PMID- 20232287
OWN - NLM
STAT- MEDLINE
DCOM- 20110124
LR  - 20171116
IS  - 1526-4998 (Electronic)
IS  - 1526-498X (Linking)
VI  - 66
IP  - 6
DP  - 2010 Jun
TI  - Surface water seal application to minimize volatilization loss of methyl 
      isothiocyanate from soil columns.
PG  - 686-92
LID - 10.1002/ps.1930 [doi]
AB  - BACKGROUND: Metam-sodium (MS, sodium methyldithiocarbamate) has been identified 
      as a promising alternative chemical to replace methyl bromide (MeBr) in soil 
      preplant fumigation. One degradation product of MS in soil is the volatile gas 
      methyl isothiocyanate (MITC) which controls soilborne pests. Inconsistent results 
      associated with MS usage indicate that there is a need to determine cultural 
      practices that increase pest control efficacy. Sealing the soil surface with 
      water after MS application may be a sound method to reduce volatilization loss of 
      MITC from soils and increase the contact time necessary for MITC to control 
      pests. The objective of this research was to develop a preliminary soil surface 
      water application amount that would potentially inhibit the off-gassing rate of 
      MITC. RESULTS: Off-gassing rate was consistently reduced with increasing water 
      seal application. The application of a 2.5-3.8 cm water seal provided 
      significantly lower (71-74% reduction in MITC volatilization) total fumigant loss 
      compared with no water seal. The most favorable reduction in MITC off-gassing was 
      observed in the 2.5 cm water seal. CONCLUSION: This suggests that volatilization 
      of MITC-generating compounds can be highly suppressed using adequate surface 
      irrigation following chemical application in this soil type (sandy clay loam), 
      based on preliminary bench-scale soil column studies. .
FAU - Simpson, Catherine R
AU  - Simpson CR
AD  - Department of Agronomy and Resource Sciences, Texas A&M University-Kingsville 
      Citrus Center, Kingsville, TX 78363, USA.
FAU - Nelson, Shad D
AU  - Nelson SD
FAU - Stratmann, Jerry E
AU  - Stratmann JE
FAU - Ajwa, Husein A
AU  - Ajwa HA
LA  - eng
PT  - Journal Article
PT  - Research Support, U.S. Gov't, Non-P.H.S.
PL  - England
TA  - Pest Manag Sci
JT  - Pest management science
JID - 100898744
RN  - 0 (Herbicides)
RN  - 0 (Isothiocyanates)
RN  - 0 (Soil)
RN  - 059QF0KO0R (Water)
RN  - RWE2M5YDW1 (methyl isothiocyanate)
SB  - IM
MH  - Air
MH  - Fumigation
MH  - Herbicides/*analysis/*chemistry
MH  - Isothiocyanates/*analysis/*chemistry
MH  - Laboratories
MH  - Soil/analysis/*chemistry
MH  - Surface Properties
MH  - Temperature
MH  - Volatilization
MH  - Water/*chemistry
EDAT- 2010/03/17 06:00
MHDA- 2011/01/25 06:00
CRDT- 2010/03/17 06:00
PHST- 2010/03/17 06:00 [entrez]
PHST- 2010/03/17 06:00 [pubmed]
PHST- 2011/01/25 06:00 [medline]
AID - 10.1002/ps.1930 [doi]
PST - ppublish
SO  - Pest Manag Sci. 2010 Jun;66(6):686-92. doi: 10.1002/ps.1930.