Title: Fumigant distribution in forest nursery soil under water seal and plastic film after application of dazomet, metam-sodium and chloropicrin
Author: Wang, Dong; Fraedrich, Stephen W.; Juzwik, Jennifer; Spokas, Kurt; Zhang, Yi; Koskinen, William C.;
Source: Pest management science. 62: 263-273
Publication Series: Miscellaneous Publication
Description: Adequate concentration, exposure time and distribution uniformity of activated fumigant gases are prerequisites for successful soil fumigation. Field experiments were conducted to evaluate gas phase distributions of methyl isothiocyanate (MITC) and chloropicrin (CP) in two forest-tree nurseries. Concentrations of MITC and CP in soil air were measured from replicated microplots that received dazomet, metam-sodium and CP. Half of the plots were covered with high-density polyethylene tarp immediately after fumigation; the other half were not covered but received daily sprinkler irrigation for 1 week to create and maintain a water seal. The magnitude of MITC concentrations was similar between nurseries for metam-sodium in both tarp and water seal treatments and for dazomet in the tarp treatment. Consistently greater MITC and CP concentrations were found in the upper 30 crn of soil in the tarped plots compared with the water-sealed plots. Despite potential environmental and economic benefits with the water seal method, tarp covers were more reliable for achieving and maintaining higher MITC and CP concentrations and less prone to variations due to irrigationl rain, soil bulk density and other environmental conditions.
Keywords: methyl isothiocyanate, chloropicrin, dazomet, metam-sodium, fumigation, soil gas concentration
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
- You may send email to firstname.lastname@example.org to request a hard copy of this publication. (Please specify exactly
which publication you are requesting and your mailing address.)
XML: View XML
Wang, Dong; Fraedrich, Stephen W.; Juzwik, Jennifer; Spokas, Kurt; Zhang, Yi; Koskinen, William C. 2006. Fumigant distribution in forest nursery soil under water seal and plastic film after application of dazomet, metam-sodium and chloropicrin. Pest management science. 62: 263-273
Get the latest version of the Adobe Acrobat reader or Acrobat Reader for Windows with Search and Accessibility