Author(s):

Sushmitha CV, Gurumurthy KT and Rajashekhar L

Abstract: A study was undertaken to map the DTPA extractable micronutrients status of Dasarahalli-I micro-watershed in Chikmagalur taluk using GIS technique. Sixty surface soil samples (0-15cm) of Dasarahalli-I micro-watershed were collected and assessed for the soil chemical properties and DTPA extractable micronutrients status. The soils under the study were strongly acidic to slightly alkaline in soil reaction with non- saline in nature and soil organic carbon status was low to medium. The DTPA extractable micronutrients like iron, manganese and copper contents were found to be sufficient in the entire micro watershed area where as zinc content was found to be sufficient in 66 ha (6.61 %) and deficient in 3 ha (0.38 %) and boron content was found to be deficient in the entire micro watershed area. The study highlights the importance of mapping the soil parameters which gives the spatial extent rather than the means which have limited applicability for soil management.

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