20.500.12556/DiRROS-31343 Olive pomace-derived compost phytotoxicity assessment and relevance for soil systems Olive pomace (OP) contains phytotoxic compounds that can impair plant growth and soil quality. Composting provides an effective method for detoxifying olive pomace (OP) and improving its suitability for agricultural use. Therefore, this study investigated the phytotoxic effects of raw olive pomace filtrate (OPF) on seed germination in radish (Raphanus sativus L.) and barley (Hordeum vulgare L.), as well as the impact of composted olive pomace (COP) on their growth. Seeds were exposed to OPF at concentrations of 0% (control), 1%, 3%, 5%, 10%, 20%, and 100%. Additionally, three composting treatments were evaluated: R1 (control: OP + barley straw), R2 (OP + barley straw + urea), and R3 (OP + barley straw + sheep litter). Results showed that OPF at concentrations of 10%, 20%, and 100% significantly reduced seed germination, with complete inhibition at concentrations > 10%. The COP treatments showed different physicochemical properties, such as R2 exhibiting better nutrient availability (C/N = 19, oil content = 0.04%). R3 had the highest concentrations of K (40,430.2 mg/kg) and P (6022.68 mg/kg). Results also indicated that R1 significantly reduced radish dry biomass production compared to barley, although R2 performed slightly better than R1 and R3. The findings highlight the need for proper compost stabilization to minimize the phytotoxicity and improve the agricultural potential of COP for improving soil health. agricultural potential compost stabilization olive pomace filtrate kompost stabilizacija filtrat oljčnih tropin true false true MDPI Švica Angleški jezik Slovenski jezik © 2025 by the authors. Neznano 2026-07-29 09:17:30 2026-07-29 09:17:30 2026-07-30 03:49:45 0000-00-00 00:00:00 2025 0 0 Nasl. z nasl. zaslona; Opis vira z dne 24. 7. 2026; Soavtorji iz Slovenije: David Heath, Tomaž Rijavec, Aleš Lapanje, and Marko Černe; 1-18 str. iss. 4 Vol. 9 Sep. 2025 0000-00-00 Zaloznikova Objavljeno NiDoloceno 2025-08-06 2025-09-29 2025-09-30 631.58 2571-8789 10.3390/soilsystems9040107 285934851 https://www.mdpi.com/2571-8789/9/4/107 1 91425651-8b1d-11f1-923b-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=48482 RAZ_Javed_Qaiser_2025.pdf RAZ_Javed_Qaiser_2025.pdf 1 829B587987B82B16274ED5ED753FB093 5a1dd381c65a1641ddaa8919781a3c2a52292acedd0d6096dbffc47fc00dc749 fd30e1c8-8b1f-11f1-923b-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=48483 Institut Jožef Stefan 0 0 0