Full TGIF Record # 42212
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Web URL(s):http://www.newss.org/proceedings/proceedings_1997_vol51.pdf#page=37
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Publication Type:
i
Report
Content Type:Abstract or Summary only
Author(s):Watschke, T. L.; Borger, J. A.
Author Affiliation:Professor and Research Assistant, Department of Agronomy, Penn State University
Title:Preemergence control of smooth crabgrass in 1996
Meeting Info.:Newport, RI; January 6-9, 1997
Source:Proceedings of the 51st Annual Meeting of the Northeastern Weed Science Society. Vol. 51, 1997, p. 37.
Publishing Information:College Park, MD: Northeastern Weed Science Society
# of Pages:1
Keywords:TIC Keywords: Cool season turfgrasses; Crabgrass control; Herbicide combinations; Herbicide efficacy; Herbicide evaluation; Preemergence herbicides; Preemergence weed control
Abstract/Contents:"Twenty-six preemergence herbicide treatments were applied to a mixed stand of cool season turfgrasses at the Landscape Management Research Center, University Park, PA. As several treatments were applied using fertilizer as a carrier, all treatments regardless of carrier were maintained at the same nitrogen fertility level. Date of application was April 25 and 26, May 2, and June 8 for sequential treatments. Germination of crabgrass was first observed on May 13. Sprayed applications were made using a hand held CO₂ boom sprayer with 6504 nozzles at 30 psi calibrated to deliver 80 gpa. Granular formulations were applied using a shaker jar. Irrigation was applied after application (approximately 0.5 inch) and at various times during the course of the study to maintain the turf free of dormancy. Crabgrass control was rated on August 20, 1996. No phytotoxicity was observed during the course of the study. S-6617 at a product rate of 109.3 lbs/A applied sequentially, S-6619 at a product rate of 109.3 lbs/A applied sequentially, oxadiazon as a rate of 3 lbs ai/A, pendimethalin on Scott's 22-0-6, pendimethalin on 18-5-9 at a rate of 2 lbs ai/A, prodiamine 65WG at rates of 0.48, 0.65, and 0.75 lbs ai/A, prodiamine at an initial rate of 0.5 followed by 0.25 eight weeks later, prodiamine at a rate of 0.65 and 0.75 lbs ai/A on fertilizer, prodiamine at a rate of 0.5, 0.65 and 0.75 on Lebanon fertilizer, dithiopyr 1 EC at a rate of 0.18, 0.25, and 0.38, AD 443 and AD 445 at rates of dithiopyr of 0.18 and 0.25, respectively, all provided at least 90% control of smooth crabgrass which was considered to be commercially acceptable. Several of the above materials were applied at lower rates and at lower rates sequentially; however, in all cases, control of smooth crabgrass was not found to be acceptable. Dithiopyr on fertilizer did have control rated at 88 and 89% for rates of 0.06 and 0.09 lbs ai/A, respectively. Clearly, the potential for dithiopyr/fertilizer combinations to provide and acceptable level of control at very low rates appears possible.
Language:English
References:0
Note:This item is an abstract only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Watschke, T. L., and J. A. Borger. 1997. Preemergence control of smooth crabgrass in 1996. Proc. Annu. Meet. Northeast. Weed Sci. Soc. 51:p. 37.
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http://www.newss.org/proceedings/proceedings_1997_vol51.pdf#page=37
    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. 51
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