Tillage intensity shapes soil carbon stabilization pathways differently in contrasting soil textures : 11-year field experiments

Mavsar, Sara (avtor), Grčman, Helena (avtor), Mihelič, Rok (avtor)

Soil texture-dependent responses and time-scales of soil quality change, especially soil carbon, remain poorly understood. We addressed this gap using a dual time-scale design of long-term field experiments: 11 years of minimum (MT) versus ploughing tillage (CT), both followed by 5-year transitions to no-till (NT) in contrasting textures (loamy vs. silty clay) in NE Slovenia. In loamy soils, reduced tillage in the 0–10 cm layer increased soil organic carbon by 40–48%, dissolved organic carbon by 36–64%, permanganate oxidizable carbon by 67–84%, particulate organic carbon by 76–95%, and mineral-associated organic carbon (MAOC < 50 μm) by 28–34%. In silty clay soils, high clay content masked tillage effects, though labile pools showed stratification. MAOC < 20 μm remained stable across treatments and textures (2.0–2.5%), except under CT in loamy soil (1.73%), indicating enhanced decomposition. In loamy soils CT increased by 0.5–1 and 1–2 mm and decreased >20 mm and in silty clay soils increased <0.5, 1–2 and 2–4 mm aggregate formations. The MWD, GMD, Dm indices correlated strongly with C fractions, confirming physical protection mechanisms. Our dual time-scale approach reveals labile C pools and aggregate recovery respond within 5 years of NT, while texture modulates response magnitude and detectability.

• Jezik: Angleški jezik
• Ključne besede: no-till transition, long-term field experiments, NE Slovenia, organic carbon stabilization, structure stability, aggregation, soil texture
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: BF - Biotehniška fakulteta
• Status publikacije: Objavljeno
• Različica publikacije: Objavljena publikacija
• Leto izida: 2026
• Št. strani: 21 str.
• Številčenje: Vol. 10, iss. 3, art. 35
• PID: 20.500.12556/RUL-179990
• UDK: 631.4
• ISSN pri članku: 2571-8789
• DOI: 10.3390/soilsystems10030035
• COBISS.SI-ID: 269901059
• Datum objave v RUL: 27.02.2026

Gradivo je del revije

• Naslov: Soil systems
• Skrajšan naslov: Soil syst.
• Založnik: MDPI
• ISSN: 2571-8789
• COBISS.SI-ID: 529825561

Licence

• Licenca: CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
• Povezava: http://creativecommons.org/licenses/by/4.0/deed.sl
• Opis: To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: pedologija, tekstura tal, ohranitvena obdelava tal

Projekti

• Financer: ARIS - Javna agencija za znanstvenoraziskovalno in inovacijsko dejavnost Republike Slovenije
• Program financ.: Young Researcher Program

• Financer: ARIS - Javna agencija za znanstvenoraziskovalno in inovacijsko dejavnost Republike Slovenije
• Številka projekta: P4-0085
• Naslov: Agroekosistemi