SIMWAT, G.S. and DHAWAN, A.K. (2013) “Field evaluation of different economic threshold levels for chemical control of pink bollworm (Pectinophora gossypiella), spotted bollworm (Earias vittella, E. insulana) and cotton bollworm (Helicoverpa armigera) on cotton (Gossypium species)”, The Indian Journal of Agricultural Sciences, 67(6). Available at: https://epubs.icar.org.in/index.php/IJAgS/article/view/29912 (Accessed: 14 June 2026).