The cause of fruit cracking of latest honey pomelo and its solution

There are many varieties of pomelo and a wide range of planting. Because of the difference of soil, temperature and humidity, the fruit cracking phenomenon is becoming more and more serious, especially in arid and barren orchards. Is there any way to reduce the incidence of grapefruit cracking? Let's take a look at it together with Xiaobian.

I. Causes of fruit cracking of pomelo

1. Water

During the fruit expansion period of pomelo, continuous drought, high temperature and insufficient water supply will cause the fruit skin to shrink. In sudden heavy rain or large amount of irrigation, the plant will absorb water quickly, the flesh tissue will absorb too fast and squeeze the pericarp, while the pericarp cells absorb water slowly, the cortex is thin and elastic, and it is easy to crack the fruit.

2. Deficiency

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

3. Improper fertilization

If there is not enough fruit fertilizer, and too much rain in the middle and late stages of plant growth, the tree body and fruit will absorb a lot of nutrients and water, resulting in uneven expansion inside and outside the fruit and causing fruit cracking.

4. Improper girdling

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

5. Hormones

The seeds and pericarp of nectar source can produce gibberellin, but the seeds of pomelo are aborted or have no seeds, so gibberellin can not be produced normally, resulting in different growth rates of pericarp and sac, asynchronous growth and development of flesh and pericarp, and easy to crack fruit.

II. Solutions

1. Improve irrigation and drainage system

In orchards should establish a perfect irrigation and drainage system, in high temperature and drought can be timely watering, and in rainy season can also be timely drainage, to ensure that orchard soil in the appropriate humidity range.

2. Keep grass properly

Grass can be left properly in the orchard, which not only keeps the soil moisture, but also improves the organic matter content of the soil, improves the buffering capacity of the soil to water, and reduces the fruit cracking caused by the expansion of the small series caused by the large absorption of cells after the rain.

3. Reasonable fertilization

To increase the proportion of organic fertilizer application, the total amount of fertilizer application in the plant growth period accounts for 80%-90% of the total amount of fertilizer application in the whole fruit period, and at the same time, the application of potassium, calcium and boron fertilizers should be increased, and the later stage should be applied as little as possible or not.

4. Reasonable girdling

Most of the girdling is carried out around the winter solstice, the width is about 0.3 cm, the xylem is not damaged, the girdling mouth moves upward year by year, and the wound is wrapped with black adhesive tape after 20 days of girdling.

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