How to translate text using browser tools
17 October 2015 Insecticide Efficacy and Timing for Control of Western Bean Cutworm (Lepidoptera: Noctuidae) in Dry and Snap Beans
L. A. Goudis, C. L. Trueman, T. S. Baute, R. H. Hallett, C. L. Gillard
Author Affiliations +
Abstract

The western bean cutworm, Striacosta albicosta (Smith) (Lepidoptera: Noctuidae), is a recent pest of corn, dry, and snap beans, in the Great Lakes region, and best practices for its management in beans need to be established. Insecticide efficacy and application timing field studies, conducted in 2011–2013, determined that lambda-cyhalothrin and chlorantraniliprole were capable of reducing western bean cutworm feeding damage in dry beans from 2.3 to 0.4% in preharvest samples, and in snap beans from 4.8 to 0.1% of marketable pods, respectively. The best application timing in dry beans was determined to be 4–18 d after 50% egg hatch. No economic benefit was found when products were applied to dry beans, and despite high artificial inoculation rates, damage to marketable yield was relatively low. Thiamethoxam, methoxyfenozide, and spinetoram were also found to be effective at reducing western bean cutworm damage in dry bean to as low as 0.3% compared to an untreated control with 2.5% damaged pods. In snap beans, increased return on investment between CAD$400 and CAD$600 was seen with multiple applications of lambda-cyhalothrin, and with chlorantraniliprole applied 4 d after egg mass infestation.

The Authors 2015. Published by Oxford University Press on behalf of Entomological Society of America. All rights reserved. For Permissions, please email: journals.permissions@oup.com
L. A. Goudis, C. L. Trueman, T. S. Baute, R. H. Hallett, and C. L. Gillard "Insecticide Efficacy and Timing for Control of Western Bean Cutworm (Lepidoptera: Noctuidae) in Dry and Snap Beans," Journal of Economic Entomology 109(1), 188-194, (17 October 2015). https://doi.org/10.1093/jee/tov285
Received: 27 February 2015; Accepted: 7 September 2015; Published: 17 October 2015
JOURNAL ARTICLE
7 PAGES

This article is only available to subscribers.
It is not available for individual sale.
+ SAVE TO MY LIBRARY

KEYWORDS
feeding damage
larva
Phaseolus vulgaris
Striacosta albicosta
RIGHTS & PERMISSIONS
Get copyright permission
Back to Top