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| Web URL(s): | http://www.newss.org/proceedings/proceedings_1973_vol27.pdf#page=315
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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| Content Type: | Abstract or Summary only |
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| Author(s): | Watschke, T. L.;
Duich, J. M.;
Long, F. W. |
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| Title: | Seedhead Inhibition and Postemergence Poa Annua Control on Turfgrass Areas |
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| Source: | Proceedings of the Annual Meeting of the Northeastern Weed Science Society. Vol. 27, 1973, p. 315. |
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| Publishing Information: | Ithaca, N. Y. : Northeastern Weed Science Society |
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| Keywords: | TIC Keywords: Endothall; Poa annua; Maleic hydrazide; Poa pratensis
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| Abstract/Contents: | "Evaluation of 7-oxabicyclo [2.2.1] heptane-2,3-dicarboxylic acid (Endothall) and the combination of the diethanolamine salt of 6-hydroxy-3-(2H)-pyridazinone (MH) with a mixture of chlorfluorinals (Methyl 2-chloro-9-hydroxyfluorene-9-carboxylate; methyl 9-hydroxyfluorene-9-hydroxfluorene-9-carboxylate; oxylate; methyl 2,7-dichloro-9-hydroxflourene-9-carboxylate) for spring seedhead inhibition and fall postemergence control of Poa annua was made for two years on golf course fairways. Rates and timings were varied in an attempt to develop a repeatable success pattern. Weather conditions also influence effectiveness. Seedhead inhibition with chlorfluorinal plus MH varied from 50% to 95% depending on rate and timing. On occasion, rates required for 95% inhibition caused intolerable injury. Endothall rates necessary for 90% seedhead inhibition consistently resulted in unacceptalbe discoloration. Fall application of the chlorfluorinal and MH combination appeared promising for early postemergence control when Poa annua encroachment was approximately 40%. Postemergence control of two-leaf stage and younger seedlings, and stunting of mature plants caused grass populations to shift toward Kentucky bluegrass (Poa pratensis L.). Experimental granular endothall also appeared to have excellent potential for postemergence control of mature Poa annua in preliminary studies this past year. Applications made to 'Merion' Kentucky bluegrass resulted in selective vegetative control of a 30% Poa annua invasion, with no apparent injury to the bluegrass. Investigation of tolerance by other turfgrasses and confirmation of rate and timing is necessary." |
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| Language: | English |
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| References: | 0 |
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| Note: | This item is an abstract only! |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Watschke, T. L., J. M. Duich, and F. W. Long. 1973. Seedhead Inhibition and Postemergence Poa Annua Control on Turfgrass Areas. Proc. Annu. Meet. Northeast. Weed Sci. Soc. 27:p. 315. |
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| Choices for finding the above item: |
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| Web URL(s):
http://www.newss.org/proceedings/proceedings_1973_vol27.pdf#page=315
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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Digitally in TIC by file name: newss1973 |
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