Corn earworm as an enemy of vetch
- Source:
- Farmers' bulletin (United States. Dept. of Agriculture) ; no. 1206 1921
- Year:
- 1921
- Subject:
- life cycle (organisms), Heliothis zea -- Control, Vetch -- Diseases and pests, Helicoverpa zea, Vicia, natural enemies, Winthemia, parasitoids, biological control agents, control methods, and biological control
- Format:
- 19 p. : ill. ; 23 cm.
- Language:
- English
- Publisher:
- U.S. Dept. of Agriculture
- Collection:
- Organic Roots Collection