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The aim of the study was to analyze and map the soil micronutrient status in the command area of Hanjihalli village tank through remote sensing and geographical information system (GIS).Sixty-three composite soil samples from surface (0-15 cm) were collected across the command area of Hanjihalli village tank covering an agricultural area of 63 ha at 100 m grid intervals.The GPS data at each sample location was collected.Inverse distance weighting (IDW) technique and kriging were adopted to generate thematic maps of the soil properties.The process of digitization and generation of maps was carried out with Arc GIS 10 software.Experimental results revealed that available iron ranged between 3.79 to 56.70 mg kg -1 with a mean value of 25.33 mg kg -1 and coefficient of variation 51.62 per cent.Available copper ranged between 0.08 to 5.58 mg kg -1 with a mean value of 1.20 mg kg -1 and highest coefficient of variation of 107.91 per cent.Available zinc ranged between 0.02 to 0.94 mg kg -1 with a mean value of 0.37 mg kg -1 and coefficient of variation 69.45 per cent.Available manganese ranged between 0.14 to 34.10 mg kg -1 with a mean value of 7.39 mg kg -1 and coefficient of variation 107.28 per cent.This technique was found to be effective in identifying the micronutrients availability throughout the study region, thereby helping policy makers to frame fertilizer distribution and application policy for future.
Kumar et al. (Thu,) studied this question.