author(s)
Imtiaz Ali Khan, Sajjad Hussain, Rasheed Akbar, Muhammad Saeed, Abid Farid, Ijaz Ali, Mukhtar Alam, Bismillah Shah

abstract
Pea aphid Acyrthosiphon pisum (Harris) (Hemiptera: Aphididae)is a major insect pest of pea in Peshawar, causing heavy losses to it each year. Synthetic insecticides have been routinely used for the control of insect pests of pea, but there are many side effects with the regular use of synthetics on pea crop. In the present study, efficacy of a biopesticide and three synthetic insecticides were compared against A. pisum on pea during 2005. The experiment was laid out in Randomized Complete Block Design (RCBD) at the New Developmental Farm (NDF) of the University of Agriculture Peshawar (UAP) in 2005 -2006. The results revealed that after 1st and 2nd chemical application overall mean density of A. pisum was significantly lower in larsban (2.01, 5.11 aphids leaf-1) and megamos (2.32, 5.94 aphids leaf-1). In control mean density of A. pisum remained significantly higher than all the treatments after each chemical application. Pea yield was significantly higher in larsban (3323 kg ha-1) and lower in control (2352 kg ha-1). The findings of the present research might help in better control of insect pest of pea crop in Peshawar.