Study the Population Dynamics of Major Insect Pest of Niger (Guizotia abyssinica) Crop
Deepali Vishwakarma *
Rajmata Vijayaraje Scindia Krishi Vishwa Vidyalaya, Gwalior, Madhya Pradesh- 474002, India.
Anand Kumar Panday
Department of Entomology, Jawaharlal Nehru Krishi Vishwa Vidyalaya, Jabalpur, Madhya Pradesh- 482004, India.
Ritu Pandey
Department of Entomology, Jawaharlal Nehru Krishi Vishwa Vidyalaya, Jabalpur, Madhya Pradesh- 482004, India.
Yogesh Kumar
Willwood Chemicals Pvt. Ltd., India.
Dwarka
Department of Entomology, Jawaharlal Nehru Krishi Vishwa Vidyalaya, Jabalpur, Madhya Pradesh- 482004, India.
Surabhi Jain
Department of Entomology, Jawaharlal Nehru Krishi Vishwa Vidyalaya, Jabalpur, Madhya Pradesh- 482004, India.
*Author to whom correspondence should be addressed.
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.
Keywords: Population dynamics, Niger, capsule fly, Nezara bug, whitefly, leafhopper, stink bug