Causes of fruit cracking of honey pomelo and its solution

There are many varieties of honey pomelo and a wide range of planting, but because of the differences in soil, temperature and humidity, the phenomenon of fruit cracking is becoming more and more serious, especially in dry and barren orchards. So is there any way to reduce the incidence of fruit cracking in pomelo? Come and have a look with the editor.

First, the cause of fruit cracking of honey pomelo

1. Moisture

During the expansion period of honey pomelo fruit, continuous drought, high temperature and insufficient water supply will cause the outer skin of the fruit to contract. When there is sudden heavy rain or a large amount of irrigation, the plant will absorb water quickly, and the pulp tissue will absorb too fast and squeeze the pericarp. On the other hand, the pericarp cell absorbs water slowly, the skin is thin and the elasticity is poor, and the fruit is easy to crack.

2. Element deficiency

Honey pomelo will also cause fruit cracking when lack of potassium, calcium, boron and other elements. excessive application of phosphorus fertilizer and potassium fertilizer during flowering period will cause peel thinning and fruit cracking; calcium is an important part of pectin. Pectin can improve the cell wall strength and pulp tissue hardness, and reduce the rate of fruit cracking. Boron deficiency will cause glue flow, sponge layer shrinkage and fracture, resulting in fruit cracking.

3. Improper fertilization

If there is not enough strong fruit fertilizer, and there are too many Rain Water in the middle and later stage of plant growth, topdressing is too late, the tree and fruit will absorb a lot of nutrients and water, resulting in uneven internal and external expansion of the fruit, resulting in fruit cracking.

4. Improper girdling

After girdling, the wound heals slowly, the transport of nutrients is blocked in the young fruit stage, and the growth of the young fruit is limited. after healing in the middle and later stage, the transport of nutrients increases suddenly, which will also cause fruit cracking.

5. Hormone

The seeds and peel of honey source can produce gibberellin, but the seeds of honey pomelo are aborted or there are no seeds, so gibberellin can not be produced normally, resulting in different growth rates of peel and capsule, non-synchronous growth and development of pulp and pericarp, and easy to crack fruit.

II. Solutions

1. Improve the drainage and irrigation system.

A perfect drainage and irrigation system should be established in the orchard, which can be watered in time in high temperature and drought, and can also be drained in time in the rainy season to ensure that the orchard soil is within a suitable range of humidity.

2. Keep grass properly

Grass can be kept properly in the orchard, which can not only maintain soil moisture, but also increase the content of soil organic matter, improve the buffering capacity of soil to water, and reduce the fruit cracking caused by the expansion of Xiaobian caused by a large amount of cell absorption after rain.

3. Rational fertilization

To increase the proportion of the application of organic fertilizer, the total amount of fertilizer applied in the plant growth period accounts for 80% of the total amount of fertilizer applied in the whole fruit period, and the application of potassium, calcium and boron fertilizer should be increased at the same time, with little or no fertilization as far as possible in the later stage.

4. Reasonable girdling

The girdling was mostly carried out before and after the Winter Solstice, and the width was about 0.3cm. It went deep into the xylem without harming the xylem. The mouth of the girdle moved upward year by year. After 20 days of girdling, the wound was wrapped with black tape.

The above is the introduction of the causes and solutions of pomelo cracking. I hope it can help you. If you want to know more about it, please follow us.