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| Web URL(s): | http://www.newss.org/proceedings/proceedings_2001_vol55.pdf#page=104
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.;
Elston, M. |
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| Author Affiliation: | Bhowmik: Professor; and Elston: Graduate Assistant, Department of Plant and Soil Sciences, University of Massachusetts, Amherst, MA |
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| Title: | Crabgrass control in cool-season turfgrasses: Pre- and post-emergence strategies |
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| Section: | Turfgrass and plant growth regulators
Other records with the "Turfgrass and plant growth regulators" Section
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| Meeting Info.: | Boston Marriott Cambridge, Cambridge, MA: January 2, 3, 4, and 5, 2001 |
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| Source: | Proceedings of the 55th Annual Meeting of the NortheasternWeed Science Society. Vol. 55, 2001, p. 104. |
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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: Crabgrass control; Cool season turfgrasses; Preemergence weed control; Postemergence weed control; Poa pratensis; Lolium perenne; Pendimethalin; Oxadiazon; Bensulide; Dithiopyr; Prodiamine; Granules; Application timing; Fenoxaprop-ethyl; Application rates; Quinclorac
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| Abstract/Contents: | "Field experiments were conducted on established stands of Kentucky bluegrass (Poa pratensis L.) or perennial ryegrass (Lolium perenne L.) to evaluate PRE or POST activity of seceral herbicides in large crabgrass [Digitaria sanguinalis (L.) Scop.] control. Treatments were applied to 3.5 by 10 ft. plots with a CO2-backpack sprayer at a pressure of 22 psi in 50 gpa. PRE treatments were applied either in October (Fall PRE) or in April (Spring PRE). POST treatments were applied to 4- to 6-leaf (June) and 1- and 3-tiller (July) crabgrass in 1996 and to 2- to 3-leaf (June) crabgrass in 1998. Weed control was estimated on a scale of 0 to 100% (where 0 = no weed control and 100 = complete control) 4, 7, 9, 35, 40, and 47 weeks after treatment (WAT). In all five trials (1994 to 1997), all treatments applied Fall PRE controlled large crabgrass in the following year (35 to 47 WAT) with no turfgrass injury. Dithiopyr (0.5 and 0.75 lb/A), prodiamine (0.5 and 0.75 lb/A), pendimethalin (0.4 lb/A) and oxadiazon (0.4 lb/A) provided excellent crabgrass control throughout the next growing season. Pendimethalin (3.0 lb/A), oxadiazon (3.0 lb/A) and bensulide (6.0 or 8.0 lb/A), applied Fall PRE did not provide acceptable control of crabgrass in following year. However, Spring PRE treatments of pendimethalin (3.0 lb/A), oxadiazon (3.0 lb/A), dithiopyr (0.38 lb/A) and prodiamine (0.5 lb/A) resulted in excellent crabgrass control throughout the growing season. The granular formulation (0.164 G) of dithiopyr performed better than the EC formulation regardless of the PRE timing of application (Fall or Spring). In 1996, POST treatments of a premix combination of fenoxaprop and pendimethalin (3.09 EC) at 1.55 or 2.06 lb/A, applied to 4- to 6-leaf crabgrass, controlled crabgrass over 90% 7 WAT, while the lowest rate (1.03 lb/A) controlled only 37% of crabgrass. These same treatments when applied to 1- to 3-tiller crabgrass resulted in slightly lower crabgrass control compared the 4- to 6-leaf stage. The tank mix combination of dithiopyr and fenoxaprop at 0.25 and 0.12 lb/A resulted in 95% crabgrass control 9 WAT. None of these treatments showed any objectionable injury to Kentucky bluegrass. In 1998, quinclorac at 0.75 lb/A applied to 3- to 5-leaf crabgrass resulted in excellent crabgrass control 8 WAT. The combinations of quinclorac and pendimethalin (0.75 + 1.5 lb/A) and quinclorac and dimension (0.75 + 0.5 lb/A) provided excellent crabgrass control 8 WAT. In the same trail, fenoxaprop extra (0.116 lb/A) or dithiopyr (0.5 lb/A) controlled crabgrass over 90% 4 WAT, however, the control declined and was not acceptable 8 WAT." |
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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., and M. Elston. 2001. Crabgrass control in cool-season turfgrasses: Pre- and post-emergence strategies. Proc. Annu. Meet. Northeast. Weed Sci. Soc. 55:p. 104. |
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| Web URL(s):
http://www.newss.org/proceedings/proceedings_2001_vol55.pdf#page=104
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. 53 |
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