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Responses of Potato (Solanum tuberosum), Tomato (Lycopersicon esculentum), and Several Weeds to ASC-67040 Herbicide

Published online by Cambridge University Press:  20 January 2017

Henry P. Wilson ,
David W. Monks ,
Thomas E. Hines  and
Robert J. Mills
Henry P. Wilson*
Affiliation:
Eastern Shore Agricultural Research and Extension Center, Virginia Polytechnic Institute and State University, Painter, VA 23420-2827
David W. Monks
Affiliation:
Horticulture Science Department, North Carolina State University, Raleigh, NC 27695-7609
Thomas E. Hines
Affiliation:
Eastern Shore Agricultural Research and Extension Center, Virginia Polytechnic Institute and State University, Painter, VA 23420-2827
Robert J. Mills
Affiliation:
Horticulture Science Department, North Carolina State University, Raleigh, NC 27695-7609
*
Corresponding author's E-mail: hwilson@vt.edu.
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Abstract

The experimental sulfonylurea herbicide ASC-67040 was evaluated preemergence (PRE) and postemergence (POST) at 25 to 100 g ai/ha and PRE at 50 g/ha followed by ASC-67040 POST at 50 g/ha for broadleaf weed control in potato and tomato. In Virginia, ASC-67040 POST at 50 and 100 g/ha gave 70 to 98% control of common lambsquarters, common ragweed, and jimsonweed with slight (0 to 6%) ‘Superior’ potato and moderate (0 to 23%) ‘Agriset’ tomato injury. This crop injury was present primarily as chlorosis in terminal growth and disappeared by 3 wk after treatment (WAT). Potato tuber and tomato fruit yields were high in ASC-67040-treated plots. In North Carolina, ASC-67040 PRE and POST at 50 and 100 g/ha controlled 10 species of annual broadleaf weeds and grasses, and at 25 g/ha ASC-67040 gave greater than 90% control of most species. ASC-67040 injured ‘Fontenot’ potato more than Superior and caused 10 to 13% injury to ‘Mountain Spring’ tomato but did not injure ‘Mountain Pride’ tomato. Mountain Spring tomato recovered rapidly and produced high yields. In the greenhouse, yellow nutsedge control by ASC-67040 POST at 25 to 100 g/ha was 59 to 86% 3 WAT and yellow nutsedge height, dry weight, and regrowth dry weight were reduced by all rates. Lower rates of ASC-67040 might control weeds and cause less injury to potato and tomato.

Keywords

ASC-67040 (proposed name fluazasulfuron), 1-(4,6-dimethoxypyrimidin-2-yl)-3-[3-trifluoromethyl-pyridin-2-yl)sulfonyl]ureametolachlormetribuzintrifluralincommon lambsquarters, Chenopodium album L. #3 CHEALcommon ragweed, Ambrosia artemisiifolia L. # AMBELjimsonweed, Datura stramonium L. # DATSTyellow nutsedge, Cyperus esulentus L. # CYPESpotato, Solanum tuberosum L. ‘Fontenot’, ‘Superior’tomato, Lycopersicum esculentus L. ‘Agriset’, ‘Mountain Pride’, ‘Mountain Spring’MetolachlormetribuzintrifluralinAmbrosia artemisiifoliaCyperus esculentusDatura stramoniumAMBELCHEALCYPESDATSTALS, acetolactate synthase (EC 4.1.3.18)DAP, days after plantingDATP, days after transplantingDAT, days after treatmentfb, followed byPOST, postemergencePPI, preplant incorporatedPRE, preemergence in potato and pretransplant surface applied in tomatoWAT, weeks after treatment
Type
Research
Information
Weed Technology , Volume 15 , Issue 2 , June 2001 , pp. 271 - 276
Copyright
Copyright © Weed Science Society of America 

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References

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