Year: 2026
Type: article
Abstract: This study aimed to develop and experimentally validate an integrated humic organomineral fertiliser based on oxidised lignite, vermicomposted humus and glauconite from Kyrgyz deposits and to evaluate its physicochemical properties and compliance with national standards.A comprehensive physicochemical and mineralogical characterisation of raw materials and the final product was conducted using X-ray diffraction (XRD), X-ray fluorescence (XRF) spectroscopy, inductively coupled plasma spectrometry and thermogravimetric analysis.Oxidised lignite was subjected to alkaline extraction followed by enrichment with vermicompost humus and glauconite concentrate to obtain an integrated organomineral fertiliser.XRD analysis identified up to 65.2% CO₂-associated phases, including 11.2% stichtingite and 9.8% munirite.Glauconite concentrate contained 2.6-5.3%K₂O.The resulting fertiliser contained 27.5% humic acids (dry matter), 73.9% organic matter, 2.2% total N, 2.6% total P₂O₅ and 1.4% total K₂O, exceeding the minimum requirements of GOST R 50335:2022.XRF analysis revealed Ca (34.93%), K (26.85%),Fe (15.84%) and Si (16.29%) as dominant elements.The product complied with regulatory standards and demonstrated a 15-20% increase in plant biomass under practical application conditions.The study was limited to laboratory-scale production without long-term field trials.Unlike previous studies that examined individual humic or mineral components, this study provides the first integrated technological approach combining oxidised lignite, vermicompost humus and glauconite from Kyrgyz deposits with comprehensive physicochemical validation.
Language: English
Subfield: Plant Science
Domain: Life Sciences
Open Access status: hybrid
Estimated APC paid: $161
OpenAlex ID: W7140146283