Pest Management in Horticultural Ecosystems
  • Year: 2022
  • Volume: 28
  • Issue: 2

Parasitisation efficiency of Tetrastichus howardi olliff (Hymenoptera: Eulophidae) on Diaphania pulverulentalis hampson (Lepidoptera: Pyralidae) pupae at different depths of soil

1Department of Sericulture Science, University of Mysore, Manasagangotri, Mysuru-570006

2Central Sericultural Research & Training Institute, Mysore-570008

3Research Extension Centre, Central Silk Board, Madivala, Kurugal Post, Kolar, District-563 157

*E-mail: harshitha.shekar14@gmail.com

Online published on 26 June, 2023.

Abstract

A laboratory experiment was carried out to determine the parasitization efficiency of Tetrastichus howardi (Hymenoptera: Eulophidae) on the pupae of Diaphania pulverulentalis Hampson (Lepidoptera: Pyralidae) at various soil depths. The results showed that the parasitoid successfully parasitized the host pupa at various depths, but the emergence rate was highest (96%) when the pupae were on the top layer of soil, followed by 2cm (90%), 4cm (84%), and 6cm (86%).

Keywords

Tetrastichus howardi, Diaphania pulverulentalis, Parasitoid, Mulberry