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| Web URL(s): | http://www.newss.org/proceedings/proceedings_1991_vol45.pdf#page=144
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): | Sciarappa, William J. |
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| Author Affiliation: | Field Development, Agricultural Chemicals, BASF, Neptune, NJ |
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| Title: | BAS 514 H - approaches to selectivity and efficacy in bentgrass and bluegrass |
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| Source: | Proceedings of the 45th Annual Meeting of the Northeastern Weed Science Society. Vol. 45, 1991, p. 144. |
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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: Quinclorac; Poa pratensis; Agrostis stolonifera
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| Abstract/Contents: | "Field studies were conducted in 1990 with BAS 514 H [BASF - quinchlorac/proposed] in order to improve efficacy against buckhorn/narrowleaf plantain [Plantago lanceolata L.] in Kentucky bluegrass [Poa pratensis L.] turf and to improve selectivity in Penncross creeping bentgrass [Agrostis palustris Huds.] turf while controlliong hairy crabgrass [Digitaria sanguinalis L.]. Control of buckhorn plantain in bluegrass with a single postemergence application of BAS 514 H at .38, .5, .75 or 1.0 lbs ai/a plus surfactant [BAS 090 02 S at 1 qt/a] during early June, mid July or late September ranged from ca. 30 to 60%. Sequential applications at low rates 30 days after the first spray significantly improved control at the mid-summer period. Sequential applications of BAS 514 H [0.75 + .25 lbs ai/a, .5 + .5 lbs ai/a or .375 + .375 lbs ai/a] achieved over 90% control. No injury occurred at any treatment rate to Kentucky bluegrass. Control of tillered hairy crabgrass in bentgrass was related to rate of BAS 514 H and the mowing height. Lower cut crabgrass was controlled more easily and higher rates provided better efficacy. At .38 lbs ai/a, control ranged from 70% [3/16 inch cut] to 52% [1 to 2 inch cut]. At .5 and .75 lbs ai/a, control ranged from 59% to 78% and from 83% to 93%, respectively. Sequential applications of .5 lbs ai/a increased control at all rates and mowing heights to over 90%. Bentgrass tolerance to BAS 514 H showed an integrated relationship of rate, mowing height, and the use of a chelated iron source coupled with a low burn, timed release, liquid nitrogen fertilizer. Shorter mowing heights and higher rates decreased turf quality. At 7 days after treatment, the untreated bentgrasss turf was rated as 8 on a color/quality scale of 1 to 10. Quality of bentgrass treated with BAS 514 H at .75 lbs ai/a averaged 5.83 in the 3/16 inch putting green cut, 6.50 in the 5/16 inch collar cut, 7.17 in the .5 inch fairway cut and 7.24 in the 1 to 2 inch rough cut. At .5 and .38 lbs ai/a, quality improved and was rated respectively at 6.33 and 6.33 in the green, 7.33 and 8.0 in the collar, 7.83 and 8.0 in the fairway and 7.33 and 7.5 in the rough. The inclusion of the iron chelate/low burn fertilizer into the .75 lb ai/a rate of BAS 514 H improved turf quality dramatically to 7.17, 7.50, 7.67 and 7.67 at the increasing mowing heights. Similar trends were recorded 20 and 42 days after initial treatments. Single or sequential applications of BAS 514 H late in the season at .5 lbs ai/a + BAS 090 02 S surfactant, iron chelate and liquid N fertilizer showed exceptional safety at all heights." |
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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):
Sciarappa, W. J. 1991. BAS 514 H - approaches to selectivity and efficacy in bentgrass and bluegrass. Proc. Annu. Meet. Northeast. Weed Sci. Soc. 45:p. 144. |
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| Web URL(s):
http://www.newss.org/proceedings/proceedings_1991_vol45.pdf#page=144
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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