Aphid abundance per week (a); and their seasonal counts (b) per plant from irrigation-stressed and unstressed wheat crop in the field at University farm in Multan, Pakistan, in 2019. * and *** indicates significant difference at P<0.05 and P<0.001; ns indicates non-significant difference. Bars topped by the same letters are not significantly different (P˃0.05; LSD test). T: duration of tillering stage; B: duration of booting stage; H; duration of heading stage; G: duration of grain formation stage.