Soil Nutrient Status And Spatial Variability Analysis Using Rs & Gis:a Case Study Of Ramakuppam Mandal, Andhra Pradesh

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P.V.R.M. REDDY*, K.V. NAGA MADHURI AND T.N.V.K.V. PRASAD

Institute of Frontier Technologies, RARS, ANGRAU, Tirupati-517 502, Chittoor Dt., A.P.

ABSTRACT

Soil nutrients denotes the soil fertility status and play a vital role in crop production for sustainability. Based on geo-statistics and GIS, the spatial variation of pH, EC, available nitrogen, phosphorus, potassium and DTPA extractable micronutri-ents in the soils of Ramakuppam mandal of Andhra Pradesh was studied. The spatial variation of available nitrogen, phosphorus, potassium and micro nutrients were greatly affected by soil structural factors. The spatial distribution of soil nutrients in Ramakuppam mandal was intuitively characterized by Kriging interpolation. It is very important to understand the spatial distri-bution of soil nutrients, which will provide guidance for adjusting agricultural management measures in general and fertilizer application in particular.

KEYWORDS:

Spatial Analysis, Geo-Statistics, Soil Nutrients, Kriging, Soil Nutrient Maps