Pheromone monitoring of harmful Lepidopterae pre-sent in Bistrita area in apple and plum orchards

Irina Ciotlaus,Ana Balea,Sorin Roșu-Mares,Adriana Andreica,Maria Pojar - Fenesan

doi:10.51258/rjh.2021.13

Abstract

Pheromone monitoring of harmful Lepidopterae pre-sent in Bistrita area in apple and plum orchards

Highlights

Bistrita region is a traditional area for fruit growing, apple and plum being the most frequent species in this area’s orchards
Sex pheromones emitted by females to attract the males, currently used as lures are an E8, E10-dodecadien-1-yl acetate and Z8dodecen-1-yl acetate mixture (Roelofs and Brown, 1982) for monitoring Hedya nubiferana and compound Z8-tetradecen-1-yl acetate proposed by McBrien et al (1992), for Spilonota ocellana
The present study showed significant variation in the presence and population density of harmful species of Lepidoptera in apple and plum orchards in Bistrita county

Summary

Introduction

Bistrita region is a traditional area for fruit growing, apple and plum being the most frequent species in this area’s orchards. The use of pheromones had a great impact for monitoring the flight of the adult males This allowed more precise use of the insecticides in conventional control programs and implementation of the “attract and kill”, mass trapping (Ghizdavu et al, 1987) or mating disruption as methods of controlling pests in Integrated Pest Management and biological control of the harmful Lepidoptera. Studies performed in Canada (Smirle et al, 1998) indicate that the resistance developed by Lepidoptera species can be reversed when the resistant population is no longer exposed to that insecticide This is a relevant aspect that makes the use of pheromones in mating disruption or other biological methods of control, very important. Pheromone synthesis continues to be improved and was studied and performed in Romania for numerous Lepidoptera species such as: Leucoptera scitella (Ciocan-Tarta et al, 1998), Phyllonoricter blancardella (Gânscă et al, 2001; Vasian et al, 2013), Grapholita molesta, Cydia funebrana (Ciotlăuș et al, 2017) and Hedya nubiferana. This study aimed to find out what is the spread area and what is the density of the populations of the above-mentioned species so that the mating disruption by using pheromones can be proposed as biological control method for the studied locations

Objectives

Methods

Results

Conclusion