In 2012, in the Fruit growing center Bilje fourteen new cultivars of flat peaches and one cultivar of flat nectarine (yellow-fleshed flat peaches: ‘Plane Gem’, ‘Plane Sun’, ‘Plane Top’, ‘Plane Gold’, ‘Ornella’, ‘Oriane’, ‘Ordigan’; white-fleshed flat peaches: ‘UFO 3’, ‘UFO 4’, ‘Platifirst’, ‘Platicarpa Bianca’, ‘Platibell’, ‘Platifun’, ‘Early Sandwich’ and a yellow-fleshed flat nectarine ‘Platimoon’) were planted. The purpose of the experiment was to tested pomological characteristics of new cultivars flat peaches and nectarine. In 2015 we observed flowering and maturity time, yield per tree and fruit dimensions. The pomological characteristics of fruit were evaluated as well. The maximum number of fruit per tree (179.3), the largest average yield per tree (14.6 kg) and highest yield per hectare had the cultivar ‘Plane Gold’. The lowest yield per hectare had the cultivars ‘Ordigan’ (2.6 t/ha), ‘Early Sandwich’ (3.2 t/ha) and ‘Platifirst’(3.6 t/ha). Cultivar ‘Plane Gem’ had great yield and lowest fruit weight (156.6 g). The smallest fruit and highest firmness had cultivar ‘Early Sandwich’ (7.84 kg/cm2). The best value of the fruit was given to cultivars ‘Oriane’, ‘UFO 3’ and ‘Platibell’. For further growing in Slovenian pedological and climatic conditions we recommend most of the cultivars. Other cultivars which had the bad results should be followed in the future (‘Plane Gem’, ‘Plane Top’, ‘Plane Sun’ and ‘Platifirst’).
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