With the threat of the deadly Huanglongbing citrus greening disease coming to the state, California citrus growers are doing all they can to keep the disease vector asian citrus psyllid out of their orchards; however, these treatments are also taking out natural enemies for red scale, causing a resurgence of the pest in California orchards. Watch this brief video as researcher David Holden explains, and read more about it in California Fresh Fruit Magazine.
