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| Web URL(s): | http://www.newss.org/proceedings/proceedings_1996_vol50.pdf#page=115
Last checked: 07/24/2013
Requires: PDF Reader
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): | Watschke, T. L.;
Borger, J. A.;
Shearer, C. R. |
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| Author Affiliation: | Professor and Research Assistant, Department of Agronomy, Penn State University |
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| Title: | Preemergence control of smooth crabgrass in 1995 |
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| Meeting Info.: | Williamsburg, VA; January 2-5, 1996 |
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| Source: | Proceedings of the 50th Annual Meeting of the Northeastern Weed Science Society. Vol. 50, 1996, p. 115. |
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| Publishing Information: | College Park, MD: Northeastern Weed Science Society |
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| # of Pages: | 1 |
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| Keywords: | TIC Keywords: Application timing; Comparisons; Experimental products; Herbicide efficacy; Herbicide evaluation; Lolium perenne; Preemergence herbicides
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| Abstract/Contents: | "Forty preemergence herbicide treatments were applied to a mature stand of perennial ryegrass (Lolium perenne L.) at the Landscape Management Research Center at The Pennsylvania State University. The objectives of the study were; 1) to compare two application timings for selected treatments (March 16, 1995 and April 21, 1995) and 2) to compare efficacy of experimental versus commercial materials. As some treatments were applied using fertilizer as a carrier, all treatments regardless of carrier were maintained at the same nitrogen fertility level. Most March treatments also received a sequential application with the follow-up treatment applied eight weeks after the initial application. Sprayed applications were made using a hand held CO₂ boom sprayer with 6504 nozzles at 30 psi calibrated to deliver 80 gpa. Granular formulations were applied using a shaker jar. Irrigation was applied after application (approximately 0.25 inch) and at various times during the course of the study to maintain the turf free dormancy. Crabgrass control was rated on August 19, 1995. No phytotoxicity was observed during the course of study. Beneifin plus trifluralin 0n a 27-3-8 fertilizer at a rate of 1.5 lbs ai/A applied as aa sequential treatment, pendimethalin on a 28-3-4 at a rate of 1.5 lbs ai/A applied as a sequentially, pendimethalin on a 38-3-4 applied at a rate of 1.5 lbs ai/A but with a sequential treatment with the 60 WDG formulation, dithiopyr on a 24-4-14 at a rate of 0.25 lbs ai/A, prodiamine 65 WDG at 0.32, 0.48, 0.65 lbs ai/A, prodiamine on a 19-4-6 at a rate of 0.75 lbs ai/A, pendimethalin 60 WDG at1.5 lbs ai/A dithiopyr 1 EC at 0.5 lbs ai/A AD444, AD445, and AD446 at 0.125, 0.25, 0.38, and 0.5 lbs ai/A respectively, all provided at least 90% control of smooth crabgrass which was considered commercially acceptable. Dithiopyr on a 24-4-14 at a rate of 0.25 applied on March 16 provieded 96% control, while ethofumesate applied at 0.75 and 1.5 lbs ai/A, oxaidation applied at 2.0 lbs ai/A, prodiamine on a 19-4-6 at a rate of 0.5 lbs ai/A, and some experimental compounds did not provide acceptable control when the application was made on April 21. Since dithiopyr provides some level of postmergence activity it appears that some germination may have occurred prior to April 21, 1995." |
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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):
Watschke, T. L., J. A. Borger, and C. R. Shearer. 1996. Preemergence control of smooth crabgrass in 1995. Proc. Annu. Meet. Northeast. Weed Sci. Soc. 50:p. 115. |
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| Web URL(s):
http://www.newss.org/proceedings/proceedings_1996_vol50.pdf#page=115
Last checked: 07/24/2013
Requires: PDF Reader
Notes: Item is within a single large file |
| 
MSU catalog number: SB 610 .N62 v. 50 |
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