Which soil tillage is better in terms of the soil organic matter and soil structure changes?

Abstract

This study was performed to evaluate effects of minimum (MT) and conventional tillage (CT) on soil organic matter and soil structure in haplic Chernozems and mollic Fluvisols. The content of soil organic carbon (C org ) as well as parameters of stability and vulnerability of soil structure were quantified. The results showed that soil type had statistically significant influence on C org . In haplic Chernozems the C org content near the surface (0-0.1 m) was significantly higher under MT (by 6%) compared to CT, however, in layer 0-0.3 m under CT the average C org content was by 16% higher than under MT. In mollic Fulvisols under MT, the average C org content (17.5 ± 5.4 g*kg -1 ) was significantly less for the 0-0.3 m layer than the CT (22.7 ± 0.4 g*kg -1). In Chernozems, total content of water-stable micro-aggregates (WSA mi ) was higher in MT (90.8%) than in CT (69.5%). In mollic Fluvisols, the average content of WSA mi was higher in CT (62.5%) than in MT (53.2%). The low aggregate stability and the high structure vulnerability were reflected also due to the high contents of WSA mi in both soils. The stability of aggregates was a higher in mollic Fluvisols than in haplic Chernozems. In haplic Chernozems, better soil structure stability was under CT than MT, on the other hand, in mollic Fluvisols, the average value of coefficient of aggregate stability was lower by 32% in CT than MT. Kľúčové slová: černozem, čiernica, pôdny organický uhlík, spôsoby obrábania, zraniteľnosť a stabilita štruktúry pôdy

Suitability of World Reference Base for Soil Resources (WRB) to describe and classify chernozemic soils in Central Europe

“…2). These single examples correspond well with numerous available characteristics of chernozems in those countries (Hraško 1966;Turski 1985;Skalský et Novák et al 2014Novák et al , 2018aŠimanský et al 2016;Vyslou•ilová et al 2016;Jonczak et al 2017;£abaz et al 2018 and support a common opinion, that chernozems existing under more continental climate are more enriched in humus and less leached compared to chernozems existing under more humid climate; the latter therefore considered a "degraded" variety (Borowiec 1968;Eckmeier et al 2007;Kaba-³a 2019). The differences between chernozems along a transect Hungary -Slovakia -Poland are similar, to some extent, to zonal differentiation of these soils from more southern steppe to more northern foreststeppe zones in European Russia (Afanasyeva 1966;Khitrov et al 2019) or in Ukraine (Pozniak and Havrysh 2019).…”

An improved method for determination of aggregate stability using laser diffraction

“…Soil aggregates and their stabilities play an important role in the soil environment. The literature describes the influence of different natural factors on the processes of aggregate formation (Kumar, Rawat, Singh, Singh, & Rai, ; Lehmann & Rillig, ; Lipiec, Brzezińska, Turski, Szarlip, & Frąc, ), and anthropogenic influences are commonly investigated (Glina et al, ; Makó, Csatári, Barna, Földényi, & Tóth, ; Šimanský, Polláková, Jonczak, & Jankowski, ; Świtoniak, Dąbrowski, & Łyszkiewicz, ). Information about aggregate structure is useful for soil science researchers' activities.…”

Influence of prolonged agrogenic transformation on soil structure and physicochemical properties of Ukrainian Albic Stagnic Luvisols: a case study from western Ukraine

“…Still, others focused primarily on organic matter changes in the context of global CO 2 sequestration and soil fertility (Kaiser and Kalbitz, 2012;Roychowdhury et al, 2013;Haddix et al, 2016;Ovchinnikova, 2016). Some researchers have focused on the study of individual morphological features in the profile and related changes (Adewopo et al, 2014;Šimanský et al, 2016).…”