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| Web URL(s): | http://www.newss.org/proceedings/proceedings_2008.pdf#page=21
Last checked: 07/15/2013
Requires: PDF Reader
Notes: Item is within a single large file |
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| Publication Type:
| Report |
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| Author(s): | Scott, B. A.;
VanGessel, M. J.;
Johnson, Q. R. |
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| Author Affiliation: | University of Delaware, Georgetown |
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| Title: | Weed control under plastic with fall dazomet soil fumigant application |
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| Section: | Research posters
Other records with the "Research posters" Section
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| Meeting Info.: | Philadelphia, Pennsylvania: January 7-10, 2008 |
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| Source: | Proceedings of the Sixty-Second Annual Meeting of the Northeastern Weed Science Society. Vol. 62, 2008, p. 3. |
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| Publishing Information: | Baltimore, Maryland: Northeastern Weed Science Society |
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| # of Pages: | 1 |
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| Keywords: | TIC Keywords: Application timing; Dazomet; Fumigants; Plastic sheeting; Weed control
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| Abstract/Contents: | "Dazomet is a soil fumigant used to control weeds, fungi, and nematodes. It has been used in turf, ornamentals, field nurseries including Christmas trees, and in strawberry and tomato production. Expanding the use of dazomet in vegetable production settings with the use of plasticulture needs to be investigated. In 2006, a field trial was initiated in Georgetown, DE. The objective was to determine the efficacy of fall dazomet application for weed control under plastic laid in the fall versus the standard practice of herbicide application and plastic mulch laid in the spring. Trial area was chisel plowed, disked and field cultivated in October 2006. dazomet (400 lbs/A) was applied with a drop spreader and incorporated. Dazomet treatments differed by incorporation methods. Dazomet was incorporated immediately with a roto-tiller (to a 6-inch depth) prior to bedding and laying plastic; no roto-till, but incorporated within 30 minutes by bedding procedure and laying plastic; or roto-tilled then water-sealed over a five day period with overhead irrigation. Water sealed treatments were bedded and plastic mulch laid in the spring. Comparison treatments included Sandea (0.67 oz wt/A) applied in the spring one day prior to bedding and laying plastic and no weed control under plastic mulch. All treatments involving laying plastic mulch in the spring were roto-tilled 5 inches deep to facilitate bedding. All plots had drip irrigation laid under the plastic mulch. 'Millionaire' seedless watermelons and pollinators were transplanted on May 10, 2007. Plots were 40 foot long, top of beds were 30 inches wide and each was on 8 foot centers. Weed control in row middles was treated the same for all plots. This study was arranged as a randomized complete block with five replications. At 7 weeks after transplanting (WATRP), dazomet with plastic mulch laid in the fall provided the most consistent weed control. Weed control evaluation showed poor large crabgrass (Digitaria sanguinalis) and common purslane (Portulaca oleracea) control in the spring plastic treatments. Common lambsquarter (Chenopodium album), pigweed species (Amaranthus spp.), and yellow nutsedge (Cyperus esculentus) control was reduced in the dazomet spring plastic treatment as compared to the two fall dazomet treatments and Sandea under plastic. At the end of each plot, one square foot sections of plastic were cut and removed at 3 WATRP to expose soil and allow for weed growth. At 9 WATRP, weed counts taken from the 1 ft2 sections showed dazomet treatments with plastic laid in the fall provided the most consistent control. Watermelon yield in the dazomet, roto-tilled, with plastic mulch laid in the fall was significantly greater (>60%) than with Sandea under plastic, dazomet no roto-till with plastic in the fall, and the untreated check. Yield in the dazomet, plastic in the spring did not differ from any other treatment. Fall dazomet followed by roto-tilling and plastic provided the most consistent results across all the parameters. For the initial year, roto-tilling, plastic mulch in the fall improved the effectiveness of dazomet for weed control, watermelon health, and yield." |
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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):
Scott, B. A., M. J. VanGessel, and Q. R. Johnson. 2008. Weed control under plastic with fall dazomet soil fumigant application. Proc. Annu. Meet. Northeast. Weed Sci. Soc. 62:p. 3. |
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| Web URL(s):
http://www.newss.org/proceedings/proceedings_2008.pdf#page=21
Last checked: 07/15/2013
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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