|Fruit trees are loving the cold|
|Written by Linda Langelo, Golden Plains Area Extension|
Apple, peach and pear trees are loving this cold weather. Chilling requirement for fruit trees is the number of hours with temperatures between 32 F and 45 F during their dormant period. However, if there are days during the winter months with temperatures 60 F and above, those hours are subtracted from the overall chilling hours previously acquired.
The major factor that limits the increased production in a selection of apple varieties is the chilling requirement. Winter chilling requirements are necessary for these temperate fruit trees.
The number of hours of winter chilling enables a breakdown of internal growth inhibitors. After the growth inhibitors are broken down, this allows for normal bloom and leaf emergence in the spring.
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