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| Web URL(s): | http://www.newss.org/proceedings/proceedings_1989_vol43.pdf#page=104
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): | Hurto, K. A.;
Schaber, L. |
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| Author Affiliation: | Senior Research Scientist and Research Assoc., ChemLawn Services Corp. |
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| Title: | Preemergence Activity of MON 15151 for Smooth Crabgrass Control in Kentucky Bluegrass Turf. |
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| Source: | Proceedings of the 43rd Annual Meeting of the Northeastern Weed Science Society. Vol. 43, 1989, p. 104. |
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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 ischaemum; Preemergence herbicides; Poa pratensis; Control; Dithiopyr
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| Abstract/Contents: | "A field trial was conducted in Delaware, OH to evaluate the performance of MON 15151 !EC for smooth crabgrass (Digitaria ischaeum Schreb.) control at three stages of development: Preemergence, early-postemergence, and mid-postemergence. The study was initiated on a Blount clay loam soil supporting a thatch free Kentucky bluegrass (Poa pratensis L. 'Kenblue') turf overseeded the previous fall with smooth crabgrass. The site was maintained at 3.8 cm height and irrigated frequently. Experimental design was a randomized complete block with three replications of 1.2 by 2.4 m treatment plots. Adjacent to each treatment plot a 0.6 by 2.4 m strip was left untreated to monitor weed growth. Chemical treatments were applied at 1627 L ha-1 as a tank mixture with 2.25% N (w/v) prepared from a 17-2-5 analysis fertilizer solution of urea, ammonium polyphosphate, and potassium chloride. Applications were made in a single pass using a CO2-propelled three-nozzle boom sprayer equipped with 8010LP TeeJet nozzles operating at 3.2 L min-1 flow rate nozzle-1. Percent crabgrass ground cover was visually estimated on August 15. Values were transformed and subjected to analysis of variance. MON 15151 applied at 0.28 kg ha-1 on April 1, 20 days preemergence, provided acceptable crabgrass control. Excellent control was achieved with MON-15151 at 0.42 kg ha-1 and with pendimathalin at 1.68 kg ha-1. Turf injury, evident as slight stand thinning, was observed with MON 15151 at 1.12 kg ha-1 while lower use rates were safe to the turf. Early postemergent applications until crabgrass had initiated tillering on June 30 resulted in unacceptable control from pendimethalin and rate of MON 15151 below 0.84 kg ha-1. All rates of MON 15151 initially discolored and stunted crabgrass growth, but weeds were outgrowing injury symptoms at the lower rates by 42 days after treatment. All rates of MON 15151 resulted in better crabgrass control compared to pendimethalin, while a tank mixture of 1.68 kg ha-1 pendimethalin plus 0.28 kg ha-1 fenoxaprop-ethyl provided control statistically equal (p=0.05) to MON 15151 at 0.56 kg ha-1." |
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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):
Hurto, K. A., and L. Schaber. 1989. Preemergence Activity of MON 15151 for Smooth Crabgrass Control in Kentucky Bluegrass Turf.. Proc. Annu. Meet. Northeast. Weed Sci. Soc. 43:p. 104. |
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| Web URL(s):
http://www.newss.org/proceedings/proceedings_1989_vol43.pdf#page=104
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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