Published in Scientific Papers. Series B, Horticulture, Volume LIX
Written by Hristo DZHUGALOV, Valentin LICHEV, Anton YORDANOV, Pantaley KAYMAKANOV, Velmira DIMITROVA, Georgi KUTORANOV
The study was conducted during the period 2013 - 2014 at the experimental field of the Department of Fruit Growing atAgricultural University – Plovdiv, Bulgaria. In vitro propagated plants of two Bulgarian cultivars ('JB 1’ and 'JB 2’)were planted in 20 June 2013 at distances of 3 x 2 m. The plants were grown under drip irrigation. The plants wereformed as trees with 40 cm trunk height. Despite of late planting in the permanent place the plants of both cultivarsstarted to bloom and bear fruits (although single fruits) in the same year. During the second vegetation flowering oftested cultivars started in the beginning of June and finished in the end of November. Better productivity was recordedin cultivar 'JB 1’ with 0,56 kg/tree and theoretical yield per decare – 93,52 kg whereas the yield of cultivar 'JB 2’ was0,31 kg/tree and 51,77 kg respectively. The cultivar 'JB 2’ was more susceptible to powdery mildew than 'JB 1’.
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