PMID- 18605567
OWN - NLM
STAT- MEDLINE
DCOM- 20081010
LR  - 20190715
IS  - 0013-936X (Print)
IS  - 0013-936X (Linking)
VI  - 42
IP  - 12
DP  - 2008 Jun 15
TI  - Soil chamber method for determination of drip-applied fumigant behavior in 
      bed-furrow agriculture: application to chloropicrin.
PG  - 4434-9
AB  - To overcome the environmental impacts of soil fumigant use, emission reduction 
      strategies such as tarping can be adopted. There is a need to experimentally 
      quantify the effectiveness of such strategies, preferably in a low-cost manner. 
      We report the design and initial testing of a laboratory soil chamber approach 
      for quantifying the soil distribution and emissions of fumigants from bed-furrow 
      agricultural systems. As far as possible, field conditions (e.g., soil type, bulk 
      density, moisture content temperature) were maintained in the experiments. In 
      studying the drip application of chloropicrin using this system, very good data 
      reproducibility was observed between replicates, allowing confidence in the 
      experimental design. For control chambers, high emissions, around 60% (of the 
      total added), were observed due to the near-surface (5 cm depth) application. 
      When the soil beds were tarped using high-density polyethylene (HDPE) or 
      semi-impermeable film (SIF), emissions were reduced to around 40% due to an 
      accumulation of chloropicrin below the tarp. The approach offers an inexpensive 
      potential alternative to studying fumigant emissions from bed-furrow systems in 
      the field and suggests that less permeable tarps would be required to drastically 
      reduce chloropicrin emissions.
FAU - Ashworth, Daniel J
AU  - Ashworth DJ
AD  - USDA-ARS United States Salinity Laboratory, 450 West Big Springs Road, Riverside, 
      California 92507, USA. Daniel.Ashworth@ars.usda.gov
FAU - Ernst, Fred F
AU  - Ernst FF
FAU - Yates, Scott R
AU  - Yates SR
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
PL  - United States
TA  - Environ Sci Technol
JT  - Environmental science & technology
JID - 0213155
RN  - 0 (Hydrocarbons, Chlorinated)
RN  - I4JTX7Z7U2 (chloropicrin)
SB  - IM
MH  - *Agriculture
MH  - Hydrocarbons, Chlorinated/*analysis
EDAT- 2008/07/09 09:00
MHDA- 2008/10/11 09:00
CRDT- 2008/07/09 09:00
PHST- 2008/07/09 09:00 [pubmed]
PHST- 2008/10/11 09:00 [medline]
PHST- 2008/07/09 09:00 [entrez]
AID - 10.1021/es800148p [doi]
PST - ppublish
SO  - Environ Sci Technol. 2008 Jun 15;42(12):4434-9. doi: 10.1021/es800148p.