Efficacy of insecticides of different mode of action in green apple aphid (Aphis pomi De Geer) control in apple orchards

Abstract

Using standard EPPO method, field trials were conducted in 2008 and 2009, in order to investigate the efficacy of insecticides of different mode of action in green apple aphid (Aphis pomi De Geer) control The results of the field trials at the localities of Radmilovac (RA) and Bela Crkva (BC) indicated high efficacy of acetamiprid (92.8-100%) in the control of A. pomi. At the RA locality, high efficacy (91.8-98.8%) was achieved by using the combinations of chlorpyrifos and cypermethrin, pirimicarb and acetamiprid, dimethoate with piperonyl butoxide and mineral oil, and pymetrozine. At both localities, chlorpyrifos proved more efficient (95.9-97.4%) than lambda-cyhalothrin (BC: 71.4-91.8%; RA: 57.7-88.0%). The initial effect of chlorpyrifos was similar to that of acetamiprid, but its residual effect was weaker (81.6-83.1%) 15 DAT. Although the efficacy of pirimicarb was poor (77.5-82.7%) at the BC locality, it proved more efficient than dimethoate (52.6-78.4%). At the RA locality, the initial and residual effects of dimethoate were also poor (40.9-75.7%). The efficacy of pirimicarb was very poor (37.6-46.8%) at the RA locality.

Tokom 2008. i 2009. godine ispitana je efikasnost insekticida različitih mehanizama delovanja u suzbijanju zelene vaši jabuke (Aphis pomi De Geer) izvođenjem poljskih ogleda u skladu sa standardnom EPPO metodom. Rezultati poljskih ogleda na lokalitetima Radmilovac (RA) i Bela Crkva (BC) ukazali su na dobru efikasnost acetamiprida (92,8-100%) u suzbijanju A. pomi. Dobra efikasnost (91,8-98,8%) na lokalitetu RA postignuta je i primenom kombinacija hlorpirifosa i cipermetrina, pirimikarba i acetamiprida, dimetoata sa piperonil butoksidom i mineralnim uljem i pimetrozina. Na lokalitetima RA i BC hlorpirifos je ispoljio bolju efikasnost (95,9-97,4%) od lambda -- cihalotrina (BC: 71,4-91,8%; RA: 57,7-88,0%). Hlorpirifos je imao slično inicijalno delovanje kao i acetamiprid, ali slabije rezidualno delovanje (81,6-83,1%) 15 dana posle tretiranja. Slabiju efikasnost (77,5-82,7%) na lokalitetu BC ispoljio je pirimikarb, pri čemu je bio efikasniji od dimetoata (52,6-78,4%). Dimetoat je na lokalitetu RA, takođe, ispoljio slabo inicijalno i rezidualno delovanje (40,9-75,7%). Efikasnost pirimikarba na ovom lokalitetu bila je veoma slaba (37,6-46,8%). .