Indian Journal of Entomology
Open Access
SCOPUSWeb of Science
  • Year: 2023
  • Volume: 85
  • Issue: 2

Seasonal incidence of fall army worm Spodoptera frugiperda in maize

  • Author:
  • R Darshan*, P M Prasanna1
  • Total Page Count: 3
  • Published Online: Jul 11, 2023
  • Page Number: 459 to 461

1Department of Agricultural Entomology, College of Agriculture (UAS-D), Hanumanamatti581115, Karnataka, India

Department of Agricultural Entomology, College of Agriculture, University of Agricultural Sciences-Dharwad (UAS-D), Dharwad580005, Karnataka, India

*Email: darshanr703@gmail.com (corresponding author)

Online Published on 11 July, 2023.

Abstract

The fall army worm Spodoptera frugiperda (J E Smith) is a polyphagous invasive pest, initially reported from Karnataka. A roving survey was conducted during two cropping seasons at fortnightly interval during kharif and rabi of 2019-20 to know the status of the pest in Haveri district. The results revealed that the larval counts and % infestation was 0.30 to 0.44 larvae/ plant and 23.10 to 33.77%, respectively. Parasitisation by two larval parasitoids viz., Campoletis chlorideae (Hymenoptera: Ichneumonidae) and Exorista xanthaspis (Diptera: Tachinidae) and infection by an entomopathogenic fungi, Metarhizium rileyi were also observed.

Keywords

Spodoptera frugiperda, Maize, Karnataka, Natural enemies, Parasitoids, Entomopathogenic fungi, Kharif, Rabi, Population dynamics, Correlation coefficients