Organic matter and isotopic composition of soils under different management systems in western Paraná State, Brazil

Effects of different agricultural systems on organic matter and aggregation of a medium-textured soil in subtropical region

“…Based on the PCA analysis (Figure 5), it was clear how the PP domain stands out from the others. The results confirm the potential that well-managed pastures have to increase quantity (Oliveira et al, 2021;Martins et al, 2020;Santos et al, 2020;Troian et al, 2020;Knicker et al, 2012) and quality (Assunção et al, 2019;Silva et al, 2019a;Rosset et al, 2022) of SOM, as well as promoting soil aggregation (Rosset et al, 2019;Vicente et al, 2019). The PCA results also show the grouping of the NT and NT+B areas with the NF area, indicating that these studied production areas did not induce changes in the evaluated variables compared to the NF area, a pattern already observed by other authors (Medeiros et al, 2022;Ferreira et al, 2020;Gmach et al, 2019).…”

“…The results observed in the PP system are evident in several studies comparing PP and notill systems (Medeiros et al, 2022;Pinto et al, 2022;Falcão et al, 2020;Ferreira et al, 2020;Medeiros et al, 2020;Santos et al, 2020;Wuaden et al, 2020;Ozório et al, 2019;Rosset et al, 2019). No differences were observed in soil aggregation parameters in the NT, NT+B and NF areas, indicating the benefits that the production systems (NT, NT+B) have on the formation of soil aggregates, similar to the NF results.…”

“…Soil quality (SQ) is fundamental to maintaining sustainable agricultural systems that meet global food, fiber, and energy needs (Damian et al, 2023). In recent decades, SQ has been discussed by the scientific community worldwide (Simon et al, 2022;Thomaz and Antoneli 2022;Valani et al, 2022;Burak et al, 2022;Pinto et al, 2022) and defined as the ability of a particular soil type to function within the limits of the natural or managed ecosystem to maintain crop productivity (Valani et al, 2022). Given the demand for food to feed the world's population, human activities are causing changes in natural ecosystems (Fao, 2006).…”