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| Web URL(s): | http://www.newss.org/proceedings/proceedings_1998_vol52.pdf#page=70
Last checked: 07/24/2013
Requires: PDF Reader
Notes: Item is within a single 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): | Bhowmik, P. C.;
Prostak, R. G.;
Fidanza, M. |
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| Author Affiliation: | Bhowmik and Prostak; AgrEvo USA Company, Raleigh, NC 27615. Fidanza: Professor and Technician, Department of Plant and Soil Sciences, University of Massachusetts, Amherst, MA 01003. |
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| Title: | Postemergence control of crabgrass in cool-season turfgrass |
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| Section: | Turfgrass and plant growth regulators Wednesday-January 7, 1998
Other records with the "Turfgrass and plant growth regulators Wednesday-January 7, 1998" Section
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| Meeting Info.: | Washington, DC: January 5-8, 1998 |
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| Source: | Proceedings of the 52nd Annual Meeting of the Northeastern Weed Science Society. Vol. 52, 1998, p. 70. |
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| Publishing Information: | College Park, MD: Northeastern Weed Science Society |
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| # of Pages: | 1 |
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| Keywords: | TIC Keywords: Cool season turfgrasses; Crabgrass control; Digitaria sanguinalis; Herbicide efficacy; Herbicide evaluation; Herbicide injury; Postemergence weed control
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| Abstract/Contents: | "Field experiments were conducted on an established Kentucky bluegrass (Poa pratensis L.) stand to evaluate POST activity of several herbicides in large crabgrass [Digitaria sanguinalis (L.) Scop.] control in 1993, 1994, and 1996. All treatments were applied to 3.5 by 10 ft. plots with a CO₂-backpack sprayer at a pressure of 22 psi in 50 gpa. POST treatments were applied to the 2- to 3-leaf stage (June 16, 1993) and to the 1- to 3-tiller stage (July 8, 1993) of crabgrass. In 1994, POST treatments were applied to 2- to 3-leaf stage (June 5, 1994) and to the 1- to 3-tiller stage (June 23, 1994) of crabgrass. In 1996, POST treatments were applied to the 2- to 3-leaf stage (June 24) and to the 1- to 3-tiller stage (July 9) of crabgrass. Turfgrass injury was rated on a scale of 0 to 100% (0 = no injury and 100 = dead turfgrass). Weed control was estimated on a scale of 0 to 100% (where 0 = no weed control and 100 = complete control) 4, 8, and 12 weeks after treatment (WAT). In 1993, the combination of fenoxaprop and pendimethalin at 0.1 + 1.5 lb/A gave 75% crabgrass control compared to only 32% control with fenoxaprop (0.1 lb/A) or pendimethalin (1.5 lb/A) alone. The similar combinations at 0.2 + 1.5 lb/A gave 97% control compared to 89% control with fenoxaprop (0.2 lb/A) alone. The combination of dithiopyr and MSMA (0.25 + 1.00 lb/A) provided 91% control compared to 67% control with dithiopyr alone, while the combination of fenoxaprop and MSMA at 0.125 +1.0 lb/A gave only 63% control. These treatment combinations, when applied at the 1- to 3- tiller stage, resulted in 70 to 80% control, except the combination of dithiopyr and MSMA (0.25 + 1.0 lb/A) which controlled large crabgrass over 95%. None of these treatments showed any objectionable injury to Kentucky bluegrass. In 1994, the combination of fenoxaprop at 0.1 or 0.2 lb/A with pendimethalin at 1.5 lb/A applied POST at the 1- to 2- tiller stage resulted in over 95% crabgrass control compared to only 75% control with fenoxaprop alone or 30% control with pendimethalin alone 6 WAT. All premix combinations of fexoxaprop and pendimethalin (3.09 EC) at 1.55 or 2.06 lb ai/A, applied at the 4- to 6-leaf stage of crabgrass controlled over 90% 7 WAT in 1996, while the lowest rate (1.03 lb/A) controlled only 73% of crabgrass. Application of these treatments at the 1- to 3-tiller stage of crabgrass resulted in slightly lower crabgrass control compared to the 4- to 6-leaf stage. The tank-mix combination of dithiopyr and fenoxaprop at 0.25 and 0.12 lb/A resulted in over 95% control of crabgrass 9 WAT. No injury to Kentucky bluegrass was observed with any of these treatments." |
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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):
Bhowmik, P. C., R. G. Prostak, and M. Fidanza. 1998. Postemergence control of crabgrass in cool-season turfgrass. Proc. Annu. Meet. Northeast. Weed Sci. Soc. 52:p. 70. |
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| Web URL(s):
http://www.newss.org/proceedings/proceedings_1998_vol52.pdf#page=70
Last checked: 07/24/2013
Requires: PDF Reader
Notes: Item is within a single large file |
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MSU catalog number: SB 610 .N62 v. 52 |
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