| |
| Web URL(s): | http://www.wsweedscience.org/wp-content/uploads/2021-Proceedings-WSWS-Corrected.pdf#page=26
Last checked: 06/30/2022
Requires: PDF Reader
Notes: Item is within a single large file |
|---|
| Publication Type:
| Report |
|---|
| Content Type: | Abstract or Summary Only |
|---|
| Author(s): | Umeda, Kai |
|---|
| Author Affiliation: | University of Arizona, Phoenix, AZ |
|---|
| Title: | Efficacy and safety of topramezone for the control of summer grass weeds in turf |
|---|
| Section: | Poster session
Other records with the "Poster session" Section
WSWS Project 2. Weeds of horticultural crops
Other records with the "WSWS Project 2. Weeds of horticultural crops" Section
|
|---|
| Meeting Info.: | March 1-4, 2021 |
|---|
| Source: | Western Society of Weed Science Annual Meeting 2021. Vol. 74, March 2021, p. 14. |
|---|
| Publishing Information: | Westminster, Colorado: Western Society of Weed Science |
|---|
| # of Pages: | 1 |
|---|
| Abstract/Contents: | "During the summer of 2020, five field experiments were conducted to evaluate the efficacy of topramezone (Pylex herbicide) against southwestern cupgrass (Eriochloa gracilis), crabgrass (Digitaria spp.), and goosegrass (Eleusine indica) in bermudagrass turf. Topramezone can selectively control summer annual grass weeds in warm-season bermudagrass turf while also being able to selectively control bermudagrass in cool-season turfgrasses. The margin of safety is very narrow to control cupgrass, crabgrass, and goosegrass with the typical occurrence of phytotoxicity in the form of bleaching on bermudagrass turf. Topramezone at rates ranging from 0.011 to 0.033 lb a.i./A was applied with methylated seed oil or in a tank-mix with zinc sulfate (ZnSO4) or with other herbicides to compare the relative phytotoxicity or safety on bermudagrass turf and efficacy on weeds. Topramezone at 0.016 and 0.033 lb a.i./A were effective against both crabgrass and southwestern cupgrass within a week of application and optimal weed control was observed within 2 weeks. The higher rate tended to be more active and weed control lasted slightly longer. The addition of quinclorac in a tank-mix did not enhance weed control efficacy. The addition to topramezone of ZnSO4 at 16 lb/A reduced efficacy against cupgrass. Goosegrass control was achieved with topramezone at 0.011 and 0.016 lb a.i./A. A single application in June gave near complete control at 3 weeks after the application. Sequential applications in July gave acceptable control at better than 80% and the addition of ZnSO4 to topramezone at 0.016 lb a.i./A was comparable to topramezone at 0.011 lb a.i./A. Tank-mixing topramezone with ZnSO4, carfentrazone + 2,4-D + dicamba + MCPP, or metribuzin did not appear to enhance or reduce goosegrass control. A significantly high degree of bleaching lasted for over 2 weeks with a May application of topramezone. The addition of quinclorac did not reduce the onset of bermudagrass turf injury. June or July applications of topramezone with ZnSO4 showed reduced bermudagrass turf injury and faster recovery at under 2 weeks. Tank-mixing topramezone with carfentrazone + 2,4-D + dicamba + MCPP, or metribuzin significantly reduced turf injury." |
|---|
| Language: | English |
|---|
| References: | 0 |
|---|
| Note: | This item is an abstract only! |
|---|
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Umeda, K. 2021. Efficacy and safety of topramezone for the control of summer grass weeds in turf. Proc. West. Soc. Weed Sci. 74:p. 14. |
| Fastlink to access this record outside TGIF: https://tic.msu.edu/tgif/flink?recno=319937 |
| If there are problems with this record, send us feedback about record 319937. |
| Choices for finding the above item: |
|---|
| Web URL(s):
http://www.wsweedscience.org/wp-content/uploads/2021-Proceedings-WSWS-Corrected.pdf#page=26
Last checked: 06/30/2022
Requires: PDF Reader
Notes: Item is within a single large file |
| 
MSU catalog number: b2224583 |
| Request through your local library's inter-library loan service (bring or send a copy of this TGIF record) |
