Efficiency of Acephate (Lancer® DF 97%) Insecticide on Aphids, in Bean Field

Bean is one of the most important sources of protein. Aphids, are important pests of this crop. For the assessment of of Acephate (Lancer® DF 97%) efficacy on Aphids, in Bean Field, three locations in Kermanshah, Markazi and Lorestan provinces were selected. This study was implemented in a completely randomized complete block design with 5 treatments and 3 replications. Treatments including required insecticides Acephate (Lancers® DF 97% at 1 and 0.75 kg ha-1) (2.5 and 1.8 g/l), Imidacloprid (Confidor® SC 35 %) at 250 ml ha-1, (0.6 ml/l) Pymetrozine (Chess® WG 50%) at 0.5 kg ha-1, (1.25 g/l) Pirimicarb (Pirimor® WP 50%) at 0.5 kg ha-1, (1.25 g/l) and control (WATER). Spraying was performed in each area according to the time of pest emergence. Samples were collected one day before and 3, 7 and 14 days after treatments. Leaf sampling was used to determine aphid density of each plot. The results showed that on the third day after spraying in Kermanshah, Imidacloprid and Acephate treatments at concentrations of 1 and 0.75 kg ha-1 respectively, had the highest effect. At the same time, in the Markazi province, Acephate 1kg ha-1 was significantly different from other treatments. In Lorestan, on the third day, no significant differences were observed between treatments, but the Acephate 1 kg ha-1 was the highest efficiency. Acephate (0.75 kg ha-1) can be recommended for bean aphid's control.