Armyworm is the caterpillar stage of certain moths and can occur in large numbers especially after good rain follows a dry period. During the day armyworms shelter in the throats of plants or in the soil and emerge after sunset to feed. They like to feed on young leaf tissue, giving the leaf margins a tattered appearance. Heavy feeding leaves only the midrib of the leaf. The most serious damage results from the habit of the older larvae of feeding on the green stem just below the head of maturing barley. The severed heads fall to the ground and cannot be harvested. Control is rarely warranted except where large numbers attack small plants.
Lawn armyworm in pastures, lawns and field crops
Insect management information about lawn armyworms, incluidng life cycle, management, control methods, biological control and predators
Common, northern and sugarcane armyworms
A description of the common armyworm in winter cereals, occurence of infestations and damage caused.
Dayfeeding armyworm in pasture, maize and sorghum
Dayfeeding armyworm in pasture, maize and sorghum description, including identification, control, damage and life cycle
Description of lesser armyworm, including identification, control, damage and pest status
- Crop Insects: The Ute Guide Northern Grain Belt.
- Pests of Field Crops and Pastures: Identification and Control. Editor: P.T. Bailey.