The Library
Modeling the evolution of glyphosate resistance in barnyardgrass (Echinochloa crus-galli) in cotton-based production systems of the Midsouthern United States
Tools
Bagavathiannan, Muthukumar V., Norsworthy, Jason K., Smith, Kenneth L. and Neve, Paul (2013) Modeling the evolution of glyphosate resistance in barnyardgrass (Echinochloa crus-galli) in cotton-based production systems of the Midsouthern United States. Weed Technology, 27 (3). pp. 475-487. doi:10.1614/WT-D-13-00013.1 ISSN 0890-037X.
Research output not available from this repository.
Request-a-Copy directly from author or use local Library Get it For Me service.
Official URL: http://dx.doi.org/10.1614/WT-D-13-00013.1
Abstract
Glyphosate-resistant (GR) weeds have been a prime challenge to the sustainability of GR cotton-based production systems of the midsouthern United States. Barnyardgrass is known to be a high-risk species for evolving herbicide resistance, and a simulation model was developed for understanding the likelihood of glyphosate resistance evolution in this species in cotton-based systems. Under a worst-case scenario of five glyphosate applications in monoculture GR cotton, the model predicts resistance evolution in about 9 yr of continuous glyphosate use, with about 47% risk by year 15. A unique insight from this model is that management in response to GR Palmer amaranth in this system (a reactive response) provided a proactive means to greatly reduce the risks of glyphosate resistance evolution in barnyardgrass. Subsequent model analysis revealed that the risk of resistance is high in fields characterized by high barnyardgrass seedbank levels, seedling emergence, and seed production per square meter, whereas the risk is low in fields with high levels of postdispersal seed loss and annual seedbank loss. The initial frequency of resistance alleles was a high determinant of resistance evolution (e.g., 47% risk at year 15 at an initial frequency of 5e−8 vs. 4% risk at 5e−10).
Item Type: | Journal Article | ||||||||
---|---|---|---|---|---|---|---|---|---|
Subjects: | Q Science > QK Botany | ||||||||
Divisions: | Faculty of Science, Engineering and Medicine > Science > Life Sciences (2010- ) | ||||||||
Library of Congress Subject Headings (LCSH): | Glyphosate, Echinochloa crusgalli | ||||||||
Journal or Publication Title: | Weed Technology | ||||||||
Publisher: | Weed Science Society of America | ||||||||
ISSN: | 0890-037X | ||||||||
Official Date: | July 2013 | ||||||||
Dates: |
|
||||||||
Volume: | 27 | ||||||||
Number: | 3 | ||||||||
Number of Pages: | 13 | ||||||||
Page Range: | pp. 475-487 | ||||||||
DOI: | 10.1614/WT-D-13-00013.1 | ||||||||
Status: | Peer Reviewed | ||||||||
Publication Status: | Published | ||||||||
Access rights to Published version: | Restricted or Subscription Access | ||||||||
Funder: | BASF-Aktiengesellschaft, Monsanto Company, Dow AgroSciences LLC, Syngenta Crop Protection, Bayer CropScience, Cotton Incorporated |
Request changes or add full text files to a record
Repository staff actions (login required)
View Item |