Detailed Explanation of the Causes of Fruit Cracking in Jujube Trees and Control Measures

During the growth of jujube trees, fruit cracking often occurs, which seriously affects the appearance and taste of the jujubes and also brings certain economic losses to fruit growers. So what causes fruit cracking in jujube trees? What should be done? Let's take a look together with the editor.

I. Causes of Fruit Cracking

1. Excessive Rain

During the ripening period of jujubes, due to excessive rainfall, the flesh expands rapidly, while the growth rate of the skin cannot keep up with the expansion rate of the flesh, and the skin is directly split open.

2. Excessive Application of Chemical Fertilizers

China has a history of more than 30 years of chemical fertilizer application. As the amount of chemical fertilizers applied increases, the varieties also increase. They change the soil structure, reduce the organic matter content, cause soil compaction, and lead to a deficiency of soluble calcium that can be absorbed by the jujube tree roots in the soil, thereby causing fruit cracking.

3. Nutrient Imbalance

The growth of jujubes cannot do without trace elements. Minerals are closely related to jujube fruit cracking. If jujube trees lack elements such as nitrogen, potassium, calcium, boron, and magnesium, fruit cracking may occur, especially when the soil is deficient in calcium, fruit cracking is very likely to occur.

4. Water Deficiency and Drought

Calcium deficiency is the main cause of fruit cracking in jujube trees. Most arid areas in northern China are deficient in calcium. Soil drought is not conducive to the activity of microorganisms, and calcium in the soil must undergo microbial metabolism to form soluble calcium that can be absorbed by the plant, thus leading to fruit cracking in the plant.

II. Control Measures

Based on the analysis of the causes of fruit cracking, measures can be taken from the perspectives of soil moisture and calcium supplementation to prevent and control fruit cracking. First, the orchard can be covered with grass. Cover a layer of 20 cm of chopped straw around the root system. The best time for grass covering is from June to October. It can preserve warmth and moisture, and is also conducive to the reproduction of microorganisms, increases soluble calcium in the soil, and increases organic matter content. When the soil is dry, water it in time to keep the soil moist, which can effectively prevent fruit cracking. When the plant is deficient in calcium, the calcium element needed by the plant can be supplemented by foliar spraying to reduce fruit cracking.

The above is an introduction to the causes of fruit cracking in jujube trees and control measures. We hope it can help you. If you want to learn more related knowledge, please stay tuned to us.