Full TGIF Record # 269930
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Web URL(s):https://archive.lib.msu.edu/tic/its/articles/1974sup28b.pdf
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Publication Type:
Content Type:Abstract or summary only
Author(s):Turgeon, A. J.
Author Affiliation:University of Illinois
Title:Annual bluegrass control with herbicides in cool-season turfgrasses
Section:Weeds and insects
Other records with the "Weeds and insects" Section
Meeting Info.:Blacksburg, Virginia: June 19-21, 1973
Source:Abstracts of Papers Presented at the Second International Turfgrass Research Conference. 1973, p. 28-29.
Publishing Information:Blacksburg, Virginia: [International Turfgrass Society]
# of Pages:2
Keywords:TIC Keywords: Agrostis stolonifera; Application timing; Growth analysis; Herbicide evaluation; Poa annua control; Poa pratensis; Preplanting treatment
Abstract/Contents:"The application of herbicides for controlling annual bluegrass (Poa annua L.) infestations should be made in conjunction with cultural practices to improve and maintain suitable growing conditions for desired turfgrasses. Preemergence herbicides should be selected that are least injurious to the particular turfgrass species or cultivar present. Bensulide appears safest for use on creeping bentgrass (Agrostis palustris Huds.) while benefin and DCPA are preferable where Kentucky bluegrass (Poa pratensis L.) is the desired turf. Timing of preemergence applications should conform to the optimum germination periods for annual bluegrass. To avoid turfgrass injury, applications of calcium and lead arsenates should be at low rates during cool weather periods to turfs on well drained soils. Reduction of the seed producing capacity of annual bluegrass has been demonstrated with PO-SANR - a commercial formulation of maleic hydrazide and chlorflureno. Bromacil has been used successfully as a preplant treatment for Kentucky bluegrass on sites where annual bluegrass seed was present. Endothall has provided a selective growth suppression of annual bluegrass in greenhouse studies at specific rates and frequencies of application. Field studies have yielded variable results which were highly dependent upon season of application. Summer and early fall applications of 1.1 Kg/ha or above caused a general browning of the turf followed by a selective recovery of Kentucky bluegrass in 3 to 4 weeks, but moderate to severe injury to creeping bentgrass. Nearly all of the annual bluegrass was dead but reinfestation did occur eventually from seed germination. Granular formulations of endothall selectively controlled annual bluegrass in both Kentucky bluegrass and creeping bentgrass turfs. However, the required rates were dependent upon soil texture, soil organic matter content, and the specific type of annual bluegrass present. Current research employing mixtures of various herbicides is underway to determine whether the advantages of each material can be combined in an integrated program for annual bluegrass control."
Note:This item is an abstract only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Turgeon, A. J. 1973. Annual bluegrass control with herbicides in cool-season turfgrasses. Int. Turfgrass Soc. Annexe - Tech. Pap. p. 28-29.
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