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| Web URL(s): | http://www.newss.org/proceedings/proceedings_2010.pdf#page=41
Last checked: 07/22/2013
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Notes: Item is within a singel large file |
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| Publication Type:
| Report |
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| Content Type: | Abstract or Summary only |
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| Author(s): | Rana, A.;
Derr, J. |
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| Author Affiliation: | Virginia Tech, Blacksburg, Virginia |
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| Title: | Interaction of fenoxaprop and halosulfuron on herbicide effectiveness |
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| Meeting Info.: | Cambridge, MA: January 4-7, 2010 |
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| Source: | Proceedings: 64th Annual Meeting of the NortheasternWeed Science Society. Vol. 64, 2010, p. 25. |
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| Publishing Information: | Ithaca, NY: Northeastern Weed Science Society |
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| # of Pages: | 1 |
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| Keywords: | TIC Keywords: Cyperus esculentus; Fenoxaprop-ethyl; Halosulfuron; Herbicide combinations; Herbicide efficacy; Herbicide interaction; Quinclorac; Tank mix; Weed control
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| Abstract/Contents: | "Tank mixing herbicides is a widespread and economical method for controlling a broad spectrum of weed species in turf and other crops. The use of herbicide mixtures, however, could alter their effectiveness compared to herbicides applied separately. Antagonism occurs when the weed control response induced by the herbicide combination is less than the expected results of those chemicals applied alone. The objective of this research was to determine the effectiveness of combining fenoxaprop or quinclorac, postemergence herbicides used for annual grass control, with halosulfuron, used for yellow nutsedge (Cyperus esculentus L.) control. The two combination treatments were compared to fenoxaprop, quinclorac, and halosulfuron applied alone. These studies were conducted in containers using a randomized complete block design with one plant per plot, three pots per species per plot and with four replications, and each study was repeated. Herbicides were applied using a CO2-pressurized backpack sprayer at 25 gal/A using 8003 flat fan nozzles. The nonionic surfactant X-77 was added at 0.25 % v/v to each treatment. Plants were approximately one month old when treated. Injury ratings were taken 2 WAT and shoot weight was recorded 4 WAT. Application rates for the first study were: fenoxaprop, 0.03 lb ai/A; quinclorac, 0.38 lb ai/A; and halosulfuron, 0.025 lb ai/A, and each of those rates were doubled for the second trial. Fenoxaprop provided good to excellent control of southern crabgrass (Digitaria ciliaris (Retz.) Koeler) and yellow foxtail (Setaria pumila (Poir.) Roem. & Schult.) when applied at 0.06 lb ai/A. Adding halosulfuron at 0.05 lb ai/A, to fenoxaprop antagonized the control of southern crabgrass and yellow foxtail. Southern crabgrass and yellow foxtail shoot weight increased by approximately 28% when halosulfuron was added to fenoxaprop, compared to fenoxaprop applied alone. Adding fenoxaprop to halosulfuron appeared to speed injury development in yellow nutsedge at 2 WAT, although shoot weight at 4 WAT was similar in halosulfuron and halosulfuron plus fenoxaprop-treated plots. Fenoxaprop did not affect yellow nutsedge growth when applied alone. Quinclorac applied alone reduced yellow nutsedge growth. Adding halosulfuron to quinclorac resulted in excellent yellow nutsedge control. Yellow foxtail shoot weight was approximately 23% lower in halosulfuron plus quinclorac-treated plants compared to quinclorac applied alone. Quinclorac suppressed growth of yellow foxtail and adding halosulfuron appeared to improve its control. Adding halosulfuron to quinclorac did not improve southern crabgrass control compared to quinclorac applied alone. For maximum effectiveness, it appears that fenoxaprop and halosulfuron should be applied separately due to antagonism of annual grass control when the two are combined. Quinclorac and halosulfuron can apparently be combined without observable antagonism." |
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| Language: | English |
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| References: | 0 |
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| Note: | This item is an abstract only! |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Rana, A., and J. Derr. 2010. Interaction of fenoxaprop and halosulfuron on herbicide effectiveness. Proc. Annu. Meet. Northeast. Weed Sci. Soc. 64:p. 25. |
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| Web URL(s):
http://www.newss.org/proceedings/proceedings_2010.pdf#page=41
Last checked: 07/22/2013
Requires: PDF Reader
Notes: Item is within a singel large file |
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MSU catalog number: SB 610 .N62 v. 60 |
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