Indian Journal of Entomology
Open Access
SCOPUSWeb of Science
  • Year: 2024
  • Volume: 86
  • Issue: 3

Population dynamics of fall army worm, Spodoptera frugiperda (J E Smith) infesting maize

  • Author:
  • K C Ahir1,*, M K Mahla1, N L Dangi1, Kuldeep Sharma1, Beerendra Singh1
  • Total Page Count: 3
  • Published Online: Mar 1, 2025
  • Page Number: 972 to 974

1Maharana Pratap University of Agriculture and Technology, Department of Entomology, Rajasthan College of Agriculture, Udaipur, 313001, Rajasthan, India

*Email: kcahirento@gmail.com (corresponding author): ORCID ID 0000-0002-5459-1817

Online published on 1 April, 2025.

Abstract

Fall army worm (FAW) Spodoptera frugiperda (J E Smith) was found as major pest of maize in Rajasthan. Its peak larval incidence was observed in the first week of August (2.08 larvae/ plant) and second week of August (2.47 larvae/ plant) during 2019 and 2020, respectively. Its damage increased with crop growth and reached up to 48.33 and 58.33% during last week of September (39th SMW) during 2019 and 2020, respectively. The cob damage started in first week of September and peak damage was (36.67 and 42.22%) in the last week of September. Larval incidence exhibited positively significant correlation with mean temperature, and negative significance with rainfall.

Keywords

Spodoptera frugiperda, Population dynamics, Maize, Incidence, Correlation, Coefficient, Damage, Temprature, Rainfall, Seasonal variations, Cob damage