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Soil organic carbon, aggregation and fungi community after 44 years of no-till and cropping systems in the Central Great Plains, USA

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Abstract

Implementing sustainable agricultural land management practices such as no-till (NT) and diversified crops are important for maintaining soil health properties. This study focuses on the soil health of three long-term (44 years) tillage systems, NT, reduced tillage (RT), and conventional tillage (CT), in monoculture winter wheat–fallow (W-F) (Triticum aestivum L.) and wheat–soybean (W-S) (Glycine max (L.) Merrill) rotation. Soil organic carbon (C) was higher in NT than CT in the surface 0–5 cm, but not different in the 5–15 cm, demonstrating SOC stratification on the soil profile. The soil water content was higher in NT followed by RT and CT in the top 0–5 cm. We found an association between increased carbon, aggregation, and AMF biomass. Greater soil aggregation, carbon and AMF were observed in NT at 0–5 cm soil depth. The W-S cropping system had greater soil microbial community composition based on fungi biomass, AMF and fungal to bacteria ratio from phospholipid fatty acid analysis (PLFA). Large macroaggregates were positively correlated with total C and N, microbial biomass, Gram + , and AMF. Soil water content was positively correlated with macroaggregates, total C and N, and AC. No-till increased soil carbon content even after 44 years of cultivation. By implementing conservation tillage systems and diversified crop rotation, soil quality can be improved through greater soil organic C, water content, greater soil structure, and higher AMF biomass than CT practice in the Central Great Plains.

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The datasets generated during the current study are available from the corresponding author on reasonable request.

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Acknowledgements

This study received support from the USDA-NIFA’s research grants (Project No. 2019–68012-29888), and US National Science Foundation (Award No. 1656006).

Funding

This study received support from the USDA-NIFA’s research grants (Project No. 2019–68012-29888), and US National Science Foundation (Award No. 1656006).

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All authors contributed to the study conception, material preparation, data collection and analysis.

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Correspondence to Marcos V. M. Sarto.

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The authors have no relevant financial or non-financial interests to disclose.

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Communicated by Erko Stackebrandt.

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Lin, J.S., Sarto, M.V.M., Carter, T.L. et al. Soil organic carbon, aggregation and fungi community after 44 years of no-till and cropping systems in the Central Great Plains, USA. Arch Microbiol 205, 84 (2023). https://doi.org/10.1007/s00203-023-03421-2

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  • DOI: https://doi.org/10.1007/s00203-023-03421-2

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