The Latest Solutions for Excessive Vegetative Growth Without Flowering in Lychee

Lychee is an important economic fruit tree with a relatively wide planting area in China, but during cultivation, excessive vegetative growth without flowering can occur. This phenomenon seriously affects the flower bud differentiation of lychee and can even lead to a total crop failure. So how should it be solved? Let's take a look at the detailed introduction.

1. Insufficient light

For every plant to grow normally, it must be in a temperature environment suitable for its own growth. In this environment, the higher the temperature, the faster it grows. However, when light is insufficient, the higher the temperature, the thinner and weaker the growth, which is unfavorable for later yield.

Solution: For excessive vegetative growth caused by this situation, temperature should be well controlled while increasing light so that growth returns to normal.

2. Excessive moisture

Water and humidity are also indispensable for growth. They can promote gibberellin synthesis in the plant, but when gibberellin content is too high, it causes cytoplasm expansion and elongation, resulting in excessive vegetative growth. Especially during the growth of lychee winter shoots in winter, it causes vigorous leaf growth, leading to delayed flowering and fruiting.

Solution: Water should be managed reasonably. In the rainy summer season, drainage measures should be taken well to maintain appropriate soil moisture, but long-term drought should also be avoided. The amount of water used should be determined according to the lychee variety and local actual conditions.

3. Unbalanced fertilization

Nitrogen fertilizer mainly promotes plant growth. Many fruit growers apply large amounts of nitrogen fertilizer in order to speed up the growth of lychee plants. Once the proportion of nitrogen fertilizer in the soil is too high, root absorption of other nutrients is blocked, resulting in excessive vegetative growth, thereby affecting normal flowering and fruiting.

Solution: Fertilization should be reasonably balanced, with more organic fertilizer applied. When improper fertilization causes excessive vegetative growth, a low concentration of monopotassium phosphate can be sprayed to control the vigorous growth.

4. Chemical control of excessive vegetative growth

Excessive vegetative growth in lychee brings some harm. In mild cases, it reduces yield; in severe cases, it causes total crop failure. Therefore, chemicals can be used to control excessive vegetative growth during planting management. Common growth retardants include paclobutrazol, chlormequat, mepiquat chloride, and daminozide. Spraying them on leaves can inhibit cytoplasm expansion and elongation, thereby inhibiting growth. Common growth promoters include ethephon, abscisic acid, and induced resistance agents. They can inhibit indoleacetic acid auxin in the plant, achieving a short-term growth inhibition effect.

The above is an introduction to solutions for excessive vegetative growth without flowering in lychee. We hope it can help you. To learn more related knowledge, please stay tuned to us.