USE OF CARPOVIRUSINE FOR CONTROL OF CODLING MOTH, CYDIAPOMONELLA L. (LEPIDOPTERA: TORTRICIDAE), IN BULGARIA PROGRESS REPORT

Abstract

ABSTRACT The trials were carried out in Central-South Bulgaria in 2006 and 2007. In a conventionally managed reference orchard, sixteen chemical treatments were applied during the season. Fifteen of them could act against codling moth larvae. In spite of that, fruit damage by CM reached at harvest 6.8 in 2006 and 18.7 in 2007. At the same time damage in the plot, treated twelve times with GpGV, was only 0.05% in 2006 and 0.4% in 2007. The overwintering population in the plot treated with GpGV was 0.125 larvae per tree in autumn 2006 and 0.175 larvae per tree in 2007, whereas in the reference orchard 3.32 larvae per tree in autumn 2006 and 7.97 in 2007. The high fruit damage and overwintering CM indicate the population to be resistant tothe organophosphates used. Positive results obtained with Carpovirusine show that it may be effective as a means of biocontrol of CM in Bulgaria.