What causes kiwifruit splitting? Causes and control measures
Kiwifruit splitting is a common phenomenon during production, and it occurs more frequently when novice growers cultivate them, bringing relatively large economic losses to growers. So what causes kiwifruit splitting? How should it be controlled? Let's find out together.
I. Causes of splitting
1. Improper variety selection
There are many varieties of kiwifruit, and they are somewhat linked to the biological characteristics of the variety. If the local growing conditions are not suitable for planting a given variety, then fruit development will be affected, and splitting may occur.
2. Improper water and fertilizer management
During planting, if there is drought in the early stage and then the watering amount is suddenly increased later, the flesh absorbs water and expands rapidly, directly splitting the skin open and causing splitting.
3. Calcium and boron deficiency
Calcium deficiency in the fruit can also cause splitting, usually starting from the growing point. In plants, calcium can only move relying on the pulling force produced by leaf transpiration, so calcium supplementation should be combined with ground fertilization and foliar spraying for a better effect. In addition, boron deficiency in the fruit can also cause splitting. Boron can increase the toughness of the fruit skin to prevent splitting, and can also transport sugars into the berries, thereby increasing berry sugar content and reducing acidity.
4. Improper cultivation management
When orchard ventilation is poor and light is weak, kiwifruit splitting can also be caused. In addition, poor soil drainage and irrigation conditions, severe soil acidification, soil hardening, and improper pest and disease control can all possibly cause splitting.
II. Control measures
1. Select good varieties
Because different varieties of the same fruit tree differ in genetic characteristics, ripening period and environmental conditions, varieties suitable for local planting should be selected when planting, and varieties with strong splitting resistance should be chosen as much as possible.
2. Do a good job in field management
Do a good job in water management, especially when dry and wet climate changes are relatively large, water or topdress fertilizer in time to avoid splitting. In addition, increase the application of calcium, boron and potassium fertilizers to increase fruit thickness and toughness and strengthen tree vigor. During the fruit expansion and ripening period, spray fluid calcium or active calcium once every 7-10 days, continuously spraying 2-3 times, which can reduce the splitting phenomenon. In addition, do a good job in pest and disease control, improve the planting environment, and increase the organic matter in the soil.
3. Use swelling agents reasonably
The abuse of plant growth regulators is also one of the important causes of splitting, so swelling agents should be used reasonably, or not used at all.
The above is an introduction to the causes of kiwifruit splitting and control measures. I hope it can help you. If you want to learn more related knowledge, please stay tuned to us.