Karegoudar, A.V. et al. 2025. Evaluating the Spacing in Free and Controlled Subsurface Drainage Systems in Saline Vertisols of the Tungabhadra Project Command Area, Karnataka, India: Evaluating space in subsurface drainage system for saline vertisols. Journal of Soil Salinity and Water Quality. 17, 2 (Oct. 2025), 129–145. DOI:https://doi.org/10.56093/jsswq.v17i2.171822.