Glyphosate-Resistant Palmer Amaranth Confirmed in South-Central Nebraska
March 15, 2017
Palmer amaranth (Amaranthus palmeri S. Wats.) is a C4 dioecious species (separate male and female plants) native to the southwestern United States.
Handy Bt Trait Table Revised for 2017
January 19, 2017
The Handy Bt Trait Table for US corn production has been updated for 2017. It includes information on all registered Bt corn hybrids commercially available and summarizes which insects are controlled by which hybrids, which Bt and herbicide tolerance traits are expressed in different hybrids, and the Insect Resistance Management Refuge requirements associated with these hybrids.
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.
Fall is Optimal for Marestail Management
October 28, 2016
With corn and soybean harvest nearing completion in Nebraska this is a great time to begin scouting fields for winter annual weeds like marestail. Timing is critical to successful control of marestail, especially in no-till soybeans as many populations have evolved resistance to glyphosate and ALS-inhibiting herbicides.
Antibiotic Resistance Found to Naturally Occur in Soils
September 22, 2016
Sandra Avant, USDA ARS
U.S. Department of Agriculture (USDA) scientists have found antibiotic-resistant bacteria in Nebraska prairie soils that had little or no exposure to human or animal activity.