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| Publication Type:
| Refereed |
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| Author(s): | Bevard, Darin S.;
Watschke, Thomas L. |
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| Author Affiliation: | Bevard: Graduate Assistant; and Watschke: Professor of Turfgrass Science, Pennsylvania State University |
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| Title: | Seedling creeping bentgrass (Agrostis stolonifera) tolerance to dithiopyr |
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| Source: | Weed Technology. Vol. 13, No. 2, April-June 1999, p. 216-220. |
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| Publishing Information: | Champaign, IL: Weed Science Society of America. |
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| # of Pages: | 5 |
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| Keywords: | TIC Keywords: Agrostis stolonifera; Herbicide resistance; Establishment; Herbicide injury; Dithiopyr; Application rates; Comparisons; Formulations; Discoloration; Preemergence herbicides; Herbicide evaluation; Crabgrass control; Clipping weight; Turfgrass quality
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| Abstract/Contents: | "Dithiopyr was applied to 'Penneagle' creeping bentgrass seedlings 2, 4, and 8 wk after emergence (WAE) in separate studies in the summers of 1992 and 1993 to determine seedling tolerance. Dithiopyr emulsifiable concentrate (1EC) was applied at 0.14, 0.28, 0.42, and 0.56 kg ai/ha, and granular (G) dithiopyr (0.1G) was applied 0.14, 0.21, 0.28, and 0.42 kg/ha. Dithiopyr applied 2 WAE caused unacceptable injury regardless of rate or formulation. Injury was characterized by stunting of plants, leaf tip die-back, yellowing of older leaves, and a visible decline in quality. Injury increased with increasing rate. In 1992, the EC and G formulation of dithiopyr caused similar responses, whereas in the summer of 1993, the EC caused greater turf injury. Diothiopyr applied 4 WAE caused less injury than when applied 2 WAE, and injury was acceptable. Diothiopyr applied 8 WAE only slightly injured creeping bentgrass at the high rate for both formulations in both years." |
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| Language: | English |
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| References: | 8 |
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| Note: | Tables |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Bevard, D. S., and T. L. Watschke. 1999. Seedling creeping bentgrass (Agrostis stolonifera) tolerance to dithiopyr. Weed Technol. 13(2):p. 216-220. |
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