Study the Population Dynamics of Major Insect Pest of Niger (Guizotia abyssinica) Crop

Abstract

An experiment conducted at PC Unit, Sesame & Niger, JNKVV, Jabalpur, Madhya Pradesh during Pre-rabi season 2020-2021. Experiment was laid out in variety was JNC-6. The correlation studies between meteorological parameters and population of whitefly showed that mini. temp. (r= -0.681), relative humidity morning (r= -0.607) vapour pr. mor. (r= -0.642) and evening (r= -0.626) had significant negative impact on the incidence of whitefly. The other weather variables had non-significant (±) impact the incidence of whitefly. Correlation studies carried out between meteorological parameters and population of Nezara bug showed that maximum temperature (r= -0.756) and evaporation (r= -0.791) had significant negative impact on the incidence of Nezara bug. The other weather parameters had non-significant (±) impact on the incidence of stink bug. Correlation studies showed that the sunshine hours (r =-787) showed significant negative correlation while wind speed (r =0.826) had significant positive correlation with incidence of capsule fly. The other weather parameters had non-significant (±) impact on the incidence of capsule fly.