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Web URL(s):https://journals.ashs.org/hortsci/view/journals/hortsci/45/2/article-p288.xml
    Last checked: 12/06/2019
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Author(s):Rutledge, James M.; Weisenberger, Daniel V.; Reicher, Zachary J.
Author Affiliation:Rutledge: Graduate Research Assistant; Weisenberger: Research Agronomist; Reicher: Professor, Department of Agronomy, Purdue University, West Lafayett, IN
Title:Response of seedling roughstalk bluegrass and creeping bentgrass to bispyribac-sodium or sulfosulfuron
Section:Turf management
Other records with the "Turf management" Section
Source:HortScience. Vol. 45, No. 2, February 2010, p. 288-292.
# of Pages:5
Publishing Information:Alexandria, VA: American Society for Horticultural Science
Keywords:TIC Keywords: Agrostis stolonifera; Bispyribac-sodium; Herbicide application; Poa trivialis; Seedlings; Sulfosulfuron
Abstract/Contents:"Controlling mature roughstalk bluegrass (Poa trivialis L.; RSBG) using bispyribacsodium (BYS) or sulfosulfuron (SUL) often yields inconsistent results. Attempting to control RSBG shortly after emergence may eliminate or reduce it with fewer inputs and less noticeable creeping bentgrass (Agrostis stolonifera L.; CBG) phytotoxicity than if treated at maturity. The objective of these studies was to determine whether BYS or SUL controls seedling RSBG with only minimal seedling CBG cover reduction. Four separate studies on either CBG or RSBG were conducted in spring or fall of 2007 and repeated in 2008 to simulate spring or fall fairway establishment. Studies were arranged as split plots with application timing (7, 14, 21, or 28 days after CBG emergence) as main plots and subplots were herbicide treatments in a 2 x 5 factorial with BYS or SUL applied once at five uniformly increasing rates of 0, 18, 37, 55, and 74 g·ha1 a.i. and 0, 6, 13, 19, and 26 g·ha-1 a.i., respectively. Plots were maintained at 1.3 cm and emergence was defined as ≅50% of the study area being populated with one- to two-leaf CBG seedlings. Spring-seeded stands of CBG were safely treated with BYS 14 or more days after emergence (DAE) at 55 g·ha-1 a.i. or less, whereas SUL was not safe by 28 DAE at any tested rate. Fall-seeded CBG was generally less sensitive to BYS and SUL. Sulfosulfuron resulted in excessive damage if applied to seedling CBG before 14 DAE at rates greater than 6 g·ha-1 a.i. and if applied before 21 DAE at rates greater than 26 g·ha-1. Bispyribacsodium was safely applied as soon as 7 DAE at rates of 74 g·ha-1 a.i. or less. Chemical names used: {2,6-bis[(4,6-dimethoxypyrimidin-2-yl)oxy] benzoic acid} (bispyribacsodium); {1-[4,6-dimethoxypyrimidin-2-yl]-3-[2-ethanesulfonyl-imidazo sulfonyl]urea} (sulfosulfuron).
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Rutledge, J. M., D. V. Weisenberger, and Z. J. Reicher. 2010. Response of seedling roughstalk bluegrass and creeping bentgrass to bispyribac-sodium or sulfosulfuron. HortScience. 45(2):p. 288-292.
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DOI: 10.21273/HORTSCI.45.2.288
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    Last checked: 12/06/2019
    Requires: PDF Reader
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