Control of Green Apple Aphid (Aphis pomi De Geer) in Organic Apple Production

Abstract

The efficacy of different methods for controlling populations of green apple aphid (Aphis pomi De Geer) in organic apple orchard was compared over three consecutive years. The following three control methods were tested: a) predator activity (Coccinela septempunctata), b) predator activity (C. septempunctata) + selective spraying of trees with infestation level exceeding 10% with a botanical insecticide (NeemAzal T/S), and c) predator activity (C. septempunctata) + total spraying of all orchard trees with the botanical insecticide (NeemAzal T/S). In terms of maintaining a biological balance within an orchard, the combination of natural regulation by C. septempunctata and selective spraying of individual trees with NeemAzal T/S proved to be the most efficient method.

Upoređivana je efikasnost različitih metoda suzbijanja populacija zelene vaši jabuke (Aphis pomi De Geer) u organskom zasadu jabuka tokom tri godine. Ispitane su tri metode suzbijanja: a) aktivnost predatora (Coccinela septempunctata), b) aktivnost predatora (C. septempunctata) + selektovno prskanje stabala sa preko 10% zaraženosti botaničkim insekticidom (NeemAzal T/S) i c) aktivnost predatora (C. septempunctata) + prskanje svih stabala u voćnjaku botaničkim insekticidom (NeemAzal T/S). Sa stanovišta održavanja biološke ravnoteže u voćnjaku, najefikasniji metod predstavljala je kombinacija prirodne regulacije putem vrste C. septempunctata i selektivnog prskanja pojedinačnih stabala preparatom NeemAzal T/S.