PMID- 26726779 OWN - NLM STAT- MEDLINE DCOM- 20160927 LR - 20181202 IS - 1520-5851 (Electronic) IS - 0013-936X (Linking) VI - 50 IP - 3 DP - 2016 Feb 2 TI - Biochar Amendment to the Soil Surface Reduces Fumigant Emissions and Enhances Soil Microorganism Recovery. PG - 1182-9 LID - 10.1021/acs.est.5b03958 [doi] AB - During soil fumigation, it is ideal to mitigate soil fumigant emissions, ensure pest control efficacy, and speed up the recovery of the soil microorganism population established postapplication. However, no current fumigant emission reduction strategy can meet all these requirements. In the present study, replicated soil columns were used to study the effect of biochar derived from rice husk (BR) and green waste (BG) applied to the soil surface on 1,3-dichloropropene (1,3-D) and chloropicrin (CP) emissions and soil gas distribution, and on microorganism population re-establishment. Relative to fumigated bare soil (no emission reduction strategy), high-density polyethylene (HDPE), and ammonium thiosulfate (ATS) treatments, BR gave dramatic emission reductions for both fumigants with no obvious emission peak, whereas BG was very effective only for 1,3-D. With BR application, the concentration of fumigant in the soil gas was higher than in the bare soil and ATS treatment. After the soil column experiment, mixing the BR with the fumigated soil resulted in higher soil respiration rates than were observed for HDPE and ATS treatments. Therefore, biochar amendment to the soil surface may be an effective strategy for fumigant emission reduction and the recovery of soil microorganism populations established postapplication. FAU - Shen, Guoqing AU - Shen G AD - School of Agriculture and Biology, Shanghai Jiao Tong University , Shanghai, 200240, P.R. China. FAU - Ashworth, Daniel J AU - Ashworth DJ AD - Department of Environmental Sciences, University of California , Riverside, California 92521, United States. AD - USDA-ARS , Salinity Laboratory, 450 West Big Springs Road, Riverside, California 92507, United States. FAU - Gan, Jay AU - Gan J AD - Department of Environmental Sciences, University of California , Riverside, California 92521, United States. FAU - Yates, Scott R AU - Yates SR AD - USDA-ARS , Salinity Laboratory, 450 West Big Springs Road, Riverside, California 92507, United States. LA - eng PT - Comparative Study PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20160115 PL - United States TA - Environ Sci Technol JT - Environmental science & technology JID - 0213155 RN - 0 (Allyl Compounds) RN - 0 (Hydrocarbons, Chlorinated) RN - 0 (Pesticides) RN - 0 (Soil) RN - 0 (Soil Pollutants) RN - 0 (Thiosulfates) RN - 0 (Waste Products) RN - 0 (biochar) RN - 16291-96-6 (Charcoal) RN - 9002-88-4 (Polyethylene) RN - 9H780918D0 (1,3-dichloro-1-propene) RN - BKH1729645 (ammonium thiosulfate) RN - I4JTX7Z7U2 (chloropicrin) SB - IM MH - Allyl Compounds/*analysis/chemistry MH - *Charcoal MH - Environment MH - Fumigation/*methods MH - Hydrocarbons, Chlorinated/analysis/chemistry MH - Oryza MH - Pesticides/analysis MH - Polyethylene/chemistry MH - *Soil MH - Soil Microbiology MH - Soil Pollutants/*analysis/chemistry MH - Thiosulfates/chemistry MH - Waste Products EDAT- 2016/01/05 06:00 MHDA- 2016/09/28 06:00 CRDT- 2016/01/05 06:00 PHST- 2016/01/05 06:00 [entrez] PHST- 2016/01/05 06:00 [pubmed] PHST- 2016/09/28 06:00 [medline] AID - 10.1021/acs.est.5b03958 [doi] PST - ppublish SO - Environ Sci Technol. 2016 Feb 2;50(3):1182-9. doi: 10.1021/acs.est.5b03958. Epub 2016 Jan 15.