Effects of Imidacloprid, Cartap and Different Formulations of Fipronil, on the Vine Cicada, Psalmocharias alhageos (Kol.) Under Field Conditions

Vine Cicada, Psalmocharias alhageos (Hom.: Cicadidae), is a key pest of vine in Iran. Pest nymphs feed on vine roots sap and their adults damage the vines by ovipositing in branches. In a field study, during two years based on a random complete block design, with 8 treatments and 6 replications, the efficacy of two formulations of Fipronil (SC 5% and G 0.02% g/vine) at different concentrations, imidacloprid (Confidor® 350SC) (at 20 ml/vine) and cartap (Padan 0.5% g/vine) were assessed against Vine Cicada in Hamedan province. Treatments were applied in March 2012 and 2013, by making a 20-cm groove with a radius of one meter at under the canopy of vines. The number of nymphal exit holes and vine yield were subjected to analysis of variance followed by Duncan’s test. Based on The results 2012 and 2013, number of exit holes were observed for imidacloprid (3.33, 0.43), Foreign fipronil at 50 g (4.86, 1.56), and Iranian imported fipronil at 50 g of granule /vine (5.76, 1.68), respectively. The highest yield was observed in imidacloprid (3216.7, 3000 g/grape cluster) and Iranian fipronil at 50 g of granule /vine (2966.7, 2900 g/grape cluster), while the lowest yield was observed in control (566.7 g/grape cluster, 483.3 g/grape cluster) in two years stung, respectively. Based on our results, fipronil (G 0.02%) (at 50 g/vine) and imidacloprid (Confidor® SC 350) at 20 ml/vine can reduce population of vine cicada and increase yield if applied at suitable time.