New Research Quantifies the Dispersal of Glyphosate Resistance Trait Through Pollen-Mediated Gene Flow
May 18, 2017
The pollen-mediated gene flow was detected 38% to 54% at 0.1 meter distance and 5% to 9% at 50 meters, the highest distance tested in this study.
Absinth Wormwood - New Invasive Species in Nebraska Panhandle
May 17, 2017
An invasive species, absinth wormwood will establish quickly in disturbed areas and over-grazed sites and can out-compete desirable forbs and grasses in pastures and rangeland, reducing biodiversity.
How to Differentiate Common Waterhemp and Palmer Amaranth Seedlings
May 16, 2017
Growers should be on the lookout for common waterhemp and Palmer amaranth, which typically start emerging in the first or second week of May in Nebraska.
Watch for Palmer Amaranth in Conservation Reserve Program (CRP) Fields
May 12, 2017
Palmer amaranth has not been confirmed in conservation plantings in Nebraska; however, the identification and occurrence of Palmer amaranth in CRP fields in Iowa has raised concerns among weed scientists and growers about its spread into conservation plantings in Nebraska and offer some suggestions for growers.
Spraying the New Phenoxy Herbicide Formulations in Xtend and Enlist Soybeans Will Present Challenges
May 11, 2017
The new phenoxy herbicide formulations, including Enlist Duo™ (Dow), XtendiMax® (Monsanto), Engenia™ (BASF), and FeXapan™ (DuPont), offer growers new management options along with new application requirements. To alleviate problems related to applying new phenoxy herbicide formulations in soybeans as well as to increase herbicide performance, manufacturers have established application requirements. Here we discuss some of the key application factors to consider.
Considerations for Managing Herbicide-Resistant Weeds in Soybeans: Spring Burndown
April 28, 2017
One of the challenges with spring burndown application is timing. Wet and windy conditions can delay spraying and under these conditions weeds can grow significantly in a few days. Waiting until planting to spray troublesome weeds such as marestail may be too late to achieve adequate control. In addition, waiting until soybean planting limits the available herbicide options since there are relatively few labeled effective burndown chemicals for spraying at this time. The following section identifies key treatment aspects to consider for several resistant varieties in Nebraska.
Timing is Critical with Pre-Emergence Flumioxazin-Based Herbicides in Soybeans
April 26, 2017
Soybean planting has started in Nebraska and it’s time to apply pre-emergence herbicides. Six weeds have evolved resistance to glyphosate in Nebraska. The best way to effectively control resistant and other hard-to-control weeds is by applying residual, pre-emergence herbicides with multiple effective modes of action. Several new herbicides recently registered in soybean are in this category and could be considered.
Postemergence Weed Control in Alfalfa
April 21, 2017
Are you finding weeds in your new alfalfa? Vigorous weed growth this spring may make it extra tough for your seedlings as weeds reduce growth of new alfalfa by shading and competing for moisture.