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| Web URL(s): | https://dl.sciencesocieties.org/publications/aj/pdfs/85/3/AJ0850030560
Last checked: 12/14/2016
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Access conditions: Item is within a limited-access website |
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| Publication Type:
| Refereed |
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| Author(s): | Dernoeden, P. H.;
Christians, N. E.;
Krouse, J. M.;
Roe, R. G. |
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| Author Affiliation: | Department of Agronomy, University of Maryland, College Park, MD; Department of Horticulture, Iowa State University, Ames, IA |
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| Title: | Creeping bentgrass rooting as influenced by dithiopyr |
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| Source: | Agronomy Journal. Vol. 85, No. 3, May/June 1993, p. 560-563. |
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| Publishing Information: | Washington: American Society of Agronomy |
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| # of Pages: | 4 |
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| Keywords: | TIC Keywords: Agrostis stolonifera; Rooting; Dithiopyr; Foliage; Herbicide application; Preemergence herbicides
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| Abstract/Contents: | "Dithiopyr [3, 5 - pyridinedicarbothioic acid, 2 - (diflurormethyl) - 4(2 - methylpropyl) - 6 - trifluoromethyl) S, S - dimethyl ester] is a new herbicide, but its foliar safety and potential rooting effects need to be documented before its use on creeping bentgrass (Agrostis palustris Huds.) can be recommended. Field studies were conducted at five separate sites in Iowa and in Maryland, where creeping bentgrass was grown on modified sandy soils and maintained at putting green height. Three dithijkfdi ations (1.0 emulsifiable concentrate, 0.10 granular, 0.25 granular) at rates ranging from 0.28 to 0.84 kg ha-1 were compared with label rates of either bensulide kdi O - bis (1 - methylethyl) S - (2 - [(phenylsulfonyl) amino] ethyl] phosphorodithioate] or bensulide + oxadiazon [3 - [2 - 4 - dichloro - 5 - (1 - methylethoxy) phenyl] - 5 - (1, 1 - dimethylethyl) - 1, 3, 4 - oxadiazol - 2 - (3H) - one] or DCPA [dimethyl 2, 3, 5, 6 - te - trachloro - 1, 4 - benzenedicarboxylate] for potential rooting and foliar discoloration effects. Root masses were obtained from washed soil plugs, which were combusted to determine root weight. In Iowa all herbicides reduced total root weight on one of four sampling dates in 2 yr. No rooting differences were observed among herbicide rates or formulations at soil depths partitioned at 0 to 5, 5 to 10, 10 to 15, or 15 to 20 cm. Reduced root weight was observed with all herbicides on at least one of nine sampling dates in Maryland. Root weight reduction in Maryland studies was observed primarily within 29 d of treatment (DAT) in 1990, but not within 57 DAT in 1990 or on six sampling dates in 1991. No foliar discoloration was elicited by dithiopyr applied in either April or May. Discoloration and cover reduction occurred where dithiopyr 1.0 EC (0.84 kg ha-1) and bensulide + oxadiazon (6.7 + 1.7 kg ha-1) were applied in mid-June in Maryland. Overall, data indicate that dithiopyr (0.28 - 0.84 kg ha-1) had an acceptable safety margin for creeping bentgrass foliage and rooting on putting greens when applied preemergence in spring." |
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| Language: | English |
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| References: | 15 |
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| Note: | Tables |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Dernoeden, P. H., N. E. Christians, J. M. Krouse, and R. G. Roe. 1993. Creeping bentgrass rooting as influenced by dithiopyr. Agron. J. 85(3):p. 560-563. |
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| Web URL(s):
https://dl.sciencesocieties.org/publications/aj/pdfs/85/3/AJ0850030560
Last checked: 12/14/2016
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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MSU catalog number: S 22 .A45 |
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