+ Site Statistics
+ Search Articles
+ PDF Full Text Service
How our service works
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ Translate
+ Recently Requested

Weed control with postemergence glyphosate tank mixes in glyphosate-resistant soybean



Weed control with postemergence glyphosate tank mixes in glyphosate-resistant soybean



Canadian Journal of Plant Science 94(7): 1239-1244



Six field trials were conducted over a 3-yr period (2011, 2012 and 2013) in Ontario, Canada, to evaluate various postemergence (POST) glyphosate tank mixes for weed management in glyphosate-resistant (GR) soybean. Herbicide treatments included glyphosate applied alone or mixed with acifluorfen, fomesafen, bentazon and thifensulfuron-methyl. Glyphosate tank mixtures with acifluorfen, fomesafen, bentazon and thifensulfuron-methyl caused GR soybean injury of up to 21, 11, 4 and 14% at 7 d after treatment (DAT), which was reduced to 5, 0, 0 and 2% by 28 DAT, respectively. Velvetleaf, green pigweed, common ragweed and common lambsquarters control ranged from 55 to 95, 93 to 100, 70 to 92 and 81 to 98% at 28 DAT respectively. Relative to glyphosate alone, tank mixtures with thifensulfuron-methyl provided equivalent to increased weed control, while acifluorfen, fomesafen and bentazon provided equivalent to reduced weed control. All herbicide tank mixtures resulted in higher yields (3.8-4.0 t ha(-1)) than the untreated check (2.7 t ha(-1)), and were generally equivalent to glyphosate alone (4.1 t ha(-1)). Results from this study indicate that the glyphosate tank mixtures evaluated did not provide a benefit over glyphosate alone.

Please choose payment method:






(PDF emailed within 0-6 h: $19.90)

Accession: 066295497

Download citation: RISBibTeXText

DOI: 10.4141/cjps-2014-060


Related references

Problem Weed Control in Glyphosate-Resistant Soybean with Glyphosate Tank Mixes and Soil-Applied Herbicides. Weed Technology 23(4): 507-512, 2009

Influence of Glyphosate Tank-mix Combinations and Application Timings on Weed Control and Yield in Glyphosate-resistant Soybean. Crop management, 2007

Weed control, environmental impact and profitability with glyphosate tank mixes in glyphosate-tolerant corn. Canadian Journal of Plant Science 90(1): 125-132, 2010

Benefit of tank mixing dicamba with glyphosate applied after emergence for weed control in dicamba- and glyphosate-resistant soybean. Canadian Journal of Plant Science 97(5): 891-901, 2017

Reduced-Input, Postemergence Weed Control with Glyphosate and Residual Herbicides in Second-Generation Glyphosate-Resistant Cotton. Weed Technology 21(4): 997-1001, 2007

Reduced-input, postemergence weed control with glyphosate and residual herbicides in second-generation glyphosate-resistant cotton. Weed Technology 21(4): 997-1001, 2007

Glyphosate-Resistant Common Ragweed (Ambrosia artemisiifolia) Control with Postemergence Herbicides and Glyphosate Dose Response in Soybean in Ontario. Weed Technology 29(3): 380-389, 2015

Effect of postemergence glyphosate application timing on weed control and grain yield in glyphosate-resistant corn: Results of a 2-yr multistate study. Weed Technology 17(4): 821-828, October-December, 2003

Glyphosate tank mixtures with SAN 582 for burndown or postemergence applications in glyphosate-tolerant soybean (Glycine max). Weed Technology 12(1): 23-26, 1998

Glyphosate-resistant Canada fleabane [Conyza canadensis (L). Cronq.]: Dose response to glyphosate and control with postemergence herbicides in soybean in Ontario. Canadian Journal of Plant Science 93(6): 1187-1193, 2013

Influence of glyphosate and fungicide coapplications on weed control, spray penetration, soybean response, and yield in glyphosate-resistant soybean. Agronomy Journal0: 5, 1360-1365, 2008

Sulfentrazone enhances weed control of glyphosate in glyphosate-resistant soybean (Glycine max). Weed Technology 17(2): 249-255, 2003

Annual weed control by glyphosate in glyphosate-resistant soybean (Glycine max). Weed Technology 13(2): 394-398, 1999

Evaluation of weed control and crop tolerance with co-application of glyphosate and pyraflufen-ethyl in glyphosate-resistant soybean (Glycine max). Weed Technology 20(4): 1035-1039, 2006

Control of Problem Weeds in Roundup-Ready Soybean with Glyphosate Tank Mixes. Crop watch: e 8, no 14, 2007