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Influence of anthropogenic factors on humus in Phaeozems of Ashotsk land cadastral district

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dc.contributor.authorKroyan, S.Z.
dc.contributor.authorBaghdasaryan, S.K.
dc.contributor.authorMarkosyan, S.A.
dc.contributor.authorKroyan, N.S.
dc.contributor.authorZadayan, M.H.
dc.contributor.authorMarkosyan, A.O.
dc.date.accessioned2026-04-27T07:13:46Z
dc.date.available2026-04-27T07:13:46Z
dc.date.issued2026
dc.descriptionReceived: October 31st, 2025 ; Accepted: April 8th, 2026 ; Published: April 17th, 2026 ; Correspondence: mhzadayan@gmail.comeng
dc.description.abstractThe study was conducted on Phaeozems of the Ashotsk land cadastral region (ALCR), Republic of Armenia. Field investigations compared virgin and long-term cultivated soil variants. Total humus content was determined using the Tyurin method, and the qualitative composition of humus was analyzed according to the Kononova and Belchikova procedure. The results demonstrated that in the plough horizon of cultivated soils, the content and total stock of humic acids, fulvic acids, and non-hydrolyzable residue decreased by 18%, 15.6%, and 17%, respectively. Under prolonged agricultural use, both quantitative and qualitative humus characteristics changed considerably. Compared with virgin soils, total humus content declined by approximately 32%, while humic and fulvic acid fractions decreased by 16–18%. These findings confirm progressive deterioration of humus in cultivated Phaeozems and highlight the necessity of fertility restoration measures. Management practices that may be considered include the application of organic fertilizers (55–65 t ha-1) combined with mineral fertilizers in prescribed doses (N90, P100, K60) and the implementation of minimum or zero tillage within adaptive landscape farming systems.eng
dc.identifier.citationKroyan, S. Z., Baghdasaryan, S. K., Markosyan, S. A., Kroyan, N. S., Zadayan, M. H., & Markosyan, A. O. (2026). Influence of anthropogenic factors on humus in Phaeozems of Ashotsk land cadastral district. Estonian University of Life Sciences. https://doi.org/10.15159/AR.26.020en
dc.identifier.issn2228-4907
dc.identifier.publicationAgronomy Research, 2026, vol. 24, no. 1, pp. 350–361eng
dc.identifier.urihttp://hdl.handle.net/10492/10368
dc.identifier.urihttps://doi.org/10.15159/ar.26.020
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.subjectphaeozemseng
dc.subjecthumuseng
dc.subjecthumic acidseng
dc.subjectfulvic acidseng
dc.subjectnon-hydrolyzable residueeng
dc.subjectarticleseng
dc.titleInfluence of anthropogenic factors on humus in Phaeozems of Ashotsk land cadastral districteng
dc.typeArticleeng

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