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| Web URL(s): | http://www.newss.org/proceedings/proceedings_1987_vol41.pdf#page=72
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): | Cairoli, M. A.;
Glenn, D. S. |
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| Author Affiliation: | Agronomy Dept., University of Maryland, College Park, MD. |
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| Title: | Effects of Top-Clipping on the Translocation of Glyphosate |
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| Meeting Info.: | Held: January 6-8, 1987, Williamsburg, VA. |
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| Source: | Proceedings of the 1987 Annual Meeting of the Northeastern Weed Science Society. Vol. 41, 1987, p. 72. |
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| Publishing Information: | Ithaca, N. Y. : Northeastern Weed Science Society |
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| # of Pages: | 1 |
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| Keywords: | TIC Keywords: Clippings; Translocation; Glyphosate; Sorghum halepense
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| Abstract/Contents: | "Wick bar applications of glyphosate to Johnsongrass that was top-clipped immediately prior to application has been reported to provide greater control and less rhizome regrowth than applications to unclipped plants. Experiments were conducted to determine the absorption and translocation of 14C-clyphosate in unclipped and top-clipped Johnsongrass and the effects to ethrel applications on absorption and translocation of glyphosate. 14 C-clyphosate was applied on the surface in three totally expanded leaves of intact plants (60 cm height) and on the cut surfaces (stem and leaves) of plants top-clipped to 30 cm immediately prior to application (CUT). Plants had been treated previouslyu with glyphosate or glyphosate and ethrel with a forceps-sponge applicator, at the same height. At the end of the period of treatment (10 days) plants were harvested and divided into treated zone, remainder of the treated leaf (only in intact plants), aerial parts, crown, and nodes and internodes from rhizomes. The results demonstrated that the absorption (% of total recovery) was greated in CUT plants treated with glyphosate alone (12.42%) or combined with ethrel (13.25%) compared to the intact plants (4.53 and 3.95% respectively). The higher absorption in CUT plants could be due to the wound providing a direct route of entry of glyphosate into the plant. Translocation of 14 C-clyphosate was greater in CUT plants compared to UNCUT plants. Translocation (% of 14 C recovered) for CUT treatments with glyphosate applied alone (19.7%) or combined with ethrel (21.7%) was significantly greater than that in intact plants treated with glyphosate alone (8.4%) or combined with ethrel (8.5%). Greater Johnsongrass control and reduced rhizome regrowth with wick bar applications of glyphosate to top-clipped plants may be due to more uptake and translocation of glyphosate in CUT plants compared to intact plants." |
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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):
Cairoli, M. A., and D. S. Glenn. 1987. Effects of Top-Clipping on the Translocation of Glyphosate. Proc. Annu. Meet. Northeast. Weed Sci. Soc. 41:p. 72. |
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| Web URL(s):
http://www.newss.org/proceedings/proceedings_1987_vol41.pdf#page=72
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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