S. R. . SINGH, S. . RAJAN, D. . KUMAR, and K. K. . SRIVASTAVA, “Optimising electrical conductivity, pH and cultivar selection to enhance yield and nutritional quality of hydroponic lettuce (Lactuca sativa)in subtropical environments”, Indian J Agri Sci, vol. 96, no. 2, pp. 170–176, Feb. 2026, doi: 10.56093/ijas.v96i02.169868.