Population Dynamics of Helicoverpa armigera in Chickpea, (Cicer arietinum L.)
Ragni Devi *
Department of Entomology, Acharya Narendra Deva University of Agriculture and Technology, Kumarganj, Ayodhya- 224229 (U.P.), India.
Umesh Chandra
Department of Entomology, Acharya Narendra Deva University of Agriculture and Technology, Kumarganj, Ayodhya- 224229 (U.P.), India.
Pankaj Kumar
Department of Entomology, Acharya Narendra Deva University of Agriculture and Technology, Kumarganj, Ayodhya- 224229 (U.P.), India.
Sameer Kumar Singh
Department of Entomology, Acharya Narendra Deva University of Agriculture and Technology, Kumarganj, Ayodhya- 224229 (U.P.), India.
Ravi Kumar Rajak
Department of Entomology, Acharya Narendra Deva University of Agriculture and Technology, Kumarganj, Ayodhya- 224229 (U.P.), India.
*Author to whom correspondence should be addressed.
Abstract
The present studies on population dynamics of gram pod borer insect pest were carried out at Students’ Instructional Farm (SIF) of Acharya Narendra Deva University of Agriculture & Technology, Kumarganj, Ayodhya (UP), India during Rabi 2022-23 and 2023-24. The present study revealed that gram pod borer, Helicoverpa armigera was commenced from the first fortnight of November and touched the highest at 8th SMW (2.98 pod borer larvae per plant) and 7th SMW (3.54 pod borer larvae per plant) in both the year, respectively. The population of H. armigera had a non-significant positive correlation with rainfall (r= 0.101) in Rabi 2022-23. The population of H. armigera had a significant positive correlation with wind speed (r= 0.495*) in Rabi 2023-24.
Keywords: Population dynamics, rabi chickpea, gram pod borer