| Abstrakt: |
Adsorption and mobility of the fungicide metalaxyl was studied in three soil types, viz., Hessaraghatta loamy sand (HLS), Bellary clay (BC), and Ooty clay (OC) soils, under laboratory conditions. The K values obtained from the Freundlich adsorption isotherms were 0.04, 10.65and 13.32 5g/g for HLS, BC and OC soils respectively. Mobility of metalaxyl in these soils was inversely related to K values (r = ?0.97).Although, metalaxyl persisted for over 60 days in all the soils, it did not move beyond a depth of 17.5 cm in any of the soils under unsaturated flow conditions. Mobility of metalaxyl was fastest in HLS andslowest in OC soils. [ABSTRACT FROM AUTHOR] |
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