Agriculture & Natural Resources

IPM- Small Grain Sampling Guidelines

Growth Stage: Seedling (fall), Tillering – Boot Stage (spring)
Pest Sampling Method
Aphids In the fall, examine 1 linear foot of row in 10 sites; estimate the number of aphids per foot of row
Cereal leaf beetle  In the spring,  begin checking for eggs and small larvae on 10 tillers/stems at 10 sites throughout a field, count the number of eggs and larvae per 100 tillers
Growth Stage: Head Emergence to Harvest
Aphids Examine 10 grain heads in 10 sites until the early dough stage, count the number of aphids per head, also note beneficial insect activity
Cereal leaf beetle Examine 10 stems in 10 locations through the early dough stage for larvae and estimate percent defoliation
True Armyworm Starting in early May, examine 5 linear foot of row in 10 sites for the presence of larvae, be sure to examine the area at the base of the plants as well as under crop debris and weeds since the larvae are nocturnal.
Grass Sawfly For initial detection in late April – early May, take 5 sweeps in 5 sites especially along field margins; Once larvae are detected examine five linear foot of row in 10 sites for the presence of larvae; Since larvae feed on the plants during the day, shake the plants in the 5 linear foot of row to dislodge larvae from the plants into the row middles.