Generation and Dissipation of Methyl Isothiocyanate in Soils Following Metam Sodium Fumigation : Impact on Verticillium Control and Potato Yield

The fate of methyl isothiocyanate (MITC) was studied in agricultural soils following metam sodium (MS) application in a controlled system and under field conditions as it was related to disease control. Soil samples were collected from 34 field sites in Israel with no history of MS application. The...

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Veröffentlicht in:Plant disease. - 1997. - 91(2007), 5 vom: 01. Mai, Seite 497-503
1. Verfasser: Triky-Dotan, Shachaf (VerfasserIn)
Weitere Verfasser: Austerweil, Miriam, Steiner, Bracha, Peretz-Alon, Yitzhak, Katan, Jaacov, Gamliel, Abraham
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2007
Zugriff auf das übergeordnete Werk:Plant disease
Schlagworte:Journal Article gas liquid chromatography soil disinfestation solid-phase microextraction
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520 |a The fate of methyl isothiocyanate (MITC) was studied in agricultural soils following metam sodium (MS) application in a controlled system and under field conditions as it was related to disease control. Soil samples were collected from 34 field sites in Israel with no history of MS application. The generation and dissipation curves of MITC in these soils, under controlled conditions, varied significantly among the soils, as reflected by the concentration by time (C × T) product. This value was significantly related with the mortality level of Fusarium oxysporum f. sp. radicis-lycopersici as a test organism and sand content of the soils. Seven field experiments were conducted in potato fields from 2001 to 2004. The MS treatments significantly reduced Verticillium wilt incidence and severity in five and four experiments, respectively, out of seven. Combining MS with formalin was more effective for controlling disease than MS alone in most cases. A significant relationship was found between mortality of F. oxysporum f. sp. radicis-lycopersici in soil samples to which MS was applied under controlled conditions and the incidence of Verticillium wilt disease in the field, and between CMITC × T products and the incidence of Verticillium wilt disease in the field. These tests can be used for preplant assessment of potential MS efficacy 
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650 4 |a solid-phase microextraction 
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700 1 |a Steiner, Bracha  |e verfasserin  |4 aut 
700 1 |a Peretz-Alon, Yitzhak  |e verfasserin  |4 aut 
700 1 |a Katan, Jaacov  |e verfasserin  |4 aut 
700 1 |a Gamliel, Abraham  |e verfasserin  |4 aut 
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