Comparative Toxicity of Insecticides for Corn Rootworm (Coleoptera: Chrysomelidae) Larvae in a Soil Bioassay1
- 1 June 1982
- journal article
- research article
- Published by Oxford University Press (OUP) in Journal of Economic Entomology
- Vol. 75 (3) , 489-491
- https://doi.org/10.1093/jee/75.3.489
Abstract
Toxicity levels of insecticide registered for corn rootworm control were establisher with a laboratory soil bioassay. There was nearly a 15-fold range in LC50 and LC95 values among compounds for third-stage larvae of western corn rootworm (WCR), Diabrotica virgifera virgifera LeConte, and up to a fivefold difference within compounds when comparing susceptibility of the first- and third-stage larvae of western corn rootworm. Third-stage larvae of southern corn rootworm (SCR), Diabrotica undecimpunctata howardi Barber, required at least an equal dosage of insecticides and were as much as threefold more tolerant to them than WCR larvae of the same stage.This publication has 0 references indexed in Scilit: