WebJul 13, 2009 · Excess usage of glyphosate-resistant crops has led to weeds, such as marestail, that also are resistant to glyphosate, the herbicide used in Roundup. Bill Johnson, a Purdue associate professor of ... WebFeb 3, 2014 · In soybeans, Roundup-resistant weeds are becoming a bigger challenge each year. Worse yet, most of the post-emerge weed control options not named Roundup or Liberty stink. That’s right. I said it. They stink. That’s the reason every farmer moved so quickly to Roundup Ready soybeans when they first came out years ago.

Status and concerns for glyphosate resistance Integrated Crop Manag…

WebPurdue University College of Agriculture WebNov 14, 2012 · Weed specialists Mark Loux of Ohio State and Bill Johnson of Purdue have been working on a strategy for controlling marestail that is resistant to glyphosate. Part of the strategy is built on the use of LibertyLink soybeans and the use of Liberty herbicide. However, there are many alternatives that they suggest which will integrate with your ... smart color sensor technology

Herbicide diversity needed to keep Roundup effective - Phys.org

WebCommon name: Horsetail, mare’s tail (misapplied) Botanical name: Equisetum arvense. Areas affected: Beds, borders, lawns, paths and patios. Main causes: May establish from spores, but usually arrives via rhizomes from neighbouring gardens, or stem fragments in composts or manures. Timing: Seen in spring and summer; treat in late summer. WebMarestail (also called horseweed) is one of the most challenging herbicide resistant weeds we face in Pennsylvania row crops. While some marestail in the state is not herbicide … WebJul 5, 2012 · According to Bill Johnson, marestail and giant ragweed are spread widely around the state. Waterhemp is mainly seen in southwest, northwest and east-central Indiana and glyphosate-resistant populations have now been confirmed in nine counties. Glyphosate-resistant Palmer amaranth has been confirmed in one county. smart color changing string lights