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Metolachlor and Simazine in Surface Runoff Water from a Simulated Container Plant Nursery

Published online by Cambridge University Press:  12 June 2017

Gail E. Mahnken ,
Walt A. Skroch ,
Ross B. Leidy  and
Thomas J. Sheets
Gail E. Mahnken*
Affiliation:
Department of Horticultural Science, North Carolina Slate University, P.O. Box 7609, Raleigh, NC 27695-7609
Walt A. Skroch
Affiliation:
Department of Horticultural Science, North Carolina Slate University, P.O. Box 7609, Raleigh, NC 27695-7609
Ross B. Leidy
Affiliation:
Department of Toxicology, North Carolina State University, P.O. Box 8604, Raleigh, NC 27695-8604
Thomas J. Sheets
Affiliation:
Department of Toxicology, North Carolina State University, P.O. Box 8604, Raleigh, NC 27695-8604
*
Corresponding author's E-mail: gail_mahnken@ncsu.edu.
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Abstract

Field trials were conducted to evaluate the influence of three application methods and two types of ground cover on the transport of metolachlor and simazine from container-grown junipers. Application methods used were broadcast spray, broadcast granules, and individual container applications. Woven ground cloth and woven ground cloth plus gravel were used as ground covers. The site received daily irrigation, and surface runoff was sampled and analyzed 0, 1,2, 4, 8, 16, 32, and 56 d after herbicide application. Application method had the greatest effect on herbicide concentrations in runoff. Herbicide application to individual containers resulted in lower simazine and metolachlor concentrations in runoff. Herbicide concentrations took longer to drop below detection levels in surface runoff from broadcast applications.

Keywords

Metolachlor, 2-chloro-N-(2-ethyl-6-methylphenyl)-N-(2-methoxy-1-methylethyl)acetamidesimazine, 6-chloro-N,N'-diethyl-l,3,5-triazine-2,4-diamineAndorra juniper, Juniperus horizontalis ‘Plumosa compacta.’Pesticide residueirrigationcontainer productionAD, application dateAM, application methodDAA, days after herbicide applicationdf, degrees of freedomrep, replication
Type
Research
Information
Weed Technology , Volume 13 , Issue 4 , December 1999 , pp. 799 - 806
Copyright
Copyright © 1999 by the Weed Science Society of America 

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Footnotes

Current address of senior author: Department of Toxicology, North Carolina State University, P.O. Box 8604, Raleigh, NC 27695-8604.

References

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