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Tag "Bob Hartzler"

2017 Western Iowa Labor Day Palmer Amaranth Tour

2017 Western Iowa Labor Day Palmer Amaranth Tour

👤By Bob Hartzler, Extension Weed Specialist, Iowa State University 🕔Sep 6, 2017

For 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.  Following is a brief summary of  my visits to Harrison,

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

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

👤By Bob Hartzler, Extension Weed Specialist, Iowa State University 🕔Aug 23, 2017

A 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 counties to 50. As we’ve stressed before, Palmer amaranth is

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

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

👤By Bob Hartzler, Professor of Agronomy, Iowa State University 🕔Aug 18, 2017

The 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 solved the volatility problem associated with dicamba.  Since the fundamentals

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Iowa: Dicamba Off-Target Injury Complaints Continue to Rise

Iowa: Dicamba Off-Target Injury Complaints Continue to Rise

👤By Bob Hartzler, Iowa State University Weed Specialist 🕔Aug 4, 2017

As 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 year. Dicamba was involved in 46 of these cases. Two of the

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

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

👤By Bob Hartzler, Iowa State University Weed Specialist 🕔Jul 14, 2017

While 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 doses. Large scale drift problems were experienced when the phenoxy

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

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

👤By Pam Smith DTN Progressive Farmer Crops Technology Editor 🕔Jul 14, 2017

The 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 Tennessee Secretary of State extend through Oct. 1, 2017, and

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Herbicide Drift: How Low A Dose Triggers Symptoms? Surprising Answers

Herbicide Drift: How Low A Dose Triggers Symptoms? Surprising Answers

👤BY BOB HARTZLER, EXTENSION WEED SPECIALIST, IOWA STATE UNIVERSITY 🕔Jan 18, 2017 Read Full Article
Deciphering The New Dicamba, 2,4D Labels

Deciphering The New Dicamba, 2,4D Labels

👤BY BOB HARTZLER, IOWA STATE UNIVERSITY 🕔Jan 17, 2017

The recent approval of the new dicamba products approved for use on Xtend soybean has been received with mix feelings by the agricultural community; many are excited about the new options to help with the growing herbicide resistance problem, whereas others

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Corn Belt: Palmer Pigweed Turning Up in CRP Acres – DTN

Corn Belt: Palmer Pigweed Turning Up in CRP Acres – DTN

👤By Pam Smith DTN Progressive Farmer Crops Technology Editor 🕔Aug 10, 2016

Pollinator plots may be designed to attract beneficial insects, but there’s a potential side effect to the good will. Weed scientists in Iowa and Illinois have discovered Palmer amaranth lurking in some plots and are warning growers to scout for

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Iowa: Why is Enlist Corn Resistant to the Fop Herbicides?

👤By Bob Hartzler, Extension Weed Specialist and Professor of Agronomy, Iowa State University 🕔Feb 2, 2015

EDITOR’S NOTE: This is a supplemented version of the original article, with comments from Dow AgroSciences regarding comments made by the author. See those comments below the original article. Every now and then something comes up that reinforces my appreciation

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