| |
| Web URL(s): | http://www.newss.org/proceedings/proceedings_2008.pdf#page=103
Last checked: 07/16/2013
Requires: PDF Reader
Notes: Item is within a single large file |
|---|
| Publication Type:
| Report |
|---|
| Author(s): | Willis, J. B.;
Goddard, M. J.;
Askew, S. D. |
|---|
| Author Affiliation: | Virginia Tech, Blacksburg |
|---|
| Title: | Effects of dithiopyr and triclopyr on antichromatic effects of mesotrione on turfgrass and selected weeds |
|---|
| Section: | Turfgrass and plant growth regulators II
Other records with the "Turfgrass and plant growth regulators II" Section
|
|---|
| Meeting Info.: | Philadelphia, Pennsylvania: January 7-10, 2008 |
|---|
| Source: | Proceedings of the Sixty-Second Annual Meeting of the Northeastern Weed Science Society. Vol. 62, 2008, p. 85. |
|---|
| Publishing Information: | Baltimore, Maryland: Northeastern Weed Science Society |
|---|
| # of Pages: | 1 |
|---|
| Keywords: | TIC Keywords: Color retention; Dithiopyr; Herbicide efficacy; Herbicide evaluation; Herbicide injury; Mesotrione; Triclopyr; Weed control
|
|---|
| Abstract/Contents: | "Mesotrione will be the first p-hydroxyphenylpyruvate dioxygenase inhibitor (HPPD) registered for used in turfgrass. When HPPD inhibitors are applied to susceptible plants, their foliage turns white. Susceptible plant response to HPPD inhibitors has been described as antichromatic due to complete loss of color in treated foliage. Many turfgrass managers have indicated that their clientele may be displeased with the antichromatic response caused by mesotrione. Combinations of mesotrione and triclopyr had better turf color than vegetation treated with mesotrione alone in research at Virginia Tech. We speculate that dithiopyr, another pyridine herbicide, may have the same response. Our objectives were to evaluate mesotrione plus triclopyr and dithiopyr for effects on turfgrass and weed control. Field trials evaluated mesotrione at 0.13 lb ai/A plus triclopyr at 1.0 lb ai/A compared to each product alone for injury to Kentucky bluegrass, perennial ryegrass, tall fescue, and fine fescue. Turfgrass injury, color, and weed control were evaluated at 2 and 4 WAT (weeks after treatment). A randomized complete block experimental design was used with 3 replications. Greenhouse trials were conducted using 2- to 4- tiller smooth crabgrass in 4-inch pots evaluated color and amount of white foliage. A 3 by 8 factorial arrangement of treatments with 3 levels of mesotrione including 0, 0.13, and 0.25 lb ai/A and 8 levels of pyridine herbicide including dithiopyr at 0.06, 0.13, 0.25 and 0.50 lb ai/A and triclopyr at 0.13, 0.25, 0. 50, and 1.0 lb ai/A. Additional comparison treatments were mesotrione at 0, 0.13, and 0.25 lb ai/A and nonionic surfactant (NIS) at 0.25% v/v alone. All treatm ents including mesotrione were applied with NIS at 0.25 % v/v. Injury observed in these trials was only temporary and complete recovery was noted by 4 WAT. The combination of meso trione and triclopyr significantly controlled white clover, corn speedwell, and dandelion postemergent, and crabgrass preemergent. Crabgrass color was significantly reduced by mesotrione alone. Tank-mixing triclopyr at 0.50 and 1.0 lb ai/A with mesotrione improved turfgrass color by reducing the amount of white foliage on individual plants. Nontreated plants and mesotrione treated plants had observed color ratings of 6.3 and 2.3, respectively. Leaf counts indicate that only 3 to 18 % of crabgrass was white when triclopyr at 0.50 and 1.0 lb ai/A was included with mesotrione while 40% of crabgrass foliage wa s white when mesotrione was used alone. Single applications of mesotrione will not control crabgrass and tank-mixtures rarely improved crabgrass control or decrease fresh weight. However, triclopyr at 0.50 and 1.0 lb ai/A addition to mesotrione significantly reduced the amount of white crabgrass foliage compared to mesotrione alone. Mesotrione plus triclopyr is a promising combination for improving broadleaf weed control while reducing antichromatic effects of mesotrione toward grass species." |
|---|
| Language: | English |
|---|
| References: | 0 |
|---|
| Note: | This item is an abstract only! |
|---|
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Willis, J. B., M. J. Goddard, and S. D. Askew. 2008. Effects of dithiopyr and triclopyr on antichromatic effects of mesotrione on turfgrass and selected weeds. Proc. Annu. Meet. Northeast. Weed Sci. Soc. 62:p. 85. |
| Fastlink to access this record outside TGIF: https://tic.msu.edu/tgif/flink?recno=224742 |
| If there are problems with this record, send us feedback about record 224742. |
| Choices for finding the above item: |
|---|
| Web URL(s):
http://www.newss.org/proceedings/proceedings_2008.pdf#page=103
Last checked: 07/16/2013
Requires: PDF Reader
Notes: Item is within a single large file |
| 
MSU catalog number: SB 610 .N62 |
| Find from within TIC:
Digitally in TIC by file name: newss2008 |
| Request through your local library's inter-library loan service (bring or send a copy of this TGIF record) |
