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1. Corn earworm as an enemy of vetch

Author:
Luginbill, Philip , 1884- , Beyer, A. H. (Adolph Harvey) , 1882-
Subject:
life cycle (organisms) , Helicoverpa zea , Vicia , natural enemies , Winthemia , parasitoids , biological control agents , control methods , biological control , Heliothis zea Control , Vetch Diseases and pests
Physical description:
19 p. : ill. ; 23 cm.
Additional Author(s):
Luginbill, Philip , 1884-Beyer, A. H. (Adolph Harvey) , 1882-
Collection:
Organic Roots Collection
Series:
Farmers' bulletin