20.500.12556/RUL-143398 Straw management and slurry application affect the soil microbial community composition and its activity In low-input farming systems, where plant nutrition strongly depends on either organic matter inputs or nitrogen fixation by legumes, it is crucial to understand the effects of different crop residue management strategies on microbially mediated processes that influence nutrient dynamics. To evaluate different straw management options, we conducted a pot experiment with the following treatments: (1) control with no straw added (CON), (2) applying straw to the soil surface (SRF), simulating no-till, and (3) straw incorporating straw to the top 10 cm (INC), simulating minimum tillage. Another factor was slurry fertilization (with 3.2 t d.m. ha$^{-1}$ or without). Throughout the experiment, CO$_2$ efflux ([mu]mol/m$^2$/s) was measured regularly over a period of four months. Soil sampling was performed to monitor the abundance of the total bacterial, crenarchaeal and fungal communities, as well as nitrogen cycle microbial guilds and the dynamics of labile N and C fractions in the soils at different depths. Among straw treatments, significantly higher soil respiration was observed in INC and SRF compared to CON. Slurry fertilization increased soil respiration in all straw treatments. In the top 10 cm soil layer, the fungal abundance increased in INC compared to SRF and CON, whereas bacteria and crenarchaea did not respond. This effect was even more pronounced with slurry addition. The slurry also stimulated the abundance of certain N-cycle guilds, with the greatest increase in bacterial amoA-bearing nitrifiers and nirS, nosZI and nozII-bearing denitrifiers, particularly in the uppermost 0–1 cm soil layer. Straw treatment effects on N-cycle microbial guilds were less pronounced, while the coupled effect of straw incorporation and slurry was beneficial mostly for nosZ, again mainly in the top 1 cm soil layer. Compared to straw management, slurry fertilization had more potent effects on the abundance and performance of the investigated microbial communities. soil respiration plant residuals no-till conservation tillage ammonia oxidizers denitrifiers functional groups nitrogen cycle biologija tal dihanje tal rastlinski ostanki ohranitvena obdelava tal denitrifikacija dušikov cikel slama true false true Angleški jezik Slovenski jezik Članek v reviji 2022-12-19 10:29:50 2022-12-19 10:29:54 2022-12-20 03:27:48 0000-00-00 00:00:00 2022 0 0 19 str. iss. 11, art. 2781 Vol. 12 2022 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 631.4 2073-4395 10.3390/ agronomy12112781 134456067 Pintaric_et_al_2022-Straw_Management_and_Slurry_Application_Affect_the_Soil_Microbial_Community_Composition_and_Its_Activity.pdf Pintaric_et_al_2022-Straw_Management_and_Slurry_Application_Affect_the_Soil_Microbial_Community_Composition_and_Its_Activity.pdf 1 5BE2A17DCD8339A9E6D58B5A851565EE 67ae7ea81faa73c130768e76b4271a87dfd1844dd20366a53be5fac63b52a8fe 11641ef4-7f80-11ed-9c94-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=165052 https://www.mdpi.com/2073-4395/12/11/2781 1 83767031-7f7f-11ed-9c94-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=165051 Biotehniška fakulteta 0 0 0