The Effect of Aminoethoxyvinylglycine (AVG) on Pre-harvest Fruit Drop and Fruit Quality in Red Chief and Braeburn Apple Cultivars

The study was carried out in 2017 the semi-dwarf apple orchard established 2010 Kemalpaşa village Tokat province order to determine effect of AVG application different concentrations on pre-harvest fruit drop and quality Red Chief Braeburn cultivars. In study, 7 years-old trees cultivars grafted MM106 rootstock were used. AVG, at 0, 75, 150 225 mg L-1 combined with a Regulaid’ surfactant 0.1% v/v, applied before anticipated harvest. Fruit ratio, which varied depending cultivar, lower treated trees, concentration significant. effective maintaining retention force. significant differences force occurred between concentrations. It determined that higher fruits belonging Breaburn cultivar. size, SSC pH acidity rates variety. There no firmness starch index increased decreased amount both As result, this it has been revealed can be used effectively preventing Redchief ve Braeburn.