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| Web URL(s): | http://www.newss.org/proceedings/proceedings_1989_vol43.pdf#page=110
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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| Author(s): | Bhowmik, P. C.;
Bahnson, B. M. |
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| Author Affiliation: | Assoc. Prof. and Research Tech of Weed Sci., Dep. of Plant And Soil Sci., Univ. of Massachusetts |
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| Title: | Pre-and Postemergence Smooth Crabgrass Control with MON-15151 in Cool-Season Turfgrasses. |
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| Source: | Proceedings of the 43rd Annual Meeting of the Northeastern Weed Science Society. Vol. 43, 1989, p. 110. |
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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: Digitaria sanguinalis; Control; Postemergence herbicides; Preemergence herbicides; Lolium perenne; Dithiopyr
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| Abstract/Contents: | "Three field experiments were conducted at the University of Massachusetts Turfgrass Research Center, South Deerfield. The objectives were to i) evaluate preemergence activity on MON 15151 (Monsanto), ii) determine the optimum growth stage of smooth crabgrass [Digitaria ischaemum (Schreb. ex Schweig.) Schreb. ex Muhl.], for postemergence activity, and iii) determine, if any, turf injury. Experiments were conducted on an established perennial ryegrass (Lolium perenne L.) turf maintained at a height of 5 cm under low fertility. Treatments were applied to 1 by 3 plots with a CO2 backpack sprayer at a pressure of 152 kPa in 675 L/ha. The preemergence treatments were applied on April 27, 1988. The postemergence treatments were applied on June 10 and July 7, 1988 when the smooth crabgrasses were at the one-to four-leaf stage and three- to five-tiller stage, respectively. In a 'Penncross' creeping bentgrass (Agrostis palustris Huds.) experiment, postemergence treatments were applied on August 1988. Weed control was rated on July 26 and August 26, 1988. In the preemergence trial, MON-15151 (1EC) and MON-15179 (0.5G) at 0.28 kg/ha controlled smooth crabgrass effectively (95% or better) throughout the growing season without any injury to perennial ryegrass. However, slight injury (10-20%) was noted with the highest rate (1.1 kg/ha). Pendimethalin at 1.5 kg/ha gave similar crabgrass control without any turf injury. In the postemergence trial, MON 15151 at 0.28 kg/ha and higher rates applied at the one- to four-leaf stage controlled smooth crabgrass effectively (90% or better). Late application of MON 15151 at 0.28 kg/ha provided 75% crabgrass control, while the 0.84 kg/ha rate resulted in 94% control. The 0.38 and 0.56 kg/ha rates resulted in 87 and 85% control, respectively, 3 WAT. At 8 WAT, smooth crabgrass control dropped to 64% at the 0.84 kg/ha rate. Similar decline in smooth crabgrass control was observed with fenoxaprop at 0.20 kg/ha. In a bentgrass green trial, 'Penncross' bentgrass was tolerant to MON 15151 up to 1.1 kg/ha. A slight injury (13%) was noted with MON 15151 at 1.68 kg/ha and 22% at 2.2 kg/ha. Bentgrass color or quality was not affected with postemergence treatments of MON 15151. The excellent preemergence activity of MON 15151 in controlling smooth crabgrass over the entire season indicates its potential for use on commercial and home lawns. In addition, postemergence activity of this material will be an additional factor in acceptance of this material." |
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| Language: | English |
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| References: | 0 |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Bhowmik, P. C., and B. M. Bahnson. 1989. Pre-and Postemergence Smooth Crabgrass Control with MON-15151 in Cool-Season Turfgrasses.. Proc. Annu. Meet. Northeast. Weed Sci. Soc. 43:p. 110. |
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| Web URL(s):
http://www.newss.org/proceedings/proceedings_1989_vol43.pdf#page=110
Last checked: 07/25/2013
Requires: PDF Reader
Notes: Item is within a single large file |
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MSU catalog number: SB 610 .N62 |
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