It is important that frost control begins on the day of application of the dormancy breaker (hydrogen cyanamide or budbreak uniformity product), regardless of the frost control system used.
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Frost damage occurs when nucleation begins, namely the intracellular formation of ice crystals. With the preventive application of products capable of lowering the freezing point of tissues, the aim is to delay intracellular nucleation and reduce its triggering temperature, as well as to improve cell membrane stability and repair before, during and after the event.
These tools make it possible to prevent, mitigate and repair damage caused by low temperatures.
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After a frost event, it is necessary to carry out disease control treatments. It should be considered that we are in the stages when the cherry tree is most susceptible to diseases, particularly bacterial canker.
During this period, several risk factors coincide: the increase in the Pseudomonas population, the presence of free water, frost events and the progressive opening of plant tissues, which makes plants even more vulnerable to disease pressure.
Therefore, after these rainfall events, it is necessary to adopt the appropriate management practices to preserve the health status of orchards.
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Image source: Agro Asesoria - Puig and Brota, 2022
Patricio Morales
Agro Asesoria
25 Apr 2023
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