Abstract
Kerala is one of the important states contributing to the production of plantation crops and spices in the country. Soil and Land evaluation in various land utilization types has been carried out to assess the land suitability for tea, cardamom and rubber in Wayanad district of Kerala. Different soil physico-chemical parameters like, pH, electrical conductivity, organic carbon and physical attributes database of soil mapping units developed in inventorying of soil resources at 1:50K scale using LISS-III satellite data on soil series and its association used to evaluate soil site suitability for tea, cardamom and rubber. The results indicated that for tea around 55.79% area is suitable for cultivation of which 14.62 %, 25.51 % and 15.66 % found highly suitable (S1), moderately suitable (S2) and marginally suitable (S3), respectively. About 26.92 % and 12.10 % found moderately suitable (S2) and marginally suitable (S3) for cardamom and about 32.48 % area marginally suitable (S3) for rubber. The area unsuitable for cultivation (N) of tea, cardamom and rubber were found to be 11.69 %, 28.46 % and 34.99 %, respectively, due to constraints like relief, topography, soil physico-chemical attributes such as base saturation, pH and soil moisture regime etc. The study proposed an integrated methodology for mapping and assessing suitability of land using remote sensing and GIS techniques.
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