2017 Chart for Selection of Herbicides Based on Site of Action
February 2, 2017
Management of glyphosate-resistant weeds is now the greatest challenge for Nebraska crop producers and land managers. The 2017 Herbicide Classification Chart from Take Action Against Weeds is an easy means for identifying herbicide site of action to avoid repeated use of the same action on the same field.
Using Herbicide Prices and Efficacy Ratings to Select for Top Value
January 17, 2017
Take time this winter to strategize your weed management plan. Use Nebraska Extension resources to study herbicide efficacy, mode and site of action, and approximate costs to select products likely to provide the most value in weed control.
Management of ALS-Resistant Palmer Amaranth and Waterhemp in the Panhandle
January 6, 2017
Palmer amaranth and waterhemp in the Panhandle are resistant to ALS-inhibiting herbicides. While control of these weeds in dry bean can be challenging, corn, irrigated small grains, and sugarbeet make good rotation options for control. A combined pre/post treatment strategy controls weeds in the early part of the season when crop yield is most impacted and weed species are most susceptible to control inputs.
Nebraska Extension Pest of The Month: Horseweed
January 5, 2017
Horseweed (marestail, Conyza canadensis L.) is a unique weed species that can emerge in both fall and spring. In Nebraska, unlike the eastern Corn Belt, horseweed populations predominantly emerge in fall as a winter annual.
Managing Glyphosate- and ALS-Resistant Kochia in the Panhandle
December 15, 2016
The development and management of pesticide-resistant kochia in dryland and irrigated systems in the Panhandle including a table of herbicide options for Nebraska.
Understanding the Roundup Ready 2 Xtend™ Soybean Weed Management System
November 11, 2016
A new soybean cultivar with dicamba-tolerant Roundup Ready 2 Xtend™ soybean is expected to be planted on over 15 million acres in 2017, offering an additional means of managing herbicide-resistant weeds. The weed management system, which was tested the last four years in Nebraska trials, provides for use of Roundup Xtend™ of XtendiMax™ (dicamba).
Q&A: Which formulation of 2,4-D is preferred for fall application?
November 4, 2016
Answers to three grower questions on fall herbicide application in row crops.
EPA Re-Affirms Enlist Duo for GE Crops and Proposes Amended Registration
November 1, 2016
Enlist Duo containing the choline salt of 2,4-D and glyphosate was first registered in 2014 for use in genetically engineered corn and soybean in select states, including Nebraska. After granting the registration, EPA learned that the registrant had made claims of synergy between the ingredients in the herbicide’s formula that had not been shared with EPA at the time of registration.