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Title: Vpliv talnega gnojenja z organskimi in mineralnimi gnojili na prehranjenost, rast in razvoj : poročilo o ciljnoraziskovalnem projektu CRP V4-2216 Authors: ID Fantinič, Jakob (Author) ID Babič, Rok (Author) ID Fičur, Katja (Author) ID Šiškovič, Nina (Author) ID Košir, Iztok Jože (Author) ID Kozlovič, Gašper (Author) ID Volk, Saša (Author) ID Bučar-Miklavčič, Milena (Author) ID Podgornik, Maja (Author) Files: PDF - Presentation file, download (5,77 MB) MD5: 7225DD48D3045D30F2FB2D479B1A0F0C   URL - Source URL, visit https://www.zrs-kp.si/publikacija/vpliv-talnega-gnojenja/   Language: Slovenian Typology: 2.12 - Final Research Report Organization: ZRS Koper - Science and Research Centre Koper Abstract: V literaturi je malo podatkov o primerjalnih učinkih enake uporabe dušika z različnimi gnojili na rast in pridelek. Za oceno učinkov različnih dušikovih gnojil (mineralno gnojilo (MG), organsko-mineralno gnojilo (OMG) in organsko gnojilo – kozji gnoj, vdelan v tla (OG)) na rast, cvetenje in razvoj plodov oljk v zmernem sredozemskem podnebju je bil v oljčnem nasadu sorte ‘Maurino’ izveden petletni poljski poskus. Rezultati so pokazali, da nizka vsebnost fosforja in kalija v OMG v primerjavi z MG ni pomembno vplivala na rast in pridelek oljk, saj med oljkami, gnojenimi z enim ali drugim gnojilom, ni bilo bistvenih razlik. Vnos kozjega gnoja v tla brez dodatka drugih gnojil je povzročil manjše število plodov in manjšo rast oljk v primerjavi z drugimi gnojili, vendar so bili pridelki v vseh letih bolj enakomerni. Zato bi lahko kozji gnoj, vdelan v tla, predstavljal alternativo konvencionalnim metodam gnojenja v regijah z zmernim sredozemskim podnebjem. Primerjalna analiza laboratorijskih in NIR-meritev za oceno vsebnosti hranil v oljčnih listih je pokazala najboljše ujemanje pri dušiku (R² = 0,78), kar potrjuje potencial NIR-metode za hitro in stroškovno učinkovito spremljanje prehranjenosti oljk. Keywords: oljke, oljčniki, gnojenje, gnojila, organska gnojila, mineralna gnojila, rast oljk, prehranjenost oljk Publication status: Published Publication version: Version of Record Publication date: 24.03.2026 Place of publishing: Koper Place of performance: Koper Publisher: Annales ZRS Year of publishing: 2026 Year of performance: 2026 Number of pages: 1 spletni vir (1 datoteka PDF (28 str.)) PID: 20.500.12556/DiRROS-28563  ISBN: 978-961-7276-08-4 UDC: 633.852.73 DOI: 10.35469/978-961-7276-08-4  COBISS.SI-ID: 272408067  Copyright: Znanstveno-raziskovalno središče Koper Note: Nasl. z nasl. zaslona; Opis vira z dne 24. 3. 2026; Publication date in DiRROS: 24.03.2026 Views: 172 Downloads: 116 Metadata:    Cite this work Plain text BibTeX EndNote XML EndNote/Refer RIS ABNT ACM Ref AMA APA Chicago 17th Author-Date Harvard IEEE ISO 690 MLA Vancouver : Copy citation

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Document is financed by a project

Funder:	ARIS - Slovenian Research and Innovation Agency
Project number:	V4-2216
Name:	Ohranjanje in izboljšanje proizvodnega potenciala tal za trajnostno pridelavo oljk (GO-TO S-OIL)

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License:	CC BY-NC-ND 4.0, Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
Link:	http://creativecommons.org/licenses/by-nc-nd/4.0/
Description:	The most restrictive Creative Commons license. This only allows people to download and share the work for no commercial gain and for no other purposes.
Licensing start date:	24.03.2026

Secondary language

Language:

English

Abstract:

The European Union has set a target to reduce nutrient losses by at least 50% while maintaining soil fer lity. By 2030, fer liser use is to be reduced by at least 20%, with full implementa on of environmental and climate regula ons. The EU's Green Deal also aims for at least 25% of agricultural land in the EU to be under organic farming by 2030. Given that about 50% of the world's popula on depends on agricultural products produced with mineral fer lisers, and that the widespread use of mineral fer lisers in the past was due to their cost-effec veness and easy accessibility, the European fer liser industry now faces a major challenge: developing sustainable fer liser products. Most research has focused on the synergis c effects of combining organic and synthe c fer lisers and on the effects of different fer liser rates on vegeta ve growth, oil quality, and yield. There is li le informa on in the literature on the compara ve effects of uniform nitrogen applica on with different fer lisers on crop growth and yield. To evaluate the effects of different nitrogen fer lisers – mineral fer liser (MG), organo-mineral fer liser (OMG), and organic fer liser (goat manure incorporated into the soil, OG)—on the growth, flowering, and fruit development of olive trees in a temperate Mediterranean climate, a five-year field experiment was conducted in an olive grove planted with the 'Maurino' cul var. The results showed that the lower phosphorus and potassium content of OMG compared to MG had no significant effect on olive tree growth and yield, as there were no significant differences between olive trees fer lised with either product. Incorpora ng goat manure into the soil without adding other fer lisers resulted in fewer fruits and reduced growth of olive trees compared to the other fer lisers, but more uniform yields were observed over the years. Consequently, goat manure incorporated into the soil could be a viable alterna ve to conven onal fer lisa on methods in regions with temperate Mediterranean climates. A compara ve analysis of laboratory measurements and measurements with a NIR spectrometer to assess the mineral content in olive leaves showed the best correla on for nitrogen (R² = 0.78), confirming the poten al of the NIR method for rapid and cost-effec ve monitoring of olive nutri on.

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