About Us | Help Videos | Contact Us | Subscriptions
 

Abstract

 

This article in JEQ

  1. Vol. 27 No. 2, p. 408-414
     
    Received: Apr 29, 1997


    * Corresponding author(s): jgan@ussl.ars.usda.gov
 View
 Download
 Alerts
 Permissions
Request Permissions
 Share

doi:10.2134/jeq1998.00472425002700020023x

Acceleration of 1,3-Dichloropropene Degradation by Organic Amendments and Potential Application for Emissions Reduction

  1. J. Gan *,
  2. S. R. Yates,
  3. D. Crowley and
  4. J. O. Becker
  1. Dep. Soil and Environ. Sciences, Univ. of California, Riverside, CA 92521;
    Dep. Nematology, Univ. of California, Riverside, CA 92521.

Abstract

Abstract

Emissions of the fumigant 1,3-dichloropropene (1,3-D) can result in degradation of air quality in certain areas. The high emission potential of 1,3-D is caused by its rapid diffusion and comparatively slow degradation in soil. One approach to reduce the emission is to enhance the surface soil's capacity to degrade 1,3-D. We investigated the capability of two organic amendments, a composted manure (CM) and a biosolid-manure mix (BM), to accelerate 1,3-D degradation in soil. Degradation of 1,3-D was significantly enhanced in amended soils compared to the unamended soil, and the degree of acceleration varied with the type as well as the rate of amendment. Compost manure was more effective in stimulating 1,3-D degradation than the less decomposed BM; even at an amendmen/soil ratio as low as 1:40 (w/w), degradation in the CM-amended soil was two times faster than that in the unamended soil. The acceleration in CM-amended soils was a combined result of enhanced chemical and microbial degradation, since sterilization only partially reduced the enhanced degradation. The reduction of 1,3-D emissions by surface application of organic amendments was illustrated in a column experiment: 1,3-D emission loss after injection at 30 cm was 30% from an unamended Arlington sandy loam (a coarse-loamy, mixed, thermic Haplic Durixeralf), but decreased to only 16% in the column containing 5% CM in its top 5-cm layer.

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

Copyright © .