RESEARCHES REGARDING SOME VEGETAL EXTRACTS EFFICACY IN CONTROL OF PEACH MOTHS
The oriental peach moth (Cydia molesta Busch) and peach twig borer (Anarsia lineatella Zell), represent the most damaging pest species, with economic importance, for the peach culture in the South Eastern part of Romania. The larva of the first generations attacks only the shoots, but the larvae belonging to the next generations, attack both the growing shoots and the fruits as well, when fruits color advance. As a consequence, the shoots wilts and dye and the fruits fall down or became to rot, losing their commercial value. In order to control these two small Lepidoptera, the exclusive use of synthetic insecticides, represent a main source for the fruits and environment pollution, affecting the human health. Aiming to prevent these negative effects, this work goal was to determine the biological efficacy of some vegetal extracts, and then to include them in the integrated management program of the two peach pests species. To achieve this goal, extracts of tomato (Lycopersicon esculentum Mill.), onion (Allium cepa L.), tobacco (Nicotiana tabacum L.) and common nettle (Urtica dioica L.) were tested. The experiment included the Southland peach cultivar. To find out the optimum timing for application, pheromone traps like Atramol and Atralin were employed and the sprays were done only when the economic damage threshold (E.D.T.) was exceeded, namely 80-100 butterflies per trap, per week. The results recorded with those vegetal extracts applied to control Cydia molesta Busch and Anarsia lineatella Zell, have enabled to estimate them as a certain alternative to the pest chemical control. The vegetal extracts values will be enhanced having in view they are harmless to human beings, to the environment and the useful entomofauna, and not maintain their toxic residues in fruit.
Trandafirescu, M. and Septar, L. (2013). RESEARCHES REGARDING SOME VEGETAL EXTRACTS EFFICACY IN CONTROL OF PEACH MOTHS. Acta Hortic. 981, 533-537
damage economic threshold, peach twig borer, oriental peach moth