Article
 

Suppression of Hop Looper (Lepidoptera: Noctuidae) by the Fungicide Pyraclostrobin

Public Deposited

Downloadable Content

Download PDF
https://ir.library.oregonstate.edu/concern/articles/ms35tb26j

Descriptions

Attribute NameValues
Creator
Abstract
  • The hop looper, Hypena humuli Harris, is a reemergent pest of hop that often requires treatment to mitigate crop damage. In 4 yr of field trials, plots treated with fungicides were observed to sustain less hop looper defoliation compared with nontreated plots. Further investigation revealed that abundance of hop looper and associated defoliation were reduced when the fungicide pyraclostrobin was applied in late July to early August. Two other fungicides possessing active ingredients in the same chemical family (quinone outside inhibitor) did not reduce abundance of hop looper or its defoliation. Pyraclostrobin is efficacious against powdery mildew diseases, and the application timing evaluated in these studies corresponds with a period of juvenile susceptibility of hop cones to the disease. Use of fungicides containing pyraclostrobin at this time may have the ancillary benefit of reducing hop looper damage, potentially obviating the need for broad-spectrum insecticides later in the season. Follow-up studies are warranted to determine whether pyraclostrobin may inhibit other lepidopteran species.
  • Keywords: Integrated pest management, Nontarget impact, Humulus lupulus
  • Keywords: Integrated pest management, Nontarget impact, Humulus lupulus
Resource Type
DOI
Date Available
Date Issued
Citation
  • Woods, J. L., & Gent, D. H. (2014). Suppression of Hop Looper (Lepidoptera: Noctuidae) by the Fungicide Pyraclostrobin. Journal of Economic Entomology, 107(2), 875-879. doi:10.1603/EC13546
Journal Title
Journal Volume
  • 107
Journal Issue/Number
  • 2
Rights Statement
Funding Statement (additional comments about funding)
  • Support for these studies was provided by U. S. Department of Agriculture-Agricultural Research Service-Current Research Information System (USDA-ARS-CRIS) Project 5358-21000-046-00D.
Publisher
Peer Reviewed
Language
Replaces

Relationships

Parents:

This work has no parents.

Items

Thumbnail Title Date Uploaded Visibility Actions
file details WoodsJoannaBotanyPlantPathologySuppressionHopLooper.pdf 2017-07-26 Public Download