About Us | Help Videos | Contact Us | Subscriptions
 

Members of ASA, CSSA, and SSSA: Due to system upgrades, your subscriptions in the digital library will be unavailable from May 15th to May 22nd. We apologize for any inconvenience this may cause, and thank you for your patience. If you have any questions, please call our membership department at 608-273-8080.

 

Institutional Subscribers: Institutional subscription access will not be interrupted for existing subscribers who have access via IP authentication, though new subscriptions or changes will not be available during the upgrade period. For questions, please email us at: queries@dl.sciencesocieties.org or call Danielle Lynch: 608-268-4976.

Abstract

 

This article in JEQ

  1. Vol. 28 No. 2, p. 564-575
     
    Received: Feb 3, 1998


    * Corresponding author(s): ZebarthB@em.agr.ca
 View
 Download
 Alerts
 Permissions
Request Permissions
 Share

doi:10.2134/jeq1999.00472425002800020022x

Leaching Behavior of Chlorinated Hydrocarbon Soil Fumigants in Repacked Soil Columns

  1. B. J. Zebarth * and
  2. S. Y. Szeto
  1. Potato Research Centre, Agriculture and Agri-Food Canada, P.O. Box 20280, Fredericton, NB, Canada E3B 4Z7.

Abstract

Abstract

The leaching behavior of Telone (active ingredients 1,3-dichloropropene and 1,2-dichloropropane) and Telone II (active ingredient 1,3-dichloropropene) and the trace chlorinated hydrocarbon impurities in the fumigant formulations including 1,2,2-trichloropropane; 1,2,3-trichloropropane; 2,3-dichloropropene; and 1,3-dichloropropane, were studied using 75 cm long repacked soil columns in two experiments. In Exp. 1, soil columns received Telone, Telone II, or no soil fumigant. In Exp. 2, Telone II was applied to soil columns containing four soils: surface or subsurface samples from coarse- and medium-textured soils. The concentrations of the chlorinated hydrocarbon compounds were measured in the soil and leachate. The concentrations of 3-chloroallyl alcohol and 3-chloroacrylic acid, breakdown products of 1,3-dichloropropene, were also measured in leachate after Telone application. 1,3-Dichloropropene, 3-chloroallyl alcohol, and 3-chloroacrylic acid degraded rapidly, and exhibited minimal adsorption to the soil. The remaining compounds were persistent in soil. Recovery of the applied compounds was lower in the surface than in the subsurface soils, particularly in the medium-textured soil, likely due to greater biological activity in the surface soils. The risk of loss of these compounds from the root zone was minimal for 1,3-dichloropropene, and lower with use of Telone II than of Telone. 1,2,2-Trichloropropane was identified as the compound in Telone II most likely to result in groundwater contamination. Significant recovery of the chlorinated hydrocarbon compounds from the control treatment, using soil that had received prior fumigant applications, suggests that these compounds may be released from soil well after the time of fumigant application.

Contribution no. 1068.

  Please view the pdf by using the Full Text (PDF) link under 'View' to the left.

Copyright © .