All rights reserved application/pdf 8405131 bytes Marković, Danica Marković, Ljubisav UTICAJ FERTILIZACIJE NA PRIRAST BILJAKA OBIČNE SMRČE (Picea abies Karst.) I SADRŽAJ ELEMENATA NPK U NJIHOVIM ČETINAMA INFLUENCE OF FERTILIZATION ON HEIGHT INCREMENT OF SPRUCE PLANTS AND N, P, K CONTENT IN NEEDLES info:eu-repo/semantics/article 1989 srp In a seven-year old ,plantation of spruce (Picea abies K a r s t.) fertilization of young plants was made with different doses of mineral NPK manure in the following combinations: N1,P1,K, N2,P1,K, N2,P2,K and N3P3K. Doses of Nitrogen: N1 = 300 kg N2 = 600 kg N3 = 900 kg of Nitromonkal\ha Doses of Phosphorus: P1 = 400 kg P2 = 600 kg P3= 800 kg of granulated Superphosphate/ha Dosis of Potassium: K = 200 kg of 40:% Potassium salt/ha The experiment lasted eight years and the manuring was done each second yeair. The unmanured plants, with loosened or unloosened soil around, were used as a control. The mean values of the annual height increment of manured plants were significantly higher from 38.6 to 61.7% when compared with controlled plants. Also the content of N, P2O5 and K2O was the smallest one in the needles of controlled plants. Institut za šumarstvo Zbornik radova Instituta za šumarstvo startpage: 49 endpage: 58 https://unilib.phaidrabg.rs/o:7070 ISSN: 0351-9147