http://www.croplife.com/crop-inputs/herbicides/six-rs-of-herbicide-resista...
Feb 13, 2012 ... We have glyphosate-resistant horseweed (a.k.a. marestail) in a number of areas
throughout the state, glyphosate-resistant giant ragweed that ...
Weeds: The Fearsome Five | CropLife
http://www.croplife.com/special-reports/weed-resistance/top-5-weeds-the-fe...
Oct 1, 2013 ... HORSEWEED/MARESTAIL | Conyza canadensis • One of the most common
weeds in eastern and central parts of U.S. • Well-adapted to no ...
When Weed Control Goes Wrong | CropLife
http://www.croplife.com/special-reports/weed-resistance/when-weed-control-...
Oct 1, 2013 ... Cases of glyphosate resistant horseweed have resulted in a net increase in
production costs of just over $70 per acre in Tennessee soybeans.
Controlling Marestail After Crop Emergence | CropLife
http://www.croplife.com/crop-inputs/herbicides/controlling-marestail-after...
Jul 8, 2013 ... Over the past several days, growers have increasingly been looking for options to
control marestail (horseweed) after crop emergence, said ...
http://www.croplife.com/crop-inputs/herbicides/new-herbicide-resistant-wee...
Aug 27, 2012 ... ... considering that Ohio already has healthy populations of glyphosate-resistant
marestail (also known as horseweed), giant ragweed, common ...
http://www.croplife.com/crop-inputs/herbicides/8-tips-for-controlling-weed...
Oct 17, 2011 ... With the increasing prevalence of horseweed, including glyphosate-resistant
populations, fall herbicide applications may prove more ...
http://www.croplife.com/crop-inputs/herbicides/weeds-an-ongoing-battle/
Aug 31, 2011 ... These include common ragweed, giant ragweed, hairy fleabane, common
waterhemp, Italian ryegrass, and marestail (or horseweed), which ...
http://www.croplife.com/crop-inputs/herbicides/weed-management-video-shows...
Oct 4, 2012 ... From the South to the Midwest and to the Southwest, weeds, such as Palmer
amaranth, horseweed and waterhemp, daily threaten America's ...