–by Dr. Jeff Whitworth and Dr. Holly Schwarting
Alfalfa weevil feeding seems to be slowing as pupation has started, but there are quite a few larvae still active.
The photo below is of our insecticide plots which were treated 8 days after the surrounding alfalfa field, thus the dramatic visual difference insecticide timing can make.
Also, there are some aphids present in the alfalfa. Dr. Stu Duncan, KSU Agronomist, reported some spotted alfalfa aphids from the AltaVista area and we have a few in our plots in Dickinson Co. Pea aphids have been present since early March and continue to be found in relatively low numbers.
