EFFECT OF DIFFERENT CHEMICAL PESTICIDES ON MUSTARD APHID (LIPAPHIS ERYSIMI) AND THEIR ADVERSE EFFECTS ON LADYBIRD BEETLE

The present research was carried out at Agricultural Research Institute, Tarnab, Peshawar, Pakistan during 2008 to study the effect of different chemical pesticides on mustard aphid (L. erysimi) and their adverse effects on Ladybird beetle in Turnip field. The experiments were carried out with eight treatments, Actara® (low) @ 5g/100 lit water, Actara® (medium) @ 10g/100 lit water, Actara® (high) @ 15g/100 lit water, Confidor® (low) @ 80ml/100ml lit water, Confidor® (medium) @100ml/100 lit water, Confidor® (high) @ 120ml/100 lit water, Fastkil® @ 200ml/100 liter of water with a control. Results showed that Fastkil was more toxic to the mustard aphid (L. erysimi) population followed by Actara (high), Actara (medium) and Actare (low), respectively. Fastkil was found most lethal for the ladybird beetle population followed by Confidor (high), Actara (low), Confidor (low), Confidor (medium), and Actara (medium) respectively. The study recommends the use of Actara for the safe and effective control of mustard aphid (L. erysimi). Farmers should use Actara for the control of Aphids (L. erysimi) in the field as it is the least toxic to ladybird beetle population.