THE INFLUENCE OF ORGANIC FERTILIZATION ON GROWTH AND FRUITING OF SOME APPLE CULTIVARS IN MĂRĂCINENI-ARGEȘ AREA

Research was carried out in an apple field trial established in 2022 at Genetic and Breeding Department of RIFG Pitești-Mărăcineni, Romania. The following determinations were carried out: trees vigour (trunck diameter – mm; crown dimensions – cm; number and lenght of the annual shoots – cm) and yield (kg/tree). As results of the investigations we found that: the highest vigour was obtained at ‘Aura’ (45.50 mm) and ‘Rubinola’ (42.83 mm) cultivars in 3rd fertilization variant (Biohumus – 0,9 l/tree, soil application + Algacifo 3000 – 3 l/ha, foliar application); the best results regarding the fruits yield were also obtained in the 3rd fertilization variant (Biohumus – 0,9 l/tree, soil application + Algacifo 3000 – 3 l/ha, foliar application), among the cultivars being noted the ‘Luna’ cv. with an average fruit yield of 20.18 kg/tree and ‘Rebra’ cv. with 18.49 kg/tree.