Over-night temperatures on May 22 to 23 dipped to -2 to -3 oC in many parts of Ontario. Cereal crops are hardy to light frosts. Leaf tissue on plants that have not hardened off will withstand temperatures of -4 oC or lower before the cells will freeze and damage occurs, making late spring frosts of little consequence.
Written by Scott Banks
Areas of Focus: •Crop rotation and field crop management systems, their interaction and impact on production in the short and long term •Contact for the Ottawa-Rideau Regional Soil and Crop Improvement Associations •Co-lead of the yearly Eastern Ontario Crop Diagnostic Day and Eastern Ontario Crop Conference