Plants are sprayed with water at night to absorb the heat of freezing thereby keeping the plant warm and avoiding the overnight freeze.
One of the concerns that farmers have during winter is hot to keep their crops from freezing. When the crop freezes, yield of the crop could be affected in the long run.
It is common to spray the plant with water before night so that it can take away the heat of freezing thereby keeping the plant warm and avoiding the overnight freeze.
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