Author(s):

D Jayanthi, N Jagathjothi and MG Vikshalakshie

Abstract: Geospatial technologies play a key role in generating timely and reliable information for planning and decision making at all the levels from macro to micro. With a view to develop a database for the development of action plans on micro level, a coastal village of Naluvedapathi village in Nagapattinam district, Tamil Nadu was selected and an attempt has been made to inventory the soil and irrigation water of the study area by using Geographic Information System (GIS).The study area is spanning from 79° 49' 30" to 79° 51' 30"East Longitudes and 10° 35' 00" to 10° 36' 30” North Latitudes. Thematic maps on soil characteristics viz., Soil pH, Electrical Conductivity (EC), soil available macro nutrient status (NPK), and micro nutrients (Zn, Cu, Fe and Mn) were prepared in Arc GIS environment. Map area analysis for each theme provided statistical information for each thematic map. The irrigation water was grouped under two salinity classes viz., high and very high salinity classes. The thematic maps prepared using GIS techniques facilitated in identifying potentialities and limitations of cultivated soil and also in developing management strategies for increasing crop production.

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