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| Publication Type:
| Refereed |
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| Author(s): | Baker, Robert D.;
McCarty, Lambert B.;
Colvin, Daniel L.;
Higgins, Jeffery M.;
Weinbrecht, Ian S.;
Moreno, Jorge E. |
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| Author Affiliation: | Baker: Former Graduate Research Assistant, Department of Agronomy, University of Florida; McCarty: Professor, Department of Horticulture, Clemson University; Colvin: Professor, Department of Agronomy, University of Florida; Higgins: Assistant Professor, Department of Agronomy, Auburn University; Weinbrecht and Moreno: Graduate Research Assistants, University of Florida |
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| Title: | Bahiagrass (Paspalum notatum) seedhead suppression following consecutive yearly applications of plant growth retardants |
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| Source: | Weed Technology. Vol. 13, No. 2, April-June 1999, p. 378-384. |
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| Publishing Information: | Champaign, IL: Weed Science Society of America. |
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| # of Pages: | 7 |
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| Keywords: | TIC Keywords: Paspalum notatum; Seedhead inhibition; Growth regulators; Application frequency; Glyphosate; Fluazifop; Sethoxydim; Maleic hydrazide; Trinexapac-ethyl; Imazapic; Imazaquin; Color; Seedhead development; Herbicide injury; Application rates
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| Geographic Terms: | Florida |
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| Abstract/Contents: | "Field trials evaluated sequential applications of plant growth retardants (PGRs) to bahiagrass for a 3-yr period at two Florida locations: Newberry (north Florida) and Okeechobee (south Florida). Seven PGRs from various chemical families were used: glyphosate, fluazifop, sethoxydim, maleic hydrazide, trinexapac-ethyl, imazapic, and imazaquin. In 1991 and 1992, PGRs reduced turf color for 2 to 4 wk after treatment (WAT) at the Newberry location but remained above acceptable levels (>5.0) and recovered by 6 WAT. In 1993, glyphosate, fluazifop, and maleic hydrazide reduced turf color below acceptable levels (<5.0) 4 WAT, but turf color was acceptable by 6 WAT. Turf color was slightly reduced following single and sequential imazapic applications in Okeechobee; however, turf recovered by 8 WAT. Cumulative seedhead suppression at both locations increased during the 3 yr resulting in at least a 60% reduction in seedhead numbers. Seedhead production each year was 10 to 50% less at 12 WAT in treated plots than in the previous year. Single applications of imazapic and imazapic + imazaquin provided 85 to 100% seedhead suppression for 12 WAT and 100% suppression for up to 16 wk following sequential applications made 8 wk after the initial application (WAI). Single applications of glyphosate, fluazifop, and maleic hydrazide provided ā„ 70% seedhead suppression for 4 to 8 WAT. Sequential applications of fluazifop made 8 WAI provided >70% control of seedheads through 8 to 16 WAI for 3 yr." |
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| Language: | English |
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| References: | 6 |
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| See Also: | Other items relating to: P G Rs 1997-2006 |
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| Note: | Tables |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Baker, R. D., L. B. McCarty, D. L. Colvin, J. M. Higgins, I. S. Weinbrecht, and J. E. Moreno. 1999. Bahiagrass (Paspalum notatum) seedhead suppression following consecutive yearly applications of plant growth retardants. Weed Technol. 13(2):p. 378-384. |
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MSU catalog number: SB 610 .W44 |
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