+ 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

Problem Weed Control in Glyphosate-Resistant Soybean with Glyphosate Tank Mixes and Soil-Applied Herbicides



Problem Weed Control in Glyphosate-Resistant Soybean with Glyphosate Tank Mixes and Soil-Applied Herbicides



Weed Technology 23(4): 507-512



Although glyphosate controls many plant species, certain broadleaf weeds in Nebraska's cropping systems exhibit various levels of tolerance to the labeled rates of this herbicide, including ivyleaf morningglory, Venice mallow, yellow sweetclover, common lambsquarters, velvetleaf, kochia, Russian thistle, and field bindweed. Therefore, two field Studies were conducted in 2004 and 2005 at Concord and North Platte, NE, to evaluate performance of (1) seven preemergence (PRE) herbicides and (2) glyphosate tank mixes applied postemergence (POST) at three application times for control of eight weed species that are perceived as problem weeds in glyphosate-resistant soybean in Nebraska. The PRE herbicides, including sulfentrazone plus chlorimuron, pendimethalin plus imazethapyr, imazaquin, and pendimethalin plus imazethapyr plus imazaquin provided more than 85% control of most weed species tested in this study 28 d after treatment (DAT). However, sulfentrazone plus chlorimuron and pendimethalin Plus imazethapyr Plus imazaquin were the only PRE, treatments that provided more than 80% control of most weed species 60 DAT. I it the POST glyphosate tank-mix study, the level of weed control was significantly affected by the timing of herbicide application; control generally decreased as weed height increased. In general, glyphosate tank mixes applied at the first two application times (early or mid-POST) with half label rates of lactofen, imazamox, imazethapyr, fomesafen, imazaquin, or acifluorfen, provided more than 80% control of all species that were 20 to 30 cm tall except ivyleaf morningglory, Venice mallow, yellow sweetclover, and field bindweed. Glyphosate tank mixes applied lace POST with lactofen, imazethapyr, or imazaquin provided more than 70% control of common lambsquarters, velvetleaf, kochia, and Russian thistle that were 30 to 50 cm tall. Overall, glyphosate tank mixes with half label rates of chlorimuron or acifluorfen were the best treatments; they provided more than 80% control of all the Studied weed species when applied at early growth stages. Results Of this Study Suggested that mixing glyphosate with other POST broadleaf herbicides, or utilizing soil-applied herbicides after crop Planting helped effectively control most problematic weeds in glyphosate-resistant soybean in Nebraska.

Please choose payment method:






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

Accession: 066227305

Download citation: RISBibTeXText

DOI: 10.1614/wt-09-012.1


Related references

Weed control with postemergence glyphosate tank mixes in glyphosate-resistant soybean. Canadian Journal of Plant Science 94(7): 1239-1244, 2014

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

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

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

Supplementary weed control using soil-applied herbicides in glyphosate-resistant maize in Texas. Crop protection 25(10): 1071-1074, 2006

Using soil-applied herbicides in combination with glyphosate in a glyphosate-resistant cotton herbicide program. Crop protection 23(10): 1007-1010, 2004

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

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

Control of glyphosate-resistant waterhemp with preemergence herbicides in glyphosate- and dicamba-resistant soybean. Canadian Journal of Plant Science 99(1): 34-39, 2019

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

Benefits of soil-applied herbicides in glyphosate-resistant soybean (Glycine max). Weed Technology 16(3): 541-547, 2002

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