Application of Geophysical Methods in Agriculture

Geophysics is the application of physical quantity measurement techniques to provide information on conditions or features beneath the Earthʹs surface. The three geophysical methods predominantly used for agricultural purposes are resistivity, electromagnetic induction and ground-penetrating radar. Depth sections and contour maps are two of the most common geophysical data analysis end products .Agricultural application of geophysical methods to investigate the shallow subsurface (within a typical depth range of0 to2 m).few application of geophysical method in agriculture are: Soil drainage class mapping, determining clay-pan depth, Estimation of herbicide partition coefficients in soil, Mapping of flood deposited sand depths on farmland, soil nutrient monitoring from manure applications, Quality/efficiency improvement soil surveys, Measurement of micro variability in soil profile horizon depths, Bedrock depth determination in glaciated landscape with thin soil cover, Plant root biomass surveying identification of subsurface flow pathways, Farm field and golf course drainage pipe detection, Soil salinity assessment Delineation of spatial changes in soil properties ,Soil water content determination