IHSS&IWA26 / BRNO / CZECHIA / 23–28 August 2026 BOOK OF ABSTRACTS 248 Poster Session / Environment, Agriculture, and Forestry Hall A in sandy soils are often weaker, less persistent, or more dependent on organic matter quality than the corresponding increases in carbon and nutrient status [3–5]. At the same time, several caveats emerged from the Zambian dataset. Older impacted fields (B) were much closer to nonimpacted controls for most key variables, suggesting that the strongest benefits are short-lived or decline substantially with time after impact. In addition, pH did not improve consistently; older impacted fields were significantly more acidic than non-impacted controls. These patterns suggest that managed grazing in Arenosols should be interpreted primarily as a short-term creator of carbon- and water-related soil hotspots, rather than as a uniformly persistent improvement across all physicochemical properties. Overall, the findings support managed grazing as a promising lowinput tool for enhancing carbon storage and plant-available water in sandy agroecosystems, while highlighting that the persistence of these effects and their longer-term consequences for soil acidity and carbon stabilization require further evaluation under repeated cropping cycles and longer post-impact intervals [1,3–5]. References 1. M. Momberg, A. J. Haw, P. Rajah, J. van Rooyen, H. -J. Hawkins, African Journal of Range & Forage Science. 40 (2023) 32–46. 2. L. M. Porensky, K. E. Veblen, Rangeland Ecology & Management. 68 (2015) 131–141. 3. N. Dunjana, P. Nyamugafata, J. Nyamangara, N. Mango, Soil Use and Management. 30 (2014) 579–587. 4. J. Nyamangara, J. Gotosa, S.E. Mpofu, Soil and Tillage Research. 62 (2001) 157–162. 5. P. Mapfumo, F. Mtambanengwe, B. Vanlauwe, Plant and Soil. 296 (2007) 137–150. Acknowledgement This work was founded by Czech AID (Reg. No. ZM-2018-004-DO-31120) and by FFWT MENDELU institutional sources for which the team is very grateful.
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