[1]
M. Joseph and B. Sudhakumari, “Assessment of Zinc Availability in the Ultisols of South India under Rubber Cultivation”, JISSS, vol. 61, no. 1, Jul. 2013, Accessed: Jul. 17, 2026. [Online]. Available: https://epubs.icar.org.in/index.php/JISSS/article/view/31752