Haplic Chernozem Properties as Affected by Different Tillage Systems

Abstract

Abstract. Isolation of humic acids was made according to IHSS standard method using spectrometer Shimadzu 8700. Aggregates stability was determined by wet sieving method. Results showed that macrostructure stability was directly connected with time of sampling and content and quality of humic substances. A er fi ve years of experiment statistically signifi cant diff erences in humic substances content were found. The highest structure stability, quantity and quality of humic substances were achieved under reduced tillage with shallow harrowing.

Determination of the influence of biostimulants on soil properties and field crop yields

“…In recent years, a lack of precipitation has been the restraining factor in plant growth, yields, and in the subsequent decomposition of crop residues in the soil (Katerji et al, 2004;Von Lützow et al, 2006;Peña-Gallardo et al, 2019;Mitchell-Forsytk et al, 2021;Wolny-Koładka et al, 2022). Disturbances such as these cause a deterioration in the physical properties of the soil through a lack of soil organic matter and also result in the degradation of the soil structure which is induced by compaction (Nimmo, 2013;Hábová et al, 2016). Damage to the soil structure leads to a decline in all of the beneficial soil characteristics which has a negative impact on agricultural machinery and crop yields (Vopravil et al, 2010;Farhadi-Machekposhti et al, 2020).…”