1. Palmer Amaranth Most Troublesome Weed in US

2. Major Infestation

3. North Carolina State University’s Palmer Amaranth Research in Cotton
Check
Dicamba-based Program

4. North Carolina State University’s Palmer Amaranth Research in Cotton
Check
Dicamba-based Program

5. North Carolina State University’s Palmer Amaranth Research in Soybean
Check
Dicamba-based Program

8. Don’t let up on the Palmer
Residual + 2,4-D or dicamba preplant burndown; “yellow” herbicide PPI if in conventional tillage
At least two residual active ingredients PRE
Timely POST; residual in at least one POST
Residual layby; layby still has a place in resistance management

9. Don’t let up on the Palmer
Seed from ONE Palmer amaranth plant growing in
cotton field;
Clayton, NC 2015
1,032,400 seed
York, 2015

10. Total Loss for Soybean Crop

13. 2010 Palmer amaranth survey
Glyphosate-resistant, thifensulfuron-susceptible 3%
Glyphosate-susceptible, thifensulfuron-resistant 2%
Glyphosate- and thifensulfuron-resistant
95%

14. Preemergence Control 2010