PECULIARITIES OF GROWTH AND FRUITFULNESS OF APPLE CULTIVARS WITH GENETIC RESISTANCE TO DISEASES GROWN UNDER HIGH DENSITY SYSTEM
Journal: Scientific Papers. Series B. Horticulture (Vol.58, No. 1)Publication Date: 2014-07-01
Authors : Gheorghe PETRE; Daniel Nicolae COMĂNESCU; Valeria PETRE;
Page : 75-79
Keywords : high density system; disease-resistant cultivars; productivity; fruits quality;
Abstract
The researches performed at the Research Station for Fruit Growing Voineúti, in the period 2007-2012, had as object of study 13 disease-resistant apple tree cultivars in a high density system, grafted on M 9 rootstock, respectively: 'Ariwa', 'Golden Lasa', 'Goldrush', 'Enterprise', 'Inedit', 'Iris', 'Luca', 'Real', 'Rebra', 'Redix', 'Remar', 'Saturn', 'Voinicel', comparative with the 'Jonathan' cultivar, considered as control. The trees were planted at a distance of 4 x 1m (2.500 trees/Ha), spindle crown shape. With high production potential remarked the disease-resistant apple cultivars 'Ariwa', 'Remar', 'Inedit' and 'Saturn', which in the years 4 ? 6 after planting realized over 29 t/ha. In the same conditions, the apple tree cultivar 'Real', 'Voinicel', 'Luca' and 'Iris' realized between 23,2 t/ha and 25,5 t/ha. The promotion of the high density apple tree system, in which disease-resistant apple tree cultivars are previewed, represents a modality for periodical and rapid replacement of the assortments, leading to the identification of new modern technologies in obtaining productions adapted to the requirements of the European quality standards.
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