Abstract
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, 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.
Highlights
Aronia melanocarpa (Michx.) Elliot belonging to the subfamily Maloideae of the Rosaceae family, is a perennial shrub, native to eastern North America and Canada
The purpose of this study was to investigate the effect of organic soil Biohumus different dozes and foliar fertilization with Algacifo and Macys products on vegetative growth, yield, and fruit quality of Aronia melanocarpaMelromcultivar
All the Aronia shrubs included in the experiment went through the phenological stages without a significant difference between fertilization treatments
Summary
Aronia melanocarpa (Michx.) Elliot (black chokeberry) belonging to the subfamily Maloideae of the Rosaceae family, is a perennial shrub, native to eastern North America and Canada. Interest in Aronia commercial cultivation appeared initially in Russia (around 1900) and spread in Europe (the mid1950s). It produces berry-type (false) fruits, smooth, spherical, 6–15 mm in diameter, with an average mass of 0.8–1.5 g, black or black-purple, covered with a thin protective layer of wax, have a dense, juicy, sweet pulp, with an astringent shade. The nutritive and non-nutritive compounds concentration differs between species (Vinogradova et al, 2018) and cultivars (Ochmian et al, 2012; Wangensteen et al, 2014), from Aronia genus fruits, from one to another location (Hwang and Thi, 2016), depending on soil type (Djuric et al, 2015; Won et al, 2018), climatic factors (Sim, et al, 2017), depending on the fruit ripening stage (Jeppsson, and Johansson, 2000; Yang et al, 2019) and it changed under the agrotechnical management applied to the crop
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