Full TGIF Record # 69834
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Author(s):Kopec, D. M.; Heathman, E. S.; Mancino, C. F.; Dobrenz, A. K.; Moharram, H. N.; Umeda, Kai
Author Affiliation:Kopec: Associate Extension Specialist, Plant Sciences; Heathman: Extension Specialist, Weed Control, Retired, Plant Sciences; Mancino: Assistant Professor, Turfgrass Science , Plant Sciences; Dobrenz; Moharram: Graduate Associate in Research-Turf, Plant Sciences; University of Arizona; and Umeda, Field Research Agriculturist-American Cyanamid Company
Title:Response of purple nutsedge to turfgrass competition and imazaguin herbicide
Source:1991 Turfgrass and Ornamentals Research Summary[Arizona]. 1991, p. 51-54.
# of Pages:4
Publishing Information:Tucson, AZ: University of Arizona
Keywords:TIC Keywords: Cyperus rotundus; Competition; Imazaquin; Herbicides; Weed control; Cultivar evaluation; Mowing height; Herbicide evaluation
Cultivar Names:Midiron; Tifway
Abstract/Contents:"Purple nutsedge (Cyperus rotundus) is a persistent weed in lower elevation turfs in Arizona. Its high elongation rate, coarse leaf texture, and light green color are objectionable in turfgrass stands. This study was conducted to determine the effects of turfgrass cultivar, mowing height and imazaquin herbicide on purple nutsedge suppression over the 1988 and 1989 growing seasons. Nutsedge infestations were monitored after three applications in 1988 and 1989, totalling six applications, each at the 0.56 Kg/ha rate. During both years, 'Midiron' bermuda was not as competitive as 'Tifway' bermudagrass when no herbicide was applied. 'Midiron' was influenced by mowing, allowing for 60 cm² infestation levels at the low (1.9cm) mowing height during midsummer of both years. With repeat applications, purple nutsedge was greatly reduced during the first year (1988), and essentially eliminated in the more aggressive 'Tifway' turf after an early summer application in year two (1989). Mowing height was not significant when the herbicide was applied. This data shows that both competitive (grass type and mowing height) and herbicide effects are effective in reducing puruple nutsedge infestation levels in turfgrass stands under conditions of this test."
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Kopec, D. M., E. S. Heathman, C. F. Mancino, A. K. Dobrenz, H. N. Moharram, and K. Umeda. 1991. Response of purple nutsedge to turfgrass competition and imazaguin herbicide. Turfgrass Landscape Urban IPM Res. Summ. p. 51-54.
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