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Web URL(s): | http://www.newss.org/proceedings/proceedings_1984_vol38.pdf#page=315 Last checked: 07/29/2013 Requires: PDF Reader Notes: Item is within a single large file |
Publication Type:
| Report |
Author(s): | Bhowmik, Prasanta C. |
Title: | Effects of growth retardants on turfgrass |
Source: | Proceedings of the Annual Meeting of the Northeastern Weed Science Society. Vol. 38, 1984, p. 315-320. |
Publishing Information: | Ithaca, N. Y. : Northeastern Weed Science Society |
Keywords: | TIC Keywords: Mefluidide; Phytotoxicity; Clipping weight
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Abstract/Contents: | Two formulations (F and G) of a new growth retardant (MON 4621 or MON 4622) were applied to 'Baron' Kentucky bluegrass (Poa pratensis L.) and 'Pennlawn' red fescue (Festuca rubra L.) to assess the growth retarding capability and to evaluate the phytotoxicity and overall quality of turf. Mefluidide was used as a commercial standard for the comparison. Phytotoxicity, vertical height, seedhead suppression, quality, and clipping weight were measured for the evaluation. MON 4621 or MON 4622 at 2.84 to 3.36 kg/ha provided the best combination of growth suppression and commercially acceptable turf quality. The greatest reduction of all growth suppression and commercially acceptable turf quality. The greatest reduction of all growth parameters was noted during the four to six week period after the treatment. The seedhead suppression ranged from 58 to 75% with Kentucky bluegrass and 75 to 83% for red fescue in 1982, while in 1983, it ranged from 97 to 100% for Kentucky bluegrass and 74 to 86% for red fescue. Phytotoxicity to the turfgrasses was minimal in 1982, while 40 to 53% phytotoxicity was observed during 1983 season. The increased phytotoxicity may have been due to the extreme weather conditions. The greatest reduction (56 to 85%) in fresh weight clippings occurred during the four-week period after the application. At six weeks after the application, MON 4621 or MON 4622 reduced the turf growth (clipping weight) by 14 to 63% depending upon the rate. Mefluidide at 0.43 kg/ha gave similar growth reductions except that initial phytotoxicity was severe with the mefluidide treatment. Preliminary field results on the use of MON 4621 or MON 4622 applied to the same turf for two years, showed no adverse effects on the recovery of turf. |
Language: | English |
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete): Bhowmik, P. C. 1984. Effects of growth retardants on turfgrass. Proc. Annu. Meet. Northeast. Weed Sci. Soc. 38:p. 315-320. |
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| Web URL(s): http://www.newss.org/proceedings/proceedings_1984_vol38.pdf#page=315 Last checked: 07/29/2013 Requires: PDF Reader Notes: Item is within a single large file |
| MSU catalog number: SB 610 .N62 |
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