@article{AltEnergy-Ecology-EnvironmentJ, author = {VK Gupta}, title = { Passive Microwave Study of Salt Affected Agricultural Soil}, journal = {Journal of Advanced Research in Alternative Energy, Environment and Ecology}, volume = {5}, number = {1&2}, year = {2021}, keywords = {}, abstract = {Salt affected agricultural soil from superficial horizon of local profile of Alwar region with texturalcomposition sand=30.2%, silt=59.7% and clay=10.1% has been selected for an estimation of observableparameter of passive microwave remote sensing. Artificially salinized and moistened soil samples withdifferent concentrations in part per million (ppm) of Sodium Chloride corresponding to 0 ppm to 35000ppm soluble in conductivity water are prepared.The real and imaginary parts of dielectric constant ε’ andε” for artificially moistened and salinized soil with Sodium Chloride are determined at different levelsof salinization. Real and imaginary part of dielectric constant is measured by wave-guide cell method ata single microwave frequency 9.78 GHz and at constant temperature 330C. The Fresnel reflectivity ofsalinized and moistened soil is determined for different observation angles. Further, Microwave emissivityof salinized soil is also calculated with suitable model calculations in view of passive microwave remotesensing. Microwave emissivity decreases with both salinity and moistness. Effect of salinity on emissivityis very small and considerable only at higher wetness of soil. In dry soils no impact of salinity observed onemission behaviour. High dielectric contrast between emitting layer of soil and air causes more energy toreflect back within the soil media than that of transmitted out in air. Hence, emissivity of soil decreasesas salinity increases. How to cite this article: Gupta VK. Passive Microwave study of salt affected agricultural Soil. J Adv Res Alt Energ Env Eco 2018;5(1&2): 37-40.}, issn = {2455-3093}, pages = {37--40}, url = {http://www.thejournalshouse.com/index.php/AltEnergy-Ecology-EnvironmentJ/article/view/292} }