FLIGHT MONITORING OF ORIENTAL FRUIT MOTH, CYDIA MOLESTA, AND PEACH TWIG BORER, ANARSIA LINEATELLA, BY PHEROMONE TRAPS IN APRICOT ORCHARD OF NORTH-EAST BULGARIA

In the years 2004-2006, seasonal flight monitoring of oriental fruit moth (OFM), Cydia molesta, and peach twig borer (PTB), Anarsia lineatella was conducted using pheromone traps, in a commercial 3.5-ha orchard, located near Tutrakan in North-East Bulgaria.
Pherocon (Trécé, USA) traps with sticky changeable bottom and pheromone baits, also products of Trécé, were employed.
The traps were installed in the middle of April and removed at the end of October, i.e. 2-4 weeks after the last catches.
Traps were checked weekly and the caught moths removed after counting.
The pheromone baits were replaced every month.
In the years of study, the earliest catches of the overwintering OFM generation were recorded at the beginning of May, whereas PTB moths usually appeared in the first ten days of May, few days after OFM. The mass flight of OFM in 2004 was recorded during the third ten days of May, in 2005 at the beginning of June and in 2006 in the second ten days of May.
The first peak of PTB flights was noted in the 3rd ten days of May in all three years of study. A. lineatella developed three generations per year whereas C. molesta four generations.
The results of this investigation will be used for perfecting the usage of pheromone traps for these pests, thus improving prognosis of their appearance in North-East Bulgaria.
This should be helpful in determining the optimal dates for application of insecticides and signalling them to growers.
They may be also useful in predicting the risk of injury to shoots and fruits.

XIV International Symposium on Apricot Breeding and Culture

L. Ivanova, H. Kutinkova, V. Dzhuvinov

mass flight, first flight, population density, generations, signalisation, forecasting

https://doi.org/10.17660/ActaHortic.2010.862.72