Dicamba Restrictions Are Needed, but CBD Report Is Flawed – Commentary

🕔Mar 5, 2018The Center for Biological Diversity recently released a report describing the threat to monarch butterflies posed by an increased use of dicamba.  While I have been fairly critical of the […]

Iowa Weeds: The Cost of Resistance in Extra Herbicides

🕔Nov 13, 2017The primary impact of herbicide resistance for most Iowa farmers has been an increase in expenditures for herbicides.  Extension Weed Specialist Bob Hartzler decided to do a quick analysis of […]

Iowa: New Dicamba Labels Impact Application Timing

🕔Oct 26, 2017The EPA recently announced changes to the new dicamba labels in response to widespread off-target plant injury in 2016. The most significant change is classification of the new dicamba formulations as […]

Iowa Soybeans: Dicamba – How Many Hours Were Available to Spray in 2017?

🕔Sep 19, 2017My colleagues at Purdue recently compiled weather data to determine how many hours would be available to apply the new dicamba products (e.g. Xtendimax with VaporGrip Technology, FeXapan with VaporGrip […]

2017 Western Iowa Labor Day Palmer Amaranth Tour

🕔Sep 6, 2017For the past four years (maybe five) I’ve visited the first three known infestations of Palmer amaranth in western Iowa to track the status of the populations in these fields.  […]

Iowa: Palmer Pigweed – Add Osceola County to the Map – Increased Vigilance Needed

🕔Aug 23, 2017A farmer in Osceola County recently found a single Palmer amaranth in a soybean field. He removed and burned the offending plant. This brings the ‘official’ ISU count of infested […]

Dicamba Volatility in 2001: Iowa State Researchers Saw the Issue 16 Years Ago

🕔Aug 18, 2017The following article originally appeared on the ISU Weed Science Online website.  Current research is showing that the new formulations of dicamba (Xtendimax with Vapor Grip Technology and Engenia) have not […]

Iowa: Dicamba Off-Target Injury Complaints Continue to Rise

🕔Aug 4, 2017As of July 20, the Iowa Department of Agriculture and Land Stewardship (IDALS) had received 142 cases of pesticide misuse, historically this number has ranged from 58-85 at this time of […]

Dicamba Drift – Why Now? Two Reasons in Iowa; Multiple Reasons in Midsouth

🕔Jul 14, 2017While off-target movement of pesticides is not a new problem, the growth regulator herbicides create a unique situation due to their ability to induce easily observed symptoms at very low […]

Dicamba: Tennessee’s New Rules in Force; Missouri May Temporarily Lift Ban – DTN

🕔Jul 14, 2017The Tennessee Department of Agriculture (TDA) on Wednesday joined other Southern states by announcing additional measures to mitigate the risk of herbicides containing dicamba.  The new rules filed with the […]

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