P. PATIRAM and R. C. UPADHYAYA, “Calcium, magnesium and potassium status of mandarin orange (Citrus reticulata) orchards in Sikkim*”, Indian J Agri Sci, vol. 67, no. 1, May 2013, Accessed: Jun. 14, 2026. [Online]. Available: https://epubs.icar.org.in/index.php/IJAgS/article/view/29843