Grape cracking occurs when the fruit is colored to maturity in the later stages of berry growth. Grape cracking severely reduces its commercial and economic benefits. The causes and prevention methods of cracking will now be introduced as follows:

First, the reason for cracking fruit: grape cracking fruit, one is the long drought or rain, so that the soil water content increases sharply, the cells in the fruit quickly swell and swell, and the peel expands slowly, which leads to cracking. The second is caused by pests and diseases. Such as white rot, black bean disease and red spiders, aphids and other damage, causing fruit cracks.

Second, cracking fruit prevention: 1 to maintain the berry growth period, especially the fruit coloring to maturity, soil moisture is in a sufficient and stable situation, pay attention to timely drainage when rainfall, to ensure smooth drainage. 2 Rational use of drugs to prevent pests and diseases. Do a good job in measuring pests and diseases, seize the key to prevention and control, and spray drugs in time. To prevent white rot and black bean disease, 50% carbendazim WP 800 times solution or methyl thiophanate 1000 times solution can be sprayed. The control spider mites can be sprayed with a net 1000 times solution. The control of aphids can be sprayed with cloth 1500 times liquid and the like. 3 Spray plant growth regulator. 2-3 weeks before fruit harvesting, spraying 0.2% calcium chloride, or 0.2% amino acid calcium, or 0.5% high-energy calcium, or spray-day-2116, can effectively prevent grape cracking.

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