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Table 1.
The critical minimum temperature for apricot in phenological phases of development, °С (average values) for the south of Russia and Zailiyskiy Alatau (Kazakhstan)
| Phonological phases of development | Temperatures in the North Caucasus (℃) | Temperatures in submountain areas of the Republic of Kazakhstan (℃) |
|---|---|---|
| Exogenous dormancy | January, I, II, –24℃ | January, III, – 28℃ February, I, II, – 24 ℃ |
| Swelling of flower buds | January, III; February, I, II, –23℃; February, III, –20℃ | February, III, – 20℃ |
| Bursting of flower buds | March, I, II, –10℃ | March, I, II, –10℃ |
| Appearance of petals | March, III, –5℃ | March, III, –5℃ |
| Blossoming | April, I, –3℃ | April, I, –3℃ |
| Primordium | April, III, –1℃ | April, III, –1℃ |
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