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Web URL(s): | http://www.bioone.org/bioone/?request=get-document&issn=0890-037X&volume=016&issue=03&page=0612 Last checked: 03/29/2016 Access conditions: Item is within a limited access website |
Publication Type:
| Refereed |
Author(s): | Wehtje, Glenn;
Walker, Robert H. |
Author Affiliation: | Professors, Department of Agronomy and Soils, Auburn University, Auburn, AL |
Title: | Response of two annual bluegrass varieties to preemergence and postemergence rimsulfuron |
Source: | Weed Technology. Vol. 16, No. 3, July-September 2002, p. 612-616. |
Publishing Information: | Champaign, IL: Weed Science Society of America. |
# of Pages: | 5 |
Keywords: | TIC Keywords: Poa annua control; Preemergence herbicides; Postemergence herbicides; Rimsulfuron; Application methods; Application timing; Adjuvants
|
Trade Names: | Renex-30 |
Abstract/Contents: | "In greenhouse studies, flowering annual bluegrass Poa annua L. var. annua (winter annual) and P. annua L. var. reptans (short-lived perennial) were treated postemergence with rimsulfuron at 54 g ai/ha in such a manner as to permit herbicide interception only by the foliage, interception only by the soil, and interception by both foliage and soil, as would occur in a typical application. The foliar-only, soil-only, and soil + foliar applications provided 57, 73, and 84% control, respectively, as averaged over all other experimental variables. Greater efficacy of the soil-only and soil + foliar applications indicated the importance of root absorption for annual bluegrass control with rimsulfuron. Adjuvant addition was beneficial to postemergence activity only at 18 g/ha, which is below the registered rate. Adjuvant-based control improvement at this rate was inconsistent and generally independent of the adjuvant type. Adding Renex-30 to 18 g/ha of rimsulfuron did increase control on an average from 16 to 51%. Postemergence efficacy was also independent of the annual bluegrass variety and growth media (field soil vs. a sand-peat mixture). Preemergence activity of rimsulfuron against germinating annual bluegrass seeds was slightly greater in the sand-peat mixture than in the soil and with var. annua than with var. reptans, and on uncovered seed compared with 0.5-cm-deep growth media covered seeds." |
Language: | English |
References: | 11 |
Note: | Tables |
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete): Wehtje, G., and R. H. Walker. 2002. Response of two annual bluegrass varieties to preemergence and postemergence rimsulfuron. Weed Technol. 16(3):p. 612-616. |
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| Web URL(s): http://www.bioone.org/bioone/?request=get-document&issn=0890-037X&volume=016&issue=03&page=0612 Last checked: 03/29/2016 Access conditions: Item is within a limited access website |
| MSU catalog number: SB 610 .W44 |
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