AI Article Synopsis
- The study compared the effects of conventional tillage (CT) and no-till (NT) agriculture on soil structure and microbiota over 27 years, analyzing two soil depths and different time points after switching tillage practices.
- Results indicated that soil enzymatic activities were significantly higher in NT compared to CT, suggesting that NT improves soil health and enzyme response times were quicker than changes in microbiota structure.
- The findings highlighted that switching to NT can restore prokaryotic diversity and enhance soil health, indicating the importance of agricultural management practices in soil microbiome functionality.
Article Abstract
The effects of tillage on soil structure, physiology and microbiota structure were studied in a long-term field experiment, with side-to-side plots, established to compare effects of conventional tillage (CT) vs no-till (NT) agriculture. After 27 years, part of the field under CT was switched to NT and vice versa. Soil texture, soil enzymatic profiles and the prokaryotic community structure (16S rRNA genes amplicon sequencing) were analyzed at two soil depths (0-5 and 5-10 cm) in samples taken 6, 18 and 30 months after switching tillage practices. Soil enzymatic activities were higher in NT than CT, and enzymatic profiles responded to the changes much earlier than the overall prokaryotic community structure. Beta diversity measurements of the prokaryotic community indicated that the levels of stratification observed in long-term NT soils were already recovered in the new NT soils 30 months after switching from CT to NT. Bacteria and Archaea OTUs that responded to NT were associated with coarse soil fraction, soil organic carbon and C cycle enzymes, while CT responders were related to fine soil fractions and S cycle enzymes. This study showed the potential of managing the soil prokaryotic community and soil health through changes in agricultural management practices.
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| http://dx.doi.org/10.1093/femsec/fiab025 | DOI Listing |
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