In order to achieve high crop yields while at the same time cultivating the soil sustainably, there must be a lot of knowledge. It is important to determine when and in what weather conditions work on the field must be done and what tillage tool must be taken, to provide the best tillage management for soil. To take the right tool and make good decisions, we can use soil quality indicators. In the thesis we tested following methods of field soil quality assessment: Spade test, NRCS soil quality assessment method, FAO visual soil assessment, Rainfall simulator, Agregate stability by Sekera, Tea bag index, and Soil mechanical resistance using penetrometer. We compared them descriptively and statisticaly in the two long-term experiments with different soil tillage, (i) in Moškanjci (Traditional plowing vs. Minimal tillage) and (ii) Moškanjci and Pesnica with two different soil types (Traditional plowing vs. Minimal tillage). Our results show that the most useful methods are NRCS method in combination with Sekera test. With using these two methods we get all needed informations about the soil quality easily and fast. Moreover, methods are relatively exact.
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