Accumulated growing degree days (GDD) from Jan. 1 to May 6, using a base of 48°F. Alfalfa growers across the state should be scouting for alfalfa weevils.  Maximum feeding damage will occur from about 450 to 600 accumulated GDDs. See the May 1 CropWatch for information on scouting and control options. (Note: The -50 GDD is an anomaly in the mapping program for a select area.)