MICRO AND SECONDARY NUTRIENT STATUS OF GEOREFERENCED SOILS OF BHADRAK, ANGUL, SONEPUR AND DHENKANAL DISTRICTS OF ODISHA

Abstract

Soil fertility maps of Dhenkanal, Sonpur, Bhadrak and Angul district of Odisha were prepared by using Global positioning system (GPS) and Geographical Information system (GIS) .soils of each blocks (total 29 blocks) of above districts were collected by Gramin 76 MAPCS x MAKE GPS instruments. Total number of soil samples were collected was 1024 and 124 plant samples. The soil and plant samples were processed and analysed in the laboratory using standard methods. The data were entered in attributed table and linked with GIS software to develop a rational data base. The analogue soil fertility map was georeferenced and digitized by using ArcGIS software. Thematic layers were developed for block boundaries to prepare base map. Superimposing polygons (spatial coverage) of block unit and base map, soil fertility maps for secondary and micronutrient were prepared. Base on fertility maps, the status of organic carbon, DTPA-extractable Fe, Mn, Zn, Cu and Hot water soluble Boron and secondary nutrient like Sulphur were assessed for suitability of crops. The overall conclusion was that these four districts of Odisha were deficient in Sulphur, Zinc and Boron in soil as well as plants whereas Fe, Mn and Cu in soil were found abundant. However, Cu in soil was an emerging issue now-adays and should take care of. It is advocated that the need for fertilization with Sulphur, Zinc and Boron fertilizer to enhance better crop growth and productivity.