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Frost Risk for Almond Growers

March 3, 2017

With temperatures forecasted to drop, there is a frost risk for almonds growers. Regardless of whether this forecast becomes reality or not, it’s important to always be ready to prevent frost damage.

According to the University of California Cooperative Extension, there are a few things to keep in mind:

  • Types of frost.There are 2 major types of frost events that occur throughout California – advection frost and radiation frosts.
  • Almond susceptibility to frost.The further the tree advances out of dormancy, the more sensitive to frost it becomes.
  • Frost damage prevention. Growers can manage soil moisture and ground cover to help reduce frost damage from a radiation frost event. You can utilize active frost protection by introducing air movement or heat. The use of micro sprinklers and solid-set sprinklers also provide frost protection.

Additionally, the University of California Cooperative Extension recommends mowing cover crops or residual vegetation to allow radiant heat from the soil to move into the canopy, and using a sprinkler system to apply water to warm the orchard.

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