All rights reserved eng 2026 application/pdf 776341 bytes Jovković, Marina Pavlović, Jelena Tomić, Jelena Milinković, Mira Ilić, Radmila Bošković-Rakočević, Ljiljana Stanojković-Sebić, Aleksandra Glišić, Ivan Mašković, Jelena Paunović, Gorica Abstract: This study was conducted over a four–year period (2019–2022) in an experimental red currant (Ribes rubrum L.) orchard to examine the effect of organic fertilization on the contents of macroelements (C, N, P, K, Ca, Mg, S) and microelements (Fe, Mn, Cu, Zn, B) in the leaves and fruits. Two organic fertilizers were applied: well–decomposed cattle manure (CM) at 60 t ha⁻¹, and pelletized poultry manure (PPM, ‘Italpollina’, NPK 4:4:4) at 1.6 t ha⁻¹. The study evaluated nutrient balance using the Deviation from Optimum Percentage (DOP) index in two cultivars, ‘Rolan’ and ‘Jonkheer van Tets’. In 2021, no differences in balance of macronutrient were observed between cultivars; however, in 2022, ‘Rolan’ exhibited a higher imbalance than ‘Jonkheer van Tets’. ‘Rolan’ showed greater imbalance for micronutrients in 2021, whereas in 2022 the opposite trend was recorded, with ‘Jonkheer van Tets’ showing higher ΣDOP values. Fertilization treatment affected nutrient balance, with CM causing the highest macro- and micronutrient nutrient differences in 2022, while PPM promoted a more moderate and stable nutrient status. The greatest differences were observed in the R–CM treatment. The findings highlight the importance of selecting appropriate fertilizer to maintain nutrient balance and optimize red currant cultivation. info:eu-repo/semantics/article https://unilib.phaidrabg.rs/o:9886 doi:10.15835/nbha54215158 Notulae Botanicae Horti Agrobotanici Cluj-Napoca cattle manure; macroelements; microelements; organic fertilization; pelletized poultry manure; red currant Effect of Organic Fertilization on Macro– and Microelement Contents in Leaves and Fruits of Red Currant (Ribes rubrum L.)