Population dynamics of major phototactic insect pests of chickpea ecosystem through light trap

DOI: 10.18805/LR-4141    | Article Id: LR-4141 | Page : 289-293
Citation :- Population dynamics of major phototactic insect pests of chickpea ecosystem through light trap.Legume Research-An International Journal.2020.(43):289-293
Amit Kumar Sharma, Rajesh Aarwe, A.K. Bhowmick, A.S. Thakur and Radheshyam Sharma amitsharma2375@gmail.com
Address : Department of Entomology, College of Agriculture, Jawaharlal Nehru Krishi Vishwa Vidyalaya, Jabalpur-482 004, Madhya Pradesh, India.
Submitted Date : 29-03-2019
Accepted Date : 27-06-2019

Abstract

An investigation was carried out at Experimental Farm, JNKVV, Jabalpur (MP) during 2016 - 2017 to know the population dynamics of major phototactic insect pests using Jawahar light trap in chickpea ecosystem. The present study revealed that gram pod borer was first recorded during 45th SW in light trap. The activity period of Helicoverpa armigera was noticed from November 2016 to April 2017 with two distinct peaks during 13th and 14th SW. The highest peak was observed in 14thSW. Cutworm was first recorded during 46th SW in light trap. Three distinct peaks were observed during 4th, 12th and 16th SW with highest peak was observed in 12th SW. Tobacco caterpillar was also firstly recorded during 46th SW in light trap with one distinct peak during 13th SW. Further, the correlation studies revealed that maximum temperature, minimum temperature, sunshine, wind velocity, morning vapor pressure and evaporation showed significant positive correlation whilemorning relative humidity and evening relative humidity, showed negative correlation with Helicoverpa armigera, Agrotis ipsilon (Hufnagel) and Spodoptera litura (Fabricius) moth catches and statistically found significant except wind velocity which wasnon-significant against Agrotis ipsilon (Hufnagel). Rest of the weather parameters were found non-significant.

Keywords

Chickpea Insect pests Light Trap Population dynamics

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