In four to six-inch tall alfalfa, the treatment threshold is 50 per 100 sweeps. Ambush, Baythroid, Dimethoate, Pounce or Warrior will provide effective control. Along with cutworms, no-till fields should be scouted for true armyworm larvae. Armyworm larvae can be found in fields that were planted into a burned down small grain cover or where a small grain cover was not completely plowed under before planting. A pyrethroid will provide control of cutworms and armyworms.
Armyworms continue to be found sporadically in barley and wheat fields.
In some cases, the economic threshold level has been reached but no head clipping has been observed. Since armyworms prefer to feed on the vegetation in the lower part of the canopy, no sprays should be needed in wheat until you begin to see head clipping or if larvae begin to move up the plants feeding extensively on the foliage. As early-planted soybeans emerge, be sure to watch for bean leaf beetle and Mexican bean beetle adults and feeding damage. A pyrethroid or Sevin will provide control of both insects. Barley yellow dwarf virus continues to be seen on wheat.