Comparative Suitability of Whorl Stages of Sweet Corn for Establishment by Larvae of the Corn Earworm 1 , 2 , 3
- 1 October 1976
- journal article
- research article
- Published by Oxford University Press (OUP) in Environmental Entomology
- Vol. 5 (5) , 955-958
- https://doi.org/10.1093/ee/5.5.955
Abstract
The suitability of several growth stages of whorl-stage sweet corn for establishment of artificially introduced larvae of the corn earworm, Heliothls zea (Boddle), was studied. The frequency of establishment and survival increased proportionally with increasing maturity of the plant at the hme of infestation. Least survival (indicated by the presence of larvae at mid-green tassel) occurred at pre- to early-whorl, and maximum survival occurred at mid- to late-whorl. Natural regulation of larval populations was affected by rainfall and by a tachanid parasite, Archytas marmoratus (Townsend).This publication has 0 references indexed in Scilit: