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The effect of growth stimulants based on humic acids from Ukrainian lignite and biochar from agricultural residues on the growth and development of lettuce (Lactuca sativa)

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dc.contributor.authorZhylina, M.
dc.contributor.authorKarnozhytskyi, P.P.
dc.contributor.authorMiroshnichenko, D.
dc.contributor.authorKonohrai, V.
dc.contributor.authorSterna, V.
dc.contributor.authorOzolins, J.
dc.date.accessioned2025-04-11T06:17:31Z
dc.date.available2025-04-11T06:17:31Z
dc.date.issued2025
dc.descriptionReceived: November 30th, 2024 ; Accepted: March 10th, 2025 ; Published: March 31st, 2025 ; Correspondence: maryna.zhylina@gmail.comeng
dc.description.abstractSignificant amounts of plant-based waste are generated annually in the agricultural and food industries, including straw, corn residues, nutshells, and fruit pits. Disposing of this waste often relies on basic methods that avoid further processing, presenting an urgent environmental challenge. One efficient solution is converting biomass into biochar, which serves as a soil amendment. Developing cost-effective recycling methods has become critical with the increasing scarcity and rising cost of raw materials. The Dnipro Lignite Coal Basin in Ukraine offers extensive lignite reserves, enabling the production of affordable, high-quality humates for soil enhancement. In this study, wheat and barley straw were pelletized with barley bran at a 90:10 ratio. Pyrolysis was conducted at 500 °C with a heating rate of 5 °C·min⁻¹ and a one-hour holding time. The resulting biochar was added to a lettuce cultivation substrate at a 1:10 biochar-to-peat ratio. Humic substances derived from lignite were applied in 3% and 9% aqueous solutions, and environmental conditions, such as humidity and temperature, were monitored throughout the 35-day trial. Results showed that granulated biochar increased lettuce rosette diameter by 7.5% compared to perlite substrates and by 11.6% compared to peat. Additionally, 3% humate solutions enhanced rosette diameter by 11.6% and biomass weight by 25.77%. These findings confirm that biochar from agricultural residues and lignite-derived humates effectively boost lettuce yield and quality.eng
dc.identifier.issn2228-4907
dc.identifier.publicationAgronomy Research, 2025, vol. 23, no. 1, pp. 571–584eng
dc.identifier.urihttp://hdl.handle.net/10492/9577
dc.identifier.urihttps://doi.org/10.15159/ar.25.013
dc.publisherEstonian University of Life Scienceseng
dc.rightsCreative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)eng
dc.rightsinfo:eu-repo/semantics/openAccesseng
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectagro-ecologyeng
dc.subjectbiochareng
dc.subjectbiomasseng
dc.subjectagricultural residueseng
dc.subjectlignite-derived humateseng
dc.subjectsoil qualityeng
dc.subjectLactuca sativalat
dc.subjectgrowth stimulantseng
dc.subjectcarbon cycleeng
dc.subjectcropeng
dc.subjectrenewable resourceseng
dc.subjectarticleseng
dc.titleThe effect of growth stimulants based on humic acids from Ukrainian lignite and biochar from agricultural residues on the growth and development of lettuce (Lactuca sativa)eng
dc.typeArticleeng

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2025, Vol. 23, No. 1