Published in Scientific Papers. Series B, Horticulture, Vol. LXVI, Issue 1
Written by Mihaela CIUCU PARASCHIV, Dorel HOZA
To evaluate the effect of some organic or chemical fertilizers on the nutritional and productive parameters of blueberries (Vaccinium corymbosum L.), an experiment was carried out on a farm in the Argeș meadow in a loam-clay soil with four blueberry varieties: 'Duke', 'Blueray', 'Hannah’s Choice' and 'Elliott'. Treatments with two foliar organic fertilizers were applied: Algacifo 3000 (2 L/ha) and ERT 23 Plus (1 L/ha) and one conventional treatment: Poly-Feed 19-19-19 + ME (10 kg/ha) along with a control treatment without fertilization in the years 2020-2021 in a four-year blueberry plantation. Results indicate that the nitrogen or phosphorus content of the leaves and fruits was significantly influenced by the variety and fertilization options. The highest concentration of nitrogen and phosphorus in leaves and fruits was recorded in 'Blueray' variety, the variant fertilized with Poly-Feed 19-19-19 + ME. The potassium content showed significant differences between varieties and variants of leaf fertilization. Finally, the chemical fertilizer obtained the highest values for most of the evaluated parameters in all the blueberry varieties studied.
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