PRGs Help Blueberries Recover from Freeze Damage

Blueberry growers in the Southeast can suffer greatly reduced yields due to freeze damage. They also have been challenged with poor pollination and fruit set and small fruit size. According to a new article in Growing Produce, plant growth regulators like gibberellic acid (GA) have helped alleviate the damage caused by freezes. Field trials indicate that applying GA to select blueberry cultivars after a freeze helped improve fruit set. Researchers note that GA is not ideal for all varieties and that application of GA should be based on the level of flower damage, not the air temperature. For more information about the use of GA to mitigate freeze damage, and other recommended methods of preventing freeze damage, read “How PGRs Rescue Berries After Spring Freeze.”