The european peach scale Parthenolecanium persicae is one of the most important grape pest in southern Brasil. The insecticides dimetoato (Tiomet 400 CE, 100mL/100L), fenitrotion (Sumithion 500 CE, 150mL/100L), metidation (Supracid 400 CE, 100mL/100L), paratiom metil (Folidol 600 CE, 100mL/100L) and triclorfon (Dipterex 500 SNAqC, 300mL/100L) were evaluated in a field experiment in 2001 and imidacloprid (Provado 200 SC, 30, 40 and 50mL/100L), tiacloprid (Calypso 480 SC, 20, 30 and 40mL/100L), tiametoxam (Actara 250 WG, 20, 30 and 40 g/100L) and paratiom metil (Folidol 600 CE, 100mL/100L) in 2002. Insecticides were sprayed using 800L of water.ha-1 seeking third instar nymphs. Phosporous insecticides fenitrotion, metidation, paratiom metil and triclorfon and the neonicotinoid imidacloprid and tiametoxam were efficient for P. persicae control. Dimetoato and tiacloprid were not efficient for insect control reducing pest population in levels bellow 50%.
chemicalcontrol; neonicotinoid; organophosphorus; Vitis ssp
