Field evaluation of whorl application of sand mixed entomopathogenic nematodes for the management of invasive fall armyworm, Spodoptera frugiperda (J. E. Smith) (Lepidoptera: Noctu... oleh B. Ratnakala, C. M. Kalleshwaraswamy, M. Rajkumar, Sharanabasappa S. Deshmukh, H. B. Mallikarjuna, Lakshmi Narasimhaiah