The bollworm or corn earworm
- Source:
- Farmers' bulletin (United States. Dept. of Agriculture) ; no. 872 1917
- Year:
- 1917
- Subject:
- life cycle (organisms), Heliothis armigera -- Control, insect pests, seasonal development, tillage, control methods, cultural control, spraying, trap crops, and Helicoverpa zea
- Format:
- 16 p. : ill., 1 map ; 23 cm.
- Language:
- English
- Publisher:
- U.S. Dept. of Agriculture
- Collection:
- Organic Roots Collection