o:3726 Changes in Mn availability and soil acidity in Albic Retisol limed with dolomite screenings of various sizes and doses: A long-term microfield experiment in the north-western Russia en Abstract: Liming of acidic soils is associated with various processes in the soil, including the availability of nutrients for plants. The vector and extent of these changes depend, inter alia, on the type of lime material and the doses used. Particularly, excessive liming can trigger a deficiency of manganese for crops. A long-term microfield experiment (13 test years) was carried out on Albic Retisols reclaimed with the dolomite particles of various sizes as a by-product of stone processing quarries. Ten treatments including various sized dolomite particles and their combinations, as well as traditional limestone flour on the background of NPK fertilizer were studied for the changes in soil acidity indicators (exchangeable acidity, pH; hydrolytic acidity, Hy; total acidity, Htot) and manganese availability. The amount of acidic components passing into the extract of 1N KCl was insufficient to reveal a dependency between the exchangeable acidity and the content of mobile manganese in the soil of most treatments limed with dolomite particles of various sizes. However, the relationship between the content of mobile Mn in soils and the value of hydrolytic acidity was proved by paired linear regressions. Regardless of the dose and size of dolomite particles added, the soil was highly and moderately supplied with plant available manganese during the entire study period. Retisol, dolomite screenings, manganese, hydrolytic acidity, dependency 1552099 10.21638/ spbu03.2023.301 2024-01-12T11:40:29.692Z 44 no 46 Andrey Litvinovich 46 Anton Lavrishchev 46 Vladimir Bure 46 Vladimir Miladinović 0000-0001-7394-0173 46 Elmira Saljnikov Institute of Soil Science 0000-0002-6497-2066 application/pdf 593570 https://unilib.phaidrabg.rs/o:3726 no yes 1 70 92000001 71A05 Biological Communications 2023