Tolerance of Glyphosate-Resistant Maize to Glyphosate Plus MCPA Amine Is Influenced by Dose and Timing
Joint Authors
Nurse, Robert E.
McNaughton, Kris
Gillard, Chris L.
Sikkema, Peter H.
Soltani, Nader
Source
Issue
Vol. 2015, Issue 2015 (31 Dec. 2015), pp.1-5, 5 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2015-07-27
Country of Publication
Egypt
No. of Pages
5
Main Subjects
Abstract EN
There is little information on tolerance of glyphosate-resistant maize to glyphosate plus MCPA amine as influenced by dose and timing under Ontario environmental conditions.
A total of seven field trials were conducted at various locations in Ontario, Canada, in 2011–2013 to evaluate tolerance of field maize to tank mixes of glyphosate (900 g a.e./ha) plus MCPA amine (79, 158, 315, 630, 1260, 2520, or 5040 g a.e./ha) at either the 4- or 8-leaf stage.
The predicted dose of MCPA amine that caused 5, 10, and 20% injury was 339, 751, and 1914 g a.e./ha when applied to 4-leaf maize but only 64, 140, and 344 g a.e./ha when applied to 8-leaf maize, respectively.
The predicted dose of MCPA amine that caused 5, 10, and 20% reduction in shoot dry weight of maize was 488, 844, and 1971 g a.e./ha when applied to 4-leaf maize and only 14, 136, and 616 g a.e./ha when applied to 8-leaf maize, respectively.
The predicted dose of MCPA amine that caused 5, 10, and 20% yield reduction was 2557, 4247, and >5040 g a.e./ha when applied to 4-leaf maize and 184, 441, and 1245 g a.e./ha when applied to 8-leaf maize, respectively.
Based on these results, glyphosate plus MCPA amine applied at the manufacturer’s recommended dose of 630 g a.e./ha applied to 4-leaf maize has potential to cause injury but the injury is transient with no significant reduction in yield.
However, when glyphosate plus MCPA amine is applied to 8-leaf maize it has the potential to cause significant injury and yield loss in maize.
American Psychological Association (APA)
Soltani, Nader& McNaughton, Kris& Gillard, Chris L.& Nurse, Robert E.& Sikkema, Peter H.. 2015. Tolerance of Glyphosate-Resistant Maize to Glyphosate Plus MCPA Amine Is Influenced by Dose and Timing. Advances in Agriculture،Vol. 2015, no. 2015, pp.1-5.
https://search.emarefa.net/detail/BIM-1052163
Modern Language Association (MLA)
Soltani, Nader…[et al.]. Tolerance of Glyphosate-Resistant Maize to Glyphosate Plus MCPA Amine Is Influenced by Dose and Timing. Advances in Agriculture No. 2015 (2015), pp.1-5.
https://search.emarefa.net/detail/BIM-1052163
American Medical Association (AMA)
Soltani, Nader& McNaughton, Kris& Gillard, Chris L.& Nurse, Robert E.& Sikkema, Peter H.. Tolerance of Glyphosate-Resistant Maize to Glyphosate Plus MCPA Amine Is Influenced by Dose and Timing. Advances in Agriculture. 2015. Vol. 2015, no. 2015, pp.1-5.
https://search.emarefa.net/detail/BIM-1052163
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1052163