Singh, J. and Sandhu, B.S. (2012) “Economic threshold for chemical control of spotted bollworms (Earias vittella and E. insulana) and pink bollworm (Pectino phora gossypiella) on tree cotton (Gossypium arboreum)”, The Indian Journal of Agricultural Sciences, 65(8). Available at: https://epubs.icar.org.in/index.php/IJAgS/article/view/18981 (Accessed: 27 June 2026).