branches should be thinned out in time. In spring, shoot control and shoot tipping should be done well according to flower quantity and flower quality, to promote the sprouting of secondary shoots. Generally, 2-3 secondary shoots are kept per branch. For overly long branches or branches with a small angle, methods such as branch pulling and branch hanging can be used to encourage the branch angle to open and flower bud differentiation, balancing vegetative growth and reproductive growth.

3. Skillful fruit preservation

Chestnut is a fruit tree with cross-pollination on the same plant, so more than 2 varieties should be configured in the orchard to facilitate pollination. If the variety is single, artificial pollination can be used to preserve fruit. After the chestnut sets fruit, fruit thinning should be carried out in time to improve the commercial rate of the fruit, maintain tree vigor, and keep the fruit load balanced on each branch.

4. Skillful prevention and control of pests and diseases

Common pests and diseases of chestnut include anthracnose, clearwing moth, longhorn beetle, peach fruit borer and scale insects. Frequent high yields require timely spraying of highly efficient, low-toxicity-residue pesticides for prevention and control.

  The above is an introduction to the reasons why chestnut trees only bloom but do not bear fruit and the preventive measures. I hope it can help you. If you want to learn more related knowledge, please follow us.