Abstract
The electrical resistivity of soil is significantly influenced by shape of the particle of soil, presence of moisture in soil, chemical properties of soil and presence of organic materials in soil. Chemical properties of soil such as Soil pH, Cation exchange capacity (CEC), soil salinity can be efficiently determined by electrical resistivity of soil. The basic principal of obtaining chemical resistivity of soil through electrical resistivity is either to measure the current that flows between the probes which is inversely proportional to the resistance of the soil when a constant voltage is applied to one of the two probes placed in the soil or to directly measure the electrical resistivity using electromagnetic waves of different frequencies into soils. For this purpose methods of self- potential (SP), four electrode probe method, electrical profiling (EP), vertical electrical sounding (VES), and non-contact electromagnetic profiling (NEP) was used to measure the electrical properties of soil.
Highlights
Determination of soil che mica l properties is very essential for both construction and agricultural purpose
Non-contact electro magnetic profiling Vertica l e lectrical sounding (VES) and electrical p rofiling (EP) methods measure electrical resistivity or conductivity of soil to any depth when a constant electrical field is artificially created on the surface
The methods do not require a physical contact with the soil surface and can measure electrical resistivity or conductivity in soils covered with firm pavement
Summary
Determination of soil che mica l properties is very essential for both construction and agricultural purpose. To adequately characterize different types of soil for foundation of structures it is necessary to accumulate sufficient data regarding soil chemica l properties. Conventional methods of soil analysis mostly require disturbing soil, removing soil samples, and analysing them in a laboratory. Electrical geophysical methods, such as self- potential (SP), four electrode probe method, electrical profiling ( EP), vertical electrical sounding (VES), and non-contact electromagnetic profiling (NEP) allow rapid measurement of soil electrical properties, such as electrical conductivity, resistivity directly fro m soil surface to any depth without soil disturbance. 2. Chemical Properties of Soil range of optimu m solubility of most important plant nutrients. Most of the heavy metals and some minor elements are more soluble at lower pH
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
