What are the characteristics of grape dormancy?

I. Conditional dormancy period (related dormancy period) The main buds and preparation buds in winter buds are in a static state without sprouting. This period is around August. Under greenhouse conditions, adopting measures such as short cutting, top lifting, and picking leaves can promote the germination of buds and start a new growth cycle.

Second, the physiological dormancy period (natural dormancy period) This period is about September to October. At this time, winter buds do not germinate even if optimum growth conditions are given. Once grape enters a natural dormant state, it needs to accumulate about 1000 hours below 7.2 degrees Celsius for low temperature accumulation to release dormancy. The difference in the low temperature requirements for breaking dormancy for different species is quite different.

Third, forced dormant winter buds have passed the natural dormancy period, as long as the temperature is appropriate, winter buds can germinate. Under the conditions of protected areas, after the natural dormancy is lifted, the insulation of the sheds is carried out so that the winter buds can be germinated and bloomed earlier, allowing the grapes to mature earlier and provide the morning market.

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