Midwest Farmers Coopertive Agronomy provides a full range of innovative agronomic products and services across parts of nine counties in Southeast Nebraska. Our complete line of Nutrient Management, Weed Management, Precision Services and Prescriptions, Seed and Seed Treatment, and Consulting Services as well as our locally positioned, well trained, experienced staff enables you to achieve your goals in all areas of your operation. Local expertise, precise knowledge, and attention to every detail of your operation means we are your partner in success.
Japanese Beetles have arrived! They are starting to show up in corn and soybean fields. You may want to consider an insecticide if you have them present and you have not made your post application.
Some of the Agronomy team attended the Glyphosate-Resistant Palmer amaranth Management Field Day in Carleton, NE July 11th. The training was conducted by UNL under the guidance of Dr. Amit Jhala. This was a very informative day hearing about this invasive species that continues to show up in our trade area. We were shown field demonstrations of how to control Palmer amaranth in soybean fields in Nebraska.
An extension agent explained how to determine when Dicamba injury first appeared on the soybean plant. Since we know that a new soybean node is developed every 2.75 days (in Nebraska), we can determine when Dicamba was sprayed in a field by counting the nodes. Many times injury is showing up after a Dicamba application in corn, or spraying a roadside ditch. This injury has nothing to do with an application of Dicamba in soybeans.
Here is an example of Roundup PowerMax @ 32 ounces applied twice to attempt to control Palmer amaranth. There is a resistance issue with straight Roundup PowerMax and Palmer amaranth. This weed will germinate all season long so we need to use multiple modes of action along with herbicides that have residual activities to keep this weed under control. Other management options for Palmer amaranth are Balance GT/Liberty Link Soybeans, Enlist E3 soybeans (resistant to 2,4-D choline, glyphosate, and Glufosinate).
Here is a close-up of a Palmer amaranth weed that was found in the Palmyra area last year. This plant was put in a plastic bag and removed from the field so the seed would not germinate this year. Palmer amaranth is capable of producing 500,000 to 1,000,000 seeds per plant, so when you find a small population in your field, it is best to physically remove them rather than cutting them and leaving them in the field.