Variation in damage levels by codling moth to ten apple cultivars in an organic orchard in Poland

Authors : WITOLD DANELSKI, DOROTA KRUCZYNSKA, Pawel BIELICKI, ELZBIETA ROZPARA

Pages : 121-126

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Publication Date : 2017-04-01

Article Type : Research Paper

Abstract :This study was conducted in an experimental ecological orchard in central Poland in 2011-2013. The experiment assessed the variation in damage to the fruit of ten apple cultivars by the codling moth Cydia pomonella insert ignore into journalissuearticles values(L.); under an organic system of apple cultivation. The cultivars were divided into two groups according to their susceptibility to apple scab Venturia inaequalis insert ignore into journalissuearticles values(Cooke); Wint. The first group of apple trees insert ignore into journalissuearticles values(A); consisted of cultivars resistant to scab insert ignore into journalissuearticles values(Enterprise, Gold Milenium, Rajka, Rewena, and Topaz);, while the second group insert ignore into journalissuearticles values(B); consisted of cultivars with reduced susceptibility to scab insert ignore into journalissuearticles values(Delbard Jubile, Ligolina, Pinova, Piros, and Szampion);. All of the trees of the evaluated cultivars were protected against the codling moth by applying treatments containing the codling moth granulosis virus insert ignore into journalissuearticles values(CpGV);. Codling moth adults were monitored using pheromone traps during the study period. Each year, an assessment of fruit damage was made for all apple cultivars. The 3-year average percentage of damaged fruit for group A ranged from 1.0% insert ignore into journalissuearticles values(Gold Milenium); to 4.1% insert ignore into journalissuearticles values(Topaz);, and in group B from 1.3% insert ignore into journalissuearticles values(Piros); to 3.3% insert ignore into journalissuearticles values(Pinova);. Overall, the highest percentage of damaged fruit was recorded in 2013.
Keywords : Apple cultivars, organic orchard, fruit damage, Cydia pomonella L, Poland