| |
| Publication Type:
| Report |
|---|
| Content Type: | Abstract or Summary only |
|---|
| Author(s): | Waltz, F. C. Jr.;
Higingbottom, J. K.;
McCarty, L. B. |
|---|
| Author Affiliation: | Clemson University, Clemson, SC |
|---|
| Title: | Postemergence control of dallisgrass (Paspalum dilatatum) in bermudagrass fairways |
|---|
| Section: | Section II: Weed management in turf pasture, and rangeland
Other records with the "Section II: Weed management in turf pasture, and rangeland" Section
|
|---|
| Meeting Info.: | 54th Annual Meeting, Biloxi, Mississippi: January 22-24, 2001 |
|---|
| Source: | Southern Weed Science Society Proceedings. Vol. 54, 2001, p. 68-69. |
|---|
| Publishing Information: | Champaign, IL: Southern Weed Science Society. |
|---|
| # of Pages: | 2 |
|---|
| Keywords: | TIC Keywords: Golf driving ranges; Golf courses; Golf fairways; Herbicide combinations; Postemergence weed control; Paspalum dilatatum; Cynodon dactylon; Application rates; Imazameth; Herbicide resistance; Visual evaluation; Quinclorac; MSMA; Triclopyr
|
|---|
| Trade Names: | Plateau; Drive; Turflon |
|---|
| Abstract/Contents: | "Weedy grass species like dallisgrass (Paspalum dilatatum), a clumped warm season perennial that reproduces by seed and short rhizomes, are difficult to selectively control in bermudagrass (Cynodon sp.) turf. Dallisgrass is common in the Southeastern United States and due to its coarse texture and unsightly seedheads, disrupts the aesthetics of golf course fairways. Two field experiments were initiated to evaluate various rates and tank mix combinations of Plateau (imazameth) for dallisgrass control and bermudagrass tolerance. For both studies, plots were established on a common bermudagrass driving range and maintained by the staff of Boscobel Golf Club in Pendleton, South Carolina. In study 1, plots were 3 m x 3 m in a randomized complete block design with 3 replications. Using a CO2 backpack sprayer set to deliver 187 1 ha-1, postemergence treatments were applied on May 10, 2000 with a reapplication on June 23, 2000 (7 weeks after initial treatment). Treatments included Plateau at 0.05, 0.07, 0.09, and 0.11 kg ai ha-1, and MSMA at 2.24 kg ai ha-1. Methylated seed oil at 1.875% v/v was tank mixed with all treatments. In study 2, plots were 1 m x 2 m in a randomized complete block design with 3 replications. A single postemergence treatment was applied on August 14, 2000 using a CO2 backpack sprayer set to deliver 187 1 ha-1. Treatments included Plateau (0.07 kg ai ha-1), Drive (quinclorac) (0.84 kg ai ha-1), MSMA (2.24 kg ai ha-1), Plateau + Drive (0.07 + 0.84 kg ai ha-1), Plateau + MSMA (0.07 + 0.84 kg ai ha-1), Plateau + Turflon ester (triclopyr) (0.07 + 1.12 kg ai ha-1), and Drive + MSMA + Turflon ester (0.84 + 2.24 + 1.12 kg ai ha-1). Methylated seed oil was not added. For both studies, an untreated control was included and ratings for visual dallisgrass control ratings were made on a 0% to 100% scale, 0%=no control, and 100%=complete control, 70% control was considered minimally acceptable. Also, bermudagrass injury was rated on a 0% to 100%, 0%=no visible injury or discoloration and 100%=brown dead turfgrass, 30% was considered the maximum allowable injury. In study 1, good (>80%) dallisgrass control was observed 12 weeks after initial treatment (WAIT) in plots treated with the highest rate of Plateau (0.11 kg ai ha-1) and MSMA. Bermudagrass injury at this rating date was greater for all the Plateau treatments (15% to 40%) than for plants treated with MSMA (0% injury). These two treatments continued to provide acceptable (>70%) control at 14 WAIT with no visible bermudagrass injury. In study 2, only the treatments which contained Plateau and MSMA (Plateau + MSMA, Plateau + Drive + MSMA, and Plateau + MSMA + Turflon ester) provided acceptable (>70%) control at 6 WAIT. At 2 WAIT, unacceptable (>30%) bermudagrass injury was observed with treatments containing Plateau. However, at 4 WAIT bermudagrass injury was minimal (<5%) for all treatments except Plateau + Turflon ester and Plateau + MSMA + Turflon ester which had injury rating exceeding 40%. From these studies, it appears for effective control of dallisgrass, multiple applications will be necessary and MSMA is needed for acceptable, long-term control. Unacceptable bermudagrass injury can be expected within the first couple of weeks following treatments containign the tested rates of Plateau. Further research involving herbicide rates and combinations, effects on various species of bermudagrass, and various biotypes of dallisgrass are needed." |
|---|
| Language: | English |
|---|
| References: | 0 |
|---|
| See Also: | Other items relating to: M S M A |
|---|
| Note: | This item is an abstract only! |
|---|
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Waltz, F. C. Jr., J. K. Higingbottom, and L. B. McCarty. 2001. Postemergence control of dallisgrass (Paspalum dilatatum) in bermudagrass fairways. South. Weed Sci. Soc. Proc. 54:p. 68-69. |
| Fastlink to access this record outside TGIF: https://tic.msu.edu/tgif/flink?recno=80674 |
| If there are problems with this record, send us feedback about record 80674. |
| Choices for finding the above item: |
|---|
| 
MSU catalog number: SB 611 .S6 v.54 |
| Request through your local library's inter-library loan service (bring or send a copy of this TGIF record) |
