K. SANDHU and R. L. BANSAL, “Evaluation of soil-test methods for predicting iron availability to sorghum (Sorghum bicolor) in alluvial soils of Punjab, India”, Indian J Agri Sci, vol. 71, no. 12, May 2014, Accessed: Oct. 24, 2025. [Online]. Available: https://epubs.icar.org.in/index.php/IJAgS/article/view/40508