tailieunhanh - Spatial variability mapping of soil nutrient through geo-informatics technology

The Knowledge of spatial-variability is critical for site specific nutrient management in soil fertility. Soil sample (149) were gotten from surface from 10 selected sites for preparing precise digital maps using point, line and polygon tools of the GIS (TNTmips 2010) software. Soil spatial variability typically defines variation in soil properties in surface soil such as fertility, pH, EC, soil organic carbon (OC), free CaCO3, mineralizable N,P2O5, K2O and S. In this study 149 soil samples were collected from the Rajendra Agricultural University, Pusa Farm, and based on the score of nutrients, corresponding thematic maps were drawn up. The thematic soil maps clearly revealed the distribution of different physico-chemical characteristics and available nutrients status which were assigned appropriate classes - low, medium and high or sufficient /deficient. |

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