1. Strongarm Applied Postemergence in Georgia Peanut
E. P. Prostko, J.T. Flanders, S. Komar, E. Harrison
Dept. Crop & Soil Sciences
University of Georgia
APRES 2004

2. Strongarm labeled in March 2000 PPI, PRE, AC broadleaf weeds
0.45 ozs/A
$15/A
18% of GA acres in 04’
10 month cotton rotation restriction

3. Objective
To evaluate the performance of POST applied Strongarm on various weed species in GA.

4. Materials and Methods small plot techniques 3-4 replications
6 trials in 2003
3 on-farm
3 experiment station
tropical spiderwort
bristly starbur
FL beggarweed
annual mg
wild poinsettia
wild radish

5. Results

6. Tropical spiderwort control in peanuts with Strongarm @ 0
Tropical spiderwort control in peanuts with 0.45 ozs/A, Grady Co., 2003. a ab a ab
abc c
EPOST = 17 DAP (2”, 3 leaf)
LPOST = 31 DAP (up to 6”)

7. Tropical spiderwort control with POST applied Strongarm, 2003
Untreated
Strongarm applied
17 DAP
Strongarm applied
31 DAP
PE-24-03
46 DAP

8. Bristly starbur control with POST applications of Strongarm, 2003
1-15” tall bristly starbur
Included 0.25% v/v

9. Bristly Starbur Control with POST Applied Strongarm
Untreated
0.45 ozs/A
0.113 ozs/A
PE-27-03
32 DAT

10. Strongarm POST Test - Growth Stages Ty-Ty, GA 2003

11. Annual morningglory control with POST applications of Strongarm - 11 WAP
LSD 0.05 = 4
Averaged over 3 timings (1, 3, and 5 WAP)

12. Florida beggarweed control with POST applications of Strongarm - 11 WAP
LSD 0.05 = 12
Averaged over 3 timings (1, 3, and 5 WAP)

13. 11 WAP
Strongarm 0.45 ozs/A +
0.25% v/v
(Applied 5 WAP)
Untreated

14. Wild poinsettia control with POST applications of Strongarmab ab bc bc c c bc bc d d
Applied 21 DAP
1-3” tall; cot- 4 leaf weeds
Included 0.25% v/v
Mitchell County, 2003

15. Wild poinsettia control with POST herbicides, 2003
Untreated
1.44 ozs/A
0.45 ozs/A
PE-15-03
67 DAT

16. Wild radish control with POST applied Strongarm
(3-4 leaf)
(7” rosette)
(flowering)
Included 0.25% v/v
40 day after first timing
LSD 0.05 = 11

17. Wild Radish Control with POST Applied Strongarm (1”, 3-4 leaf)
Untreated
Strongarm
0.45 ozs/A
Strongarm
0.225 ozs/A
40 DAT

18. Summary good to excellent POST control of several species
reduced rates on sensitive species such as bristly starbur, annual morningglory, wild radish
timing is critical on some species such as beggarweed
no POST control of sicklepod

19. Future Research variety tolerance crop rotations other weed species
longer or shorter????
other weed species
horseweed
copperleaf
eclipta

20. University of
Georgia
Extension Weed
Science
(gaweed.com)