Effect of different cultivars of garden pea on population growth parameters of pea leafminer, Chromatomyia horticola (Goureau) (Diptera: Agromyzidae).

Pea leafminer, Chromatomyia horticola is one of the serious pests of pea in the major pea-growing regions of India. The effect of different cultivars on the biology and fertility parameters of pea leafminer was studied at 25 ± 1°C, 60–65% relative humidity and 12:12 h photoperiod during 2022. The development time for immature stages was significantly different between cultivars as follows: Azad P-1 < Pusa Pragati < Him Palam Matar-1. Population parameters like the intrinsic rate of increase (rm) (0.1752 day-1), the net reproductive rate (R0) (85.25 female eggs/female) and finite rate of increase (ℷ) (1.1915 females/day) were observed to be highest on Azad P-1 cultivar. The highest fecundity of 227 eggs per female was also observed on Azad P-1 cultivar. No significant differences were observed in the mean generation time and doubling time of leafminer on all three cultivars. [ABSTRACT FROM AUTHOR]