BOOK OF ABSTRACTS 195 IHSS&IWA26 / BRNO / CZECHIA / 23–28 August 2026 Hall A Poster Session / Soil Organic Matter, Caustobiolites, and Biochar P2.4 Soil and Military Operations – Basic Data from Ukraine Miloslav Pekař1, Vojtěch Enev1, Michal Kalina1, Martina Klučáková1, Liudmyla Vasylenko2, Yuliya Chornoivan2, Mykhailo Ksenofontov2 1 Brno University of Technology, Faculty of Chemistry, Purkyňova 118, 612 00 Brno, Czech Republic, pekar@fch.vut.cz 2 Association „Association of Innovation Laboratories, M. Lukasha Street, building 4-B, suite 1, Lviv region, Lviv, 79026, Ukraine ailaboratories2022@gmail.com Various areas of our planet suffered or suffer from military operations. Besides immediately seen impacts also less visible threats of affected sites in actual and future time are formed. As an example, soil and its potential damage can be given. Determining the actual state of war-affected agricultural lands is important for society to understand the potential for their further use in producing environmentally safe food products not only in current state but particularly in post-conflict era. Such case now exists even in Europe, in Ukraine. As a result of hostilities in Ukraine in recent years, a significant part of agricultural land has suffered. This complicates the fulfilment of Ukraine‘s international obligations regarding the export of agricultural products and exacerbates the food problem in the world. Therefore, the determination of the state of agricultural land affected by hostilities is urgently needed. A join Czech-Ukrainian project started in 2024 (see acknowledgement) aimed also at collecting first data on Ukrainian soil affected by military operations. The project is limited to 15 soil samples and only basic analyses to get at least initial data for further decision making. The Ukrainian partner analysed textural features of soil samples using a robotic equipment. The Czech partner focused on the basic characterization of the soil organic matter. This was addressed by infrared spectroscopy and thermogravimetry of whole soil samples and by the determination of the content of oxidizable carbon using Czech standard for the monitoring of agricultural soils. Further, the ratio of humic to fulvic acids (by wet oxidation) was determined. Finally, the quality of soil organic matter was investigated by respirometry (OxiTop equipment by WTW) using the technique developed by Kolář´s group [1, 2]. Data were compared with data obtained during the long-term monitoring program of agricultural soils in the Czech Republic. Results of chemical analysis showed that soil organic matter seems not to be affected by military activities. Data obtained from the samples did not show any significant deflection from expected values and were comparable with average data obtained in the long-term
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