author(s)
Kapil Kumar Soni, Akhilesh Kumar, Prakhar Srivastava, Pushpendra Singh Sahu and Hadi Husain Khan

abstract
Population dynamics of two important insects of Pigeonpea belonging to the order Lepidoptera i.e Pigeonpea pod borer, Helicoverpa armigera and Diptera order i.e Pigeonpea pod fly, Melanagromyza obtusa was studied in Pigeonpea under the condition of Rewa district during the Kharif 2016 -2017. Studies conducted on the population dynamics of Pigeonpea pod borer in the agro climatic condition of Rewa region indicated its incidence from 1^st week of October 2016 to 4^th week of December 2016. The initial average population of 0.13 pigeonpea pod borer per five plants/week and 0.72 per five plants was recorded in the month of October 2016 which rose to 0.44 to 0.79 pigeonpea pod borer per five plants/week and 0.61 pigeonpea pod borer per five plants in the month of November 2016. The peak of the population was recorded in the fourth week of October 2016. There after the population of the pest started decreasing gradually and mostly disappeared in the 1^st week of January, 2017. Studies conducted on the population dynamics of Pigeonpea pod fly in the agro climatic condition of Rewa region indicated its incidence from 4^th week of October 2016 to 4^th week of December 2016. Pigeonpea pod fly infestation was noted late in the Kharif season and also its sequence among defoliating insects marked as a late comer but continued to persist up to harvesting of the crop. The initial average maggot population of 0.10 larvae/ 4^th week and 0.06 maggot/10 pods/month was recorded in the month of October 2016 which rose to 0.10 to 0.67 maggot/10 pods/week and 0.36 maggot/10 pods in the month of November 2016 which gradual increased up to 49^th week (Dec. 1^st week 2016) the number of the maggots in per 10 pods was recorded between 0.03 to 1.2 maggots/week with an average of 0.70 maggot/10 pods/ in the month of December 2016.