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| Web URL(s): | http://www.bioone.org/bioone/?request=get-document&issn=0890-037X&volume=015&issue=02&page=0220
Last checked: 11/2005
Access conditions: Item is within a limited access website |
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| Publication Type:
| Refereed |
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| Author(s): | Zawierucha, Joseph E.;
Penner, Donald |
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| Author Affiliation: | Zawierucha: Technical Representative, BASF Corporation, Research Triangle Park, NC; Penner: Professor, Department of Crop and Soil Sciences, Michigan State University, East Lansing, MI |
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| Title: | Adjuvant efficacy with quinclorac in canola (Brassica napus) and turfgrass |
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| Source: | Weed Technology. Vol. 15, No. 2, April-June 2001, p. 220-223. |
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| Publishing Information: | Champaign, IL: Weed Science Society of America. |
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| # of Pages: | 4 |
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| Keywords: | TIC Keywords: Adjuvants; Quinclorac; Brassica; Digitaria sanguinalis; Eleusine indica; Poa pratensis; Lolium perenne; Festuca arundinacea; Agrostis stolonifera; Surfactants; Growth rate; Oils; Galium aparine; Sonchus oleraceus; Herbicide rates
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| Abstract/Contents: | "Several commercial and experimental adjuvants were evaluated for efficacy in enhancing activity and selectivity of quinclorac in two cultivars of canola and four turfgrass species. Weed species investigated included cleavers, annual sowthistle, large crabgrass, and goosegrass. Turfgrass species evaluated included Kentucky bluegrass, perennial ryegrass, tall fescue, and creeping bentgrass. A variety of adjuvant types were selected, such as methylated seed oil (Sunit II), a petroleum-based crop oil concentrate, the silicone-based Sylgard 309, a cationic fatty amine ethoxylate surfactant (Frigate), and modified crop oils (Dash and Merge). Adjuvant efficacy was evaluated by calculating the quinclorac rate required to reduce plant growth 50% (GR50) based on rates applied at 0, 15.6, 31.2, 62.5, and 125 g ai/ha. For goosegrass, quinclorac rates evaluated were increased to 250, 500, 1,000, and 2,000 g ai/ha. All evaluated adjuvants provided similar enhancement of control for cleavers and annual sowthistle. Sylgard 309 was the least effective adjuvant for control of large crabgrass. Goosegrass was tolerant to quinclorac across the evaluated rate range regardless of adjuvant; therefore, GR50 values could not be determined. None of the adjuvants alone caused phytotoxicity to canola or any turfgrass species." |
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| Language: | English |
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| References: | 11 |
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| Note: | Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Zawierucha, J. E., and D. Penner. 2001. Adjuvant efficacy with quinclorac in canola (Brassica napus) and turfgrass. Weed Technol. 15(2):p. 220-223. |
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| Web URL(s):
http://www.bioone.org/bioone/?request=get-document&issn=0890-037X&volume=015&issue=02&page=0220
Last checked: 11/2005
Access conditions: Item is within a limited access website |
| 
MSU catalog number: SB 610 .W44 |
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