1Department of Entomology, Bihar Agricultural University, Sabour, 813210, Bihar, India
2Entomology, ICAR-IARI, Regional Station, Pusa, Samastipur, 848125, Bihar, India
*Email: tamoghnasaha1984@gmail.com (corresponding author):
Online published on 13 March, 2026.
A lifetable study of okra shoot and fruit borer (Earias vittella) was conducted in the laboratory and field during the kharif, 2023-24, at Bihar Agricultural University, India. E. vittella had a mortality rate of 22.94% due to hatching failure, in laboratory conditions, and 24.55% in field conditions due to hatchingfailure of eggs. The early instar larvae had a mortality of 35.88%, and 21.43% in the late instar due to physiological disorders in the laboratory conditions, whereas the early instar larvae and late instar larvae in the field conditions showed a mortality %age of 34.24% due to physiological disorders and 20.10% due to unknown factors, respectively. The pupae had a mortality of 16.67% in the laboratory and 18.06% in the field conditions. No mortality is recorded in adult stage in any conditions under study.
Earias vittella, Okra, Lifetable, Key mortality factors, Early instar larva, Late instar larva, Hatching, Eggs, Physiological disorders, Pupa, Adult
