Indian Journal of Entomology

Open Access
SCOPUSWeb of Science
  • Year: 2021
  • Volume: 83
  • Issue: 3

Population Dynamics of Major Insect Pests and Their Predatory Fauna in Mulberry

  • Author:
  • Ayan Das, Bimal Mondal, Hirak Chatterjee1
  • Total Page Count: 5
  • Published Online: Oct 29, 2021
  • Page Number: 310 to 314

Department of Agricultural Entomology, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur741252, West Bengal, India

1Department of Agricultural Entomology, Palli Siksha Bhabana, Institute of Agriculture, Visva Bharati, Sriniketan731236, West Bengal, India

Abstract

Mulberry is invaded by a variety of polyphagous pests, causing serious economic loss and severely hampering the sericulture industry. The present study evaluates the population dynamics of the prevailing major insect pests of mulberry and their natural enemies. The results revealed that the pest incidence reached its peak during 35th standard week (SW) in case of whitefly (Dialeuropora decempuncta Quaintaince and Baker; Aleuroclava pentatuberculata Sundararaj and David) (32.67/ leaf), 23rd SW for thrips (Pseudodendrothrips mori Niwa) (36.67/ leaf) and 28th SW for mealy bug (Maconellicoccus hirsutus Green) (40.50% tukra infestation). The predatory fauna was found throughout the season with varying numbers. The correlation coefficients showed a significant positive correlation between maximum temperature with thrips and spiders; minimum temperature with whitefly, mealybug and coccinellids; relative humidity with whitefly, mealybug and coccinellid; bright sunshine hour with thrips and spider; wind speed with thrips and mealybugs; while a significant negative correlation was obtained between temperature gradient and whitefly, mealybug and coccinellids; and rainfall with spiders and bright sunshine hours with whitefly.

Keywords

Mulberry, Dialeuropora decempuncta, Aleuroclava pentatuberculata, Pseudodendrothrips mori, Maconellicoccus hirsutus, Predator, Weather factors, Correlation coefficients