Nine ecological fertilizer combinations effects on the field response of Aronia melanocarpa (Michx.) Elliot, 'Melrom' cultivar was studied. Plants vegetative growth, crop yield, and some fruit quality parameters during a two years experiment (2019 – 2020) performed at the Research Institute for Fruit Growing Pitesti, Arges County, Romania were assessed. The experimental factors studied were A, ... [Show full abstract] three different doses of the organic soil fertilizer, Biohumus, and B, the organic foliar treatments in three replication. On average, on the three graduations of factor B (no fertilizer, Algacifo, Macys foliar fertilizer), the application of 0.3 l of Biohumus fertilizer per plant, compared to the application of the same fertilizer, at a dose of 0.4 l per plant, determined a significant increase with 0.1085 m3 (11.88%) of the aerial part of the plant. Under the same conditions, the application of 0.2 l Biohumus per plant, compared to the application of 0.3 l Biohumus per plant, determined a distinctly significant increase, by 0.095 g (11.02%), of the average fruit weight, and at the application of 0.3 l per plant, compared to the application of 0.4 l per plant, from the same product, there was a significant decrease, by 0.090 g (10.97%), of the average fruit weight. Also, the application of higher doses of Biohumus fertilizer (0.3-0.4 l per plant), compared to the variant where only 0.2 l per plant was applied, resulted in a significant and distinctly significant reduction in fruit firmness and values of the fruit juice pH.