Full TGIF Record # 14629
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Web URL(s):http://www.newss.org/proceedings/proceedings_1989_vol43.pdf#page=90
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Publication Type:
i
Report
Author(s):Harrison, S. A.; Watschke, T. L.
Author Affiliation:Grad. Rsh. Asst. and Prof., Dept. of Agronomy, Penn. St. U.
Title:Pre- + Postemergence Herbicide Combinations for Smooth Crabgrass Control in Turf.
Source:Proceedings of the 43rd Annual Meeting of the Northeastern Weed Science Society. Vol. 43, 1989, p. 90-91.
Publishing Information:Ithaca, NY: Northeastern Weed Science Society
# of Pages:2
Keywords:TIC Keywords: Postemergence herbicides; Digitaria ischaemum; Herbicide combinations; Dithiopyr
Abstract/Contents:"Several studies were conducted in 1988 to evaluate the potential advantage of pre- + Postemergence herbicide tank mixes over individual pre- or postemergence herbicide treatments for single application, full season control of smooth crabgrass (Digitaria ischaemum (Schreb.) Mugl.) in fine turf. herbicides were applied alone according to local use recommendations or as pre-post tank mixes to maximize the benefits of each component. These included: Pendimethalin (1.68 kg/ha), DCPA (11.76 kg/ha), oxadiazon (0.56 to 1.68 kg/ha), MON 15151 (0.14 to 1.12 kg/ha), and MON 15177 (0.14 to 1.12 kg/ha) applied preemergence; fenoxaprop (0.2 kg/ha), MSMA (2.24 kg/ha), MON 15151 (0.56 to 1.68 kg/ha), and MON 15177 ( 0.56 to 2.24 kg/ha) applied postemergence to crabgrass with up to 5 tillers; and pendimethalin + fenoxaprop (1.68 + 0.09 kg/ha), DCPA + MSMA (8.4 + 2.24 kg/ha), oxadiazon + fenoxaprop (0.56 and 1.12 + 2.24 kg/ha) applied as tank mixes to emerging crabgrass. Results of the various studies are presented in Ttable 1. Extreme heat and drought conditions resulted in significant variability in soil moisture, crabgrass germination and stage of growth, and herbicide efficacy. Generally, preemergence herbicides exhibited the most consistent and effective control of smooth crabgrass when applied according to recommendations. Postemergence herbicide activity, particularly from fenoxaprop, was extremely variable in both the pre-post tank mixes and the later postemergence applications. With the exception of the oxadiazon + fenoxaprop tank mix, little benefit was realized from the use of the tank mixes over their individual components at normally recommended timings. MSMA (2.24 kg/ha), applied either once or as a 14 day sequential, was the most efficacious postemergence herbicide. Under less than optimum soil moisture conditions, DCPA + MSMA provided more effective control of 1 to 3 lead crabgrass than pendimethalin + fenoxaprop. Where irrigation was frequent, oxadiazon + fenoxaprop tank mixes were more efficacious than oxadiazon + MSMA when applied to crabgrass beginning to tiller."
Language:English
References:0
Note:Table
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Harrison, S. A., and T. L. Watschke. 1989. Pre- + Postemergence Herbicide Combinations for Smooth Crabgrass Control in Turf.. Proc. Annu. Meet. Northeast. Weed Sci. Soc. 43:p. 90-91.
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http://www.newss.org/proceedings/proceedings_1989_vol43.pdf#page=90
    Last checked: 07/25/2013
    Requires: PDF Reader
    Notes: Item is within a single large file
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