Causes and control measures of kiwifruit cracking

Kiwifruit cracking is a common phenomenon in the process of kiwifruit production, which occurs more frequently in novice growers, which brings greater economic losses to growers. So what causes kiwifruit cracking? How to prevent and cure it? Let's get to know it.

First, the cause of fruit cracking

1. Improper seed selection

There are many varieties of kiwifruit, and there is a certain relationship between the biological characteristics of kiwifruit varieties. If the local planting conditions are not suitable for planting this variety, then the fruit development will be affected and fruit cracking may occur.

2. Improper water and fertilizer

During planting, it was dry in the early stage and suddenly increased in the later stage, which led to the rapid expansion of pulp absorption and direct cracking of the pericarp, resulting in fruit cracking.

3. Lack of calcium and boron

Calcium deficiency in fruit can also cause fruit cracking, which generally begins to crack from the growing point, and calcium in plants can only move by relying on the pulling force produced by leaf water transpiration, so calcium supplement should be combined with ground fertilization and leaf fertilizer spraying, and the effect is better. In addition, when the fruit is boron deficient, it can also cause fruit cracking. Boron can increase the toughness of the pericarp to prevent fruit cracking, and can also transport sugar to the fruit grains, thus increasing the sugar content and reducing the acidity.

4. Improper cultivation and management

In the orchard, poor ventilation, weak light will also lead to kiwifruit cracking, and poor soil drainage and irrigation conditions, serious soil acidification, consolidation, improper control of diseases and insect pests may also cause fruit cracking.

II. Prevention and control measures

1. Select improved varieties

Because of the different genetic characteristics, maturity and environmental conditions of different varieties of the same medium fruit trees, we should choose the varieties suitable for local planting and the varieties with strong crack resistance as far as possible.

2. Do a good job in field management

Do a good job in water management, especially when the dry and wet climate changes greatly, timely watering or topdressing to avoid fruit cracking, and increase the application of calcium, boron and potassium fertilizer to increase the thickness and toughness of the fruit and enhance the tree potential. During the fruit expansion and ripening period, the phenomenon of fruit cracking could be reduced by spraying liquid calcium or active calcium every 7-10 days for 2-3 times. In addition, we should do a good job in pest control, improve the planting environment and increase the organic matter in the soil.

3. Rational use of expansion agent

The abuse of plant growth regulators is also one of the important reasons for fruit cracking, so it is necessary to use expansion agents reasonably or not.

The above is the introduction of kiwifruit cracking causes and control measures, hope to help you, want to know more related knowledge, please pay attention to us.