Impacts of switching tillage to no-tillage and vice versa on soil structure, enzyme activities and prokaryotic community profiles in Argentinean semi-arid soils
- Gabbarini, Luciano Andres
- Figuerola, Eva Lucia Margarita
- Frene, Juan Pablo
- Robledo, Natalia Belén
- Ibarbalz, Federico Matias
- Babin, Doreen
- Smalla, Kornelia
- Erijman, Leonardo
- Wall, Luis Gabriel
DOIAbstract
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 t...
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