A few newly hatched alfalfa weevil larvae were found in Fayette County alfalfa late last week, but tip feeding was not evident. Degree day accumulations are reaching totals where feeding damage should become apparent soon if the insect is at damaging levels. The best weevil management decisions are based on stem sampling (http://www2.ca.uky.edu/entomology/entfacts/ef127.asp). If this information is not available, then control is recommended when feeding damage can be seen on 25% to 50% of the plant tips, and there are 2 or more live larvae per stem.
By Lee Townsend, Extension Entomologist