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Web URL(s): | http://www.newss.org/proceedings/proceedings_2000_vol54.pdf#page=121 Last checked: 07/24/2013 Requires: PDF Reader Notes: Item is within a single large file |
Publication Type:
| Report |
Content Type: | Abstract or Summary only |
Author(s): | Taylorson, R. B. |
Author Affiliation: | Adjunct Professor, Department of Plant Sciences, University of Rhode Island, Kingston, RI |
Title: | Efficacy of dithiopyr formulations for preemergence annual grass control |
Section: | Turfgrass and plant growth regulators Other records with the "Turfgrass and plant growth regulators" Section
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Meeting Info.: | Baltimore, MD: January 3-6, 2000 |
Source: | Proceedings of the 54th Annual Meeting of the Northeastern Weed Science Society. Vol. 54, 2000, p. 121. |
Publishing Information: | College Park, MD: Northeastern Weed Science Society |
# of Pages: | 1 |
Keywords: | TIC Keywords: Formulations; Comparisons; Dithiopyr; Festuca rubra; Poa pratensis; Digitaria ischaemum; Crabgrass control
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Abstract/Contents: | "The study was conducted during 1999 ath the University of Rhode Island turf research farm on a 7-year old stand of Kentucky bluegrass (Poa pratensis) and creeping red fescue (Festuca rubra) mowed at 1.75 inches. The formulations of dithiopyr were applied to plots six feet wide by eight feet long with a two foot untreated strip between adjacent plots. There were four replicates in a randomized complete block design. All treatments were applied on April 21, 1999 with either a backpack sprayer at 48 GPA or a Gandy drop spreader. Ratings of smooth crabgrass (Digitaria ischaemum) control were taken at approximately four-week intervals over a 20 week period using a 0-10 scale with 0 being no control and 10 perfect control. Ratings of 7 or below would be unsatisfactory control. The plots were also rated for turf injury but none was observed from any treatment. Rates of application were 0.18 and 0.25 ai/A for all formulations. The formulations examined included the 1EC, 0.072 and 0.164% granulars, a 40% WP, and a 2.32 and 2.52 lb/gal SL. After 20 weeks, unacceptable control ratings were given by both rates of the EC, and the low rates of the granular and WP. The most effective treatments (in ascending order) were the WP at 0.25 lb/A, the 2.32 SL at 0.25 lb/A and the 2.52 SL at both the 0.18 and 0.25 rates. Ratings for the latter were 8.6 and 9.2 respectively." |
Language: | English |
References: | 0 |
Note: | This item is an abstract only! |
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete): Taylorson, R. B. 2000. Efficacy of dithiopyr formulations for preemergence annual grass control. Proc. Annu. Meet. Northeast. Weed Sci. Soc. 54:p. 121. |
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| Web URL(s): http://www.newss.org/proceedings/proceedings_2000_vol54.pdf#page=121 Last checked: 07/24/2013 Requires: PDF Reader Notes: Item is within a single large file |
| MSU catalog number: SB 610 .N62 v. 54 |
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