The effect of application of different nutrition preparations on height increment of walnut (Juglans regia L.) seedlings Uticaj primene različitih preparata ishrane na visinski prirast sadnica oraha (Juglans regia L.) All rights reserved Abstract: Providing of quality planting material which takes root well after planting, resistant to diseases, pests, stress (drought, extreme temperature, etc.) and grows well in cultures is one of the strategic and preferential tasks of modern forestry. Walnut is a fruit tree important as a founder of various varieties and hybrids, and as a rootstock for high-yielding varieties. It is also of great importance because of high nutritional value of fruit and high quality of stem. For that reason this species has to be introduced into the existing ecosystem and used for afforestation of different habitats. The paper presents results of research on the effect of the controlled decomposing fertilizer Osmocote Exact®, mineral NPK fertilizer Florin 2 and microbiological preparation Bactofil® B 10 on height increment of walnut seedlings. Data analysis was performed by relevant procedures using statistical software packages (SPSS Statistics 17.0). Comparative analysis of height increment of seedlings treated with these preparations and height increment of untreated seedlings, as well as a simple way of application of these preparations by adding them to the substrate, will show the justification of direct application of these types of fertilizers and microbiological preparation in mass production of high quality planting material. Abstract: Obezbeđivanje sadnog materijala koji se dobro prima nakon sadnje, otpornog na bolesti, štetočine, stres (suša, ekstremne temperature, i dr.) i dobro raste u kulturama, jedan je od strateških i prioritetnih zadataka savremenog šumarstva. Orah je voćkarica značajna kao rodonačelnik različitih sorti i hibrida i kao podloga za kalemljenje visokorodnih sorti. Takođe je od velikog značaja zbog visoke hranljive vrednosti plodova i visoko kvalitetnog debla. Zato ovu vrstu treba unositi u postojeće ekosisteme i njome pošumljavati različita staništa. U radu će biti prikazani rezultati istraživanja uticaja kontrolisano razlagajućeg đubriva Osmocote Exact®, mineralnog NPK đubriva Florin 2 i mikrobiološkog preparata Bactofil® B 10 na visinski prirast sadnica oraha. Obrada podataka izvršena je odgovarajućim procedurama korišćenjem programskih statističkih paketa (SPSS Statistics 17.0). Komparativna analiza visinskog prirasta sadnica tretiranih ovim preparatima i visinskog prirasta netretiranih sadnica, kao i jednostavan način primene navedenih preparate dodavanjem u supstrat, ukazuje na opravdanost direktne primene ovih tipova đubriva I mikrobiološkog preparata u masovnoj proizvodnji visokokvalitetnog adnog materijala. Key words: walnut, mineral fertilizers, microbiological preparation, height increment. Key words: orah, mineralna đubriva, mikrobiološki preparat, visinski prirast. https://unilib.phaidrabg.rs/o:9536 ISSN: 1821-1046 Beograd: Institut za šumarstvo eng Sustainable forestry volume: 65-66 startpage: 73 endpage: 82 application/pdf 821306 bytes info:eu-repo/semantics/article Ćirković-Mitrović, Tatjana Lučić, Aleksandar Rakonjac, Ljubinko Brašanac-Bosanac, Ljiljana Popović, Vladan 2012