Biofertilization effect on growth, yield and fruit quality of apple cv Topaz

The experiment was carried out from the beginning of spring in 2014 in pots near the greenhouse of Research Institute of Horticulture in Skierniewice, Poland, on maiden apple trees cv. ‘Topaz ’. In May 2014, chemical fertilization (NPK) and various bioproducts: Fertigo, Micosat, Humus UP, Humus Active + Aktywit PM, Aktywit PM, BioFeed Quality, BioFeed Amin, Vinassa, Florovit Natura and Florovit Eko alone or with Pantoea sp., Pseudomonasfluorescens, Klebsiella oxytoca and Rhizobium sp. bacteria were applied to evaluate their effect on growth, yield and fruit quality. Fruit weight was markedly enhanced with Humus Active + Aktywit PM and Humus UP supplemented with beneficial bacteria, and by Humus UP and Biofeed Amin treatments, compared to control.