2025 https://unilib.phaidrabg.rs/o:7697 cobiss:142629121 ISBN: 978-99976-84-03-5 info:eu-repo/semantics/conferenceProceedings Book of Abstracts: XIV International Symposium on Agricultural Sciences "AgroReS 2025" 26-29 May 2025, Trebinje, Bosnia and Herzegovina startpage: 45 endpage: 45 apple, microbiological fertilizers, macro and microelements, heavy metals Milinković, Mira Paunović, Svetlana M. Buntić, Aneta Knežević, Magdalena Pavlović, Jelena Lazović, Vojislav Vidojević, Dragana All rights reserved eng application/pdf 487760 bytes The Effect of Microbiological Fertilizer Application on the Quality of Apple Fruits Abstract: The influence of the application of microbiological fertilizer on the quality of apple fruits: 'Granny Smith', 'Red Chief', 'Idared', 'Golden Delicious' in the Topola area (Republic of Serbia) was investigated. The uptake of macroelements, microelements and some heavy metals in the fruits of the above apple varieties was monitored. The application of microbiological fertilizers in apple plantations influenced the higher uptake of P, Mg, K in 'Granny Smith', and the content of Ca and Na increased in the fruits of all other tested varieties compared to untreated plantations. Increased uptake of Mn and Fe was also determined, relative to the content of Cu. Compared to previous results, the application of microbiological fertilizers affected the reduction of Pb, Ni, Cr uptake. The ratio of K/Ca and K+Mg/Ca, which affects the preservation of fruit firmness in storage, was significantly more favorable in the treatments of 'Red Chief' and 'Idared'. The application of microbiological fertilizers favorably affected the quality of apple fruits, and the influence of agroecological growing conditions and assortment on the obtained research results was also noticeable.