Full TGIF Record # 12498
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Publication Type:
Author(s):Turmail, Arlene M.; Jordan, Thomas N.
Author Affiliation:Turmail: Research Assistant; Jordan: Associate Professor, Department of Botany and Plant Pathology, Purdue University, W. Lafayette, IN
Title:Effects of three postemergence herbicides on yellow and purple nutsedge
Section:Physiology, edapic factors and control of specific weeds
Other records with the "Physiology, edapic factors and control of specific weeds" Section
Meeting Info.:Winnipeg, Manitoba, Canada: December 4-6, 1984
Source:Proceedings: North CentralWeed Control Conference. Vol. 39, 1984, p. 82-83.
# of Pages:2
Publishing Information:[Urbana, Illinois: Department of Agronomy, University of Illinois]
Keywords:TIC Keywords: Translocation; Postemergence herbicides; Cyperus esculentus; Cyperus rotundus; Glyphosate; Glufosinate
Abstract/Contents:"Greenhouse and growth chamber studies were used to evaluate the response of yellow (Cyperus esculentus) L. and purple (C. rotundus) L. nutsedge to glyphosate, sulphosate and glufosinate. Each herbicide was applied to both species at 0.5 or 1 kg/ha and plant foliage was clipped at the soil surface at 24, 48, 72 or 96h after treatment. Plant response to herbicide translocation was determined by percent shoot regrowth, fresh weight of foliar regrowth and percent germination of daughter tubers. All herbicides reduced yellow nutsedge regrowth by at least 30% over the untreated control after 24h. After 48h, all herbicides reduced regrowth by at least 74% of the untreated control. Purple nutsedge was more tolerant to the herbicides than yellow nutsedge as indicated by greater shoot regrowth. After 24h, glufosinate reduced regrowth over sulphosate and glyphosate. All 0.5 kg/ha herbicide treatments produced significantly greater regrowth than 1 kg/ha treatments at each clipping interval. Yellow nutsedge fresh weight results were similar to regrowth results, reducing weights by more than 60% of the untreated control. Purple nutsedge fresh weights from the 1 kg/ha treatments were reduced over the 0.5 kg/ha treatments and the untreated control. Sulphosate and glyphosate at 1 kg/ha reduced tuber germination to 33 and 49% of the control by 48 and 96h respectively. No other treatments reduced germination to less than 50% of the control. Although glufosinate at 1 kg/ha reduced regrowth and fresh weight of purple nutsedge, only sulphosate at 1 kg/ha showed potential for reducing tuber germination. Growth chamber studies were used to evaluate effects of temperature on regrowth of yellow nutsedge after herbicide treatments. At both 21C and 32C, regrowth was reduced by all herbicides over the untreated control. Percent regrowth was reduced more at 32C than at 21C. Glyphosate and sulphosate treatments at 21C and 32C reduced regrowth to less than 25% of the control. Glufosinate treated nutsedge responded more at 32C than at 21C conditions."
Note:This item is an abstract only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Turmail, A. M., and T. N. Jordan. 1984. Effects of three postemergence herbicides on yellow and purple nutsedge. Res. Rep. North Cent. Weed Control Conf. 39:p. 82-83.
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