Full TGIF Record # 65377
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Web URL(s):http://www.newss.org/proceedings/proceedings_2000_vol54.pdf#page=116
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Author(s):Davis, J. G.; Dernoeden, P. H.; Krouse, J. M.
Author Affiliation:Davis: Graduate Research Assistant, Department of Natural Resource Science and Landscape Architecture, University of Maryland, College Park, MD; Dernoeden: Professor, Department of Natural Resource Sciences and Landscape Architecture, University of Maryland, College Park, MD; Krouse: Research Associate, Department of Natural Resource Sciences and Landscape Architecture, University of Maryland, College Park, MD
Title:Preemergence smooth crabgrass and broadleaf weed control in Maryland, 1998-1999
Section:Turfgrass and plant growth regulators
Other records with the "Turfgrass and plant growth regulators" Section
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. 116-117.
Publishing Information:College Park, MD: Northeastern Weed Science Society
# of Pages:2
Keywords:TIC Keywords: Herbicide evaluation; Formulations; Comparisons; Preemergence weed control; Digitaria ischaemum; Crabgrass control; Broadleaf weed control; Oxalis stricta; Euphorbia maculata; Lolium perenne; Dithiopyr; Prodiamine; Pendimethalin; Oxadiazon; Quinclorac
Geographic Terms:Maryland
Abstract/Contents:"Three studies were conducted to evaluate herbicies for preemergence smooth crabgrass (Digitaria ischaemum) [Schreb.] Muhl.), yellow woodsorrel (Oxalis stricta L.), and spottted spurge (Euphorbia maculata L.) control in perennial ryegrass (Lolium perenne L.). Sprayable herbicies were applied in 50 gpa with a CO₂ pressurized (35 psi) backpack sprayer equipped with an 8004E nozzle. Granulars were applied using a shaker bottle. All sites were irrigated within 24 hrs prior to and after each herbicide application and thereafter to prevent wilting of the turf. Plots measured 5 by 5 ft. and were arranged in a randomized complete block with four replicates. Percent of plot area covered with crabgrass, woodsorrel, and spurge was assessed using a visual 0 to 100% linear scale where 0 = no weeds and 100 = entire plot area covered with weeds. Treatments with crabgrass cover ratings exceeding 5% were considered to be commercially unacceptable. Data were subjected to analyses of variance and significantly different means were separated by the least significant difference test (p=0.05). In study I, crabgrass pressure was severe, and all treatments reduced smooth crabgrass cover significantly. Except for Dimension (dithiopyr) 1EC and 0.1G applied at 0.25 lb ai/A, all other dithiopyr treatments (i.e., 40WP and SC-102098 2.3 and 2.5 SC), applied at 0.25 and 0.38 lbs ai/A, and Barricade (prodiamine) 65DG (0.65 lb ai/A) provided acceptable crabgrass control. There were no significant woodsorrel or spurge cover differences among the treatments. In study II, crabgrass pressure was severe, and all treatments reduced crabgrass cover significantly (Table 1.). Only Dimension 0.1G (0.38 lb ai/A) provided complete control, but Team Pro (benefin + trifluralin) (1.5 + 1.5 lb ai/A) and TADS 13173 2G (oxadiazon) (4.0 lb ai/A) provided equivalent levels of acceptable crabgrass control. Good control was provided by pendimethalin 0.86G (1.5 + 1.5 lb ai/A) and TADS 13172 2G (4.0 lb ai/A). All other treatments provided unacceptable crabgrass control. There were few woodsorrel and spurge plants in the control plots due to competition from the earlier germinating crabgrass. Therefore, data were analyzed without using the data from the untreated control. Team Pro (1.5 + 1.5 and 2.0 lb ai/A), and pendimethalin 0.86G (1.5 + 1.5 and 2.0 lb ai/A) provided excellent preemergence woodsorrel control. Plots receiving Dimension 0.1G (0.38 lb ai/A) were free of woodsorrel. Except for TADS 13172 2G (2.0 lb ai/A), none of the oxadiazon treatments reduced woodsorrel cover when compared to Team Pro (1.5 + 1.5 and 2.0 lb ai/A), pendimethalin 0.86G (1.5 + 1.5 and 2.0 lb ai/A), and Dimension 1EC (0.25 + 0.25 lb ai/A). None of the treatments reduced spurge cover significantly. Crabgrass pressure in study III was moderate Drive (quinclorac) treatments provided little or no preemergence crabgrass or woodsorrel control (Table 2.). Only Pendulum 3.3EC (pendimethalin) (1.5 + 1.5 lb ai/A) and Pendulum 2G (1.5 + 1.5 and 3.0 lb ai/A) provided acceptable crabgrass and woodsorrel control."
Language:English
References:0
Note:Tables
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Davis, J. G., P. H. Dernoeden, and J. M. Krouse. 2000. Preemergence smooth crabgrass and broadleaf weed control in Maryland, 1998-1999. Proc. Annu. Meet. Northeast. Weed Sci. Soc. 54:p. 116-117.
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http://www.newss.org/proceedings/proceedings_2000_vol54.pdf#page=116
    Last checked: 07/24/2013
    Requires: PDF Reader
    Notes: Item is within a single large file
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