Armyworms in Wheat Fields By Wayne Bailey

In wheat, treatment for true armyworm is justified when an average of four or more non-parasitized, half-grown (3/4 to 1 1/4 inch) or larger worms per square foot are present during late spring or when 2 to 3 percent or more of seed heads are cut from stems by this pest. If an insecticide application is necessary on wheat, use one of the following insecticides.

Insecticide	Product rate/Acre	Preharvest Interval
*Lannate LV	0.75 to 1.5 pt	7 days grain harvest or 10 days forage or hay harvest
*Mustang Max	1.76 to 4.0 fl oz	14 days grain, forage, or hay
*Penncap-M	2 to 3 pts	15 days grain harvest or graze
*Proaxis	2.56 to 3.84 fl oz	Do not apply within 30 days of harvest.
Sevin XLR Plus	2 to 3 pts	21 days grain or straw or 7 days forage or hay
Tracer 4SC	1 to 3 fl oz	21 days grain or straw or 14 days forage or hay
*Warrior	2.56 to 3.84 fl oz	Do not apply within 30 days of harvest
*designates a restricted use pesticide Follow all label directions, precautions, and restrictions.

Wayne Bailey, Entomologist
573-882-2838