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| Web URL(s): | http://www.newss.org/proceedings/proceedings_1991_vol45.pdf#page=141
Last checked: 07/24/2013
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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): | Vitolo, D. B.;
Brooks, R.;
Pruss, S. W.;
Porpiglia, P. J. |
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| Author Affiliation: | CIBA-GEIGY Corp., Agrigultural Division, Greensboro, NC |
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| Title: | Response of several turf grasses to CGA-163935 |
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| Source: | Proceedings of the 45th Annual Meeting of the Northeastern Weed Science Society. Vol. 45, 1991, p. 141. |
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| Publishing Information: | Ithaca, NY: Northeastern Weed Science Society |
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| # of Pages: | 1 |
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| Keywords: | TIC Keywords: Trinexapac-ethyl; Growth regulators; Festuca arundinacea; Festuca rubra subsp. rubra; Lolium perenne; Poa pratensis; Stenotaphrum secundatum; Paspalum notatum; Cynodon
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| Abstract/Contents: | "CGA-163935 is a growth regulator being developed by Ciba-Geigy for vegetative inhibition of turfgrass and lodging prevention in cereals and oilseed rape. Effective use rates of CGA-163935 vary from 200 to 1000 g ai/ha. Factors which influence rate include turf species, application timing, environmental conditions, and duration of desired inhibition. Use rates have been selected which provide approximately 50% growth inhibition for four weeks. CGA-163935 was evaluated in 1990 for cool-season turfgrass inhibition in field trials conducted in New York, Illinios, and California. Turfgrass species evaluated included tall fescue (Festuca arundinacea Schreb.), red fescue (Festuca rubra L.), perennial ryegrass (Lolium perenne L.), and Kentucky bluegrass (Poa pratensis L.). CGA-163935 at 1000 g ai/ha applied to tall fescue reduced clipping fresh weights by 50% over a six week period. An 800 g ai/ha rate reduced the number of mowings by 50% over a seven week period. This single 800 g ai/ha application provided mowing reductions comparable to two applications of either 400, 600, or 800 g ai/ha applied 30 days apart. Clipping weights of perennial ryegrass were reduced by 68% over a four week period with 600 g ai/ha of CGA-163935. Fresh weight of perennial ryegrass was reduced 57% over an eight week period following two applications of 800 g ai/ha applied at 30 day intervals. In addition to cool-season turf, CGA-163935 has been tested extensively on St. Augustinegrass (Stenotaphrum secundatum [Walt.] Kuntz), bahiagrass (Paspalum notatum Fluegge), and Bermudagrass (Cynodon dactylon [L.] Pers.) for general turfgrass inhibition and as an edging compound. Single applications of CGA-163935 at 800 g ai/ha reduced the number of mowings of St. Augustinegrass, bahiagrass, and bermudagrass 66%, 57%, and 33%, respectively, for a period of seven weeks. Turfgrass tolerance to CGA-163935 has been excellent. Three successive years of 3000 g ai/ha per year, applied in 1000 g ai/ha increments during the growing season, have shown no adverse effects on tall fescue. Three successive years of 4000 g ai/ha applied in 1000 g ai/ha increments have shown no adverse effects on St. Augustinegrass or bahiagrass, while 1200 g ai/ha, applied in 400 g ai/ha increments, have shown no adverse effects on Kentucky bluegrass or common Bermudagrass for one and two years, respectively." |
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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):
Vitolo, D. B., R. Brooks, S. W. Pruss, and P. J. Porpiglia. 1991. Response of several turf grasses to CGA-163935. Proc. Annu. Meet. Northeast. Weed Sci. Soc. 45:p. 141. |
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| Web URL(s):
http://www.newss.org/proceedings/proceedings_1991_vol45.pdf#page=141
Last checked: 07/24/2013
Requires: PDF Reader
Notes: Item is within a single large file |
| 
MSU catalog number: SB 610 .N62 |
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