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| Web URL(s): | http://www.newss.org/proceedings/proceedings_1977_vol31.pdf#page=378
Last checked: 07/25/2013
Requires: PDF Reader
Notes: Item is within a single large file |
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| Publication Type:
| Report |
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| Author(s): | Watschke, T. L.;
Wehner, D. J.;
Duich, J. M. |
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| Title: | Initial and residual effects of growth regulators on a Pennstar-Flyking Kentucky bluegrass blend |
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| Source: | Proceedings of the Annual Meeting of the Northeastern Weed Science Society. Vol. 31, 1977, p. 378-389. |
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| Publishing Information: | Ithaca, NY: Northeastern Weed Science Society |
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| Keywords: | TIC Keywords: Fluoridamid; Mefluidide; Growth regulators; Drechslera; Ustilago striiformis
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| Trade Names: | Sustar |
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| Abstract/Contents: | Sustar (3-trifluoromethyl-sulfonamido-p-acetotoluidide), MH (1,2-dihydro-3,6-pyridazinedione), and mefluidide N-[2,4-dimethyl-5-[[(trifluoromethyl)sulfonyl] phenyl] amino] phenyl] acetamide were applied in three separate experiments, to a 'Pennstar' - 'Flyking' Kentucky bluegrass blend to evaluate growth retardation, injury, and residual effects. The first experiment was not mowed, and three weeks after application, turf treated with growth regulators was shorter than untreated. Two weeks after application, granular formulations of mefluidide were rated to have caused more discoloration than either the liquid formulation of Sustar. The second experiment was mowed on a weekly basis after clipping weights were taken. All mefluidide treatments retarded growth more than MH while discoloration was similar. Growth retardation lasted for approximately five weeks. The third experiment was similar to the second, except that nitrogen fertilizer (urea) was applied. The results of this test were similar to experiment two except that retardation lasted only four weeks and was followed by a growth stimulation. Reapplication at reduced rates suppressed this growth stimulation, but treated and untreated turf grew at approximately the same rate. One year following treatment, experiments two and three were rated for density. The high rates of mefluidide and Sustar caused reductions in turf density. This lack of density was partially the result of increased disease activity (both leaf spot, Helminthosporium spp. and stripe smut, Ustilago striiformis). The 0.25G formulation of mefluidide caused less injury than liquid and should be tested further. |
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| Language: | English |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Watschke, T. L., D. J. Wehner, and J. M. Duich. 1977. Initial and residual effects of growth regulators on a Pennstar-Flyking Kentucky bluegrass blend. Proc. Annu. Meet. Northeast. Weed Sci. Soc. 31:p. 378-389. |
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| Web URL(s):
http://www.newss.org/proceedings/proceedings_1977_vol31.pdf#page=378
Last checked: 07/25/2013
Requires: PDF Reader
Notes: Item is within a single large file |
| 
MSU catalog number: SB 610 .N62 |
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