Assessment of Soil Fertility through Geospatial Techniques in Kurnool Division of Andhra Pradesh

Author: S. Balaji Nayak*, D. Balaguravaiah, K.V. Ramana, T. Giridharakrishna, P. Munirathnam and B. Ravindra Reddy

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Abstract

Soil analysis of the study area (Kurnool, Gudur, Kallur, C. Belagal and Kodumur mandals) of Kurnool Agricultural Revenue Division, Kurnool Dt of AP state during 2016-17 revealed nature of soils as neutral to strongly alkaline in reaction with low electrical conductivity. Soil OC and available N were low to medium, with respective to available phosphorus the values ranged from low to high and the available potassium from medium to high. The available Ca, Mg, S and Mn were sufficient whereas Zn, Fe and Cu are deficient to sufficient in range. Spatial variability of soil properties were premeditated and the generation of maps was done making use of geo-statistics. Spacial variability was observed in all the nutrients except calcium, magnesium and manganese. The spatial variability was high with phosphorus followed by sulphur, zinc, iron, nitrogen, potassium and copper.

Keywords

Soil Fertility Mapping, Geospatial Techniques, Spatial Variability.

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