SULPHUR DYNAMICS UNDER DIFFERENT LAND USE SYSTEMS OF A MICRO-WATERSHED IN NORTHERN TRANSITION ZONE OF KARNATAKASabyasachi Majumdar and P. L. PatilAbstract An investigation was undertaken during 2013-14 in northern transition zone of Karnataka to study the forms and distribution of sulphur of Singhanhalli-Bogur micro-watershed. Three land use systems [agriculture (paddy land and non paddy land), forest and horticulture] were selected for the study. From each land use system, fifteen surface (0-20 cm) soil samples were collected randomly. The occurrence of forms of sulphur under different land use system followed the order: Total-S > Organic-S > Heat soluble S > Available sulphur > Water soluble sulphur. Total sulphur and organic sulphur maintained a significant positive correlation with organic carbon and clay content. Heat soluble S showed significant positive correlation with almost all the properties which revealed that heat soluble-S had direct bearing with these properties.
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