Mapping spatial variability in research stations is imperative to understand the existing potentialities and limitations, to assess the land capability for specific land use, for estimating the native nutrient supply power of the soil and for the correlation of experimental data generated in various research trials so as to draw valid conclusions. A study was undertaken in Coconut Research Station, Tamil Nadu Agricultural University, Aliyar Nagar to characterize the spatial variability of DTPA extractable micronutrients viz., iron (Fe), manganese (Mn), zinc (Zn), copper (Cu)) and hot water soluble boron (B). Two hundred and fifty eight geo - referenced soil samples were collected from the surface (0-15 cm) and subsurface (15- 30 cm) layers of A, B and C blocks of the farm. The farm is predominantly sandy textured belonging to the taxonomic class Typic / Fluventic Ustropept. Micronutrients and hot water soluble boron were estimated adopting the standard procedures. GIS aided fertility maps were prepared employing Arc-GIS software and the extent of deficiency and sufficiency were determined. Thus spatial variability mapping employing GIS techniques is an ideal tool for the researchers and policy planners in rapid assessment of nutrient deficiencies in soil.