Soil Microbiome in Long-Term Onion Cropping Systems in Southern Brazil

A 17-year experiment in Ituporanga, SC, Southern Brazil, describes the soil microbial community under three onion cropping systems: conventional tillage, no-tillage, and a no-tillage vegetable system. The dataset, authored by Leonardo Khaoê Giovanetti, includes 16S and ITS gene sequencing data from soil samples collected after the onion cycle. It was last updated on 2026-05-28.

Use Cases

• Compare microbial community structure based on the described tillage systems (CT, NT, NTVS).
• Analyze the relative abundance of bacterial, archaeal, and fungal taxa linked to nutrient cycling and plant symbiosis mentioned in the description.
• Investigate the relationship between soil disturbance and the prevalence of specific microbial groups like Firmicutes, Bacillaceae, and Nitrososphaeraceae.
• Assess the stability and taxonomic clarity of soil microbiomes in conservation-oriented systems like NTVS.

Strengths

• Data originates from a long-term experiment conducted over 17 years.
• Includes microbial community analysis via 16S and ITS gene next-generation sequencing.
• Compares three distinct agricultural management systems with clear operational definitions.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• The 3.6 MB file size suggests a relatively small dataset.

Provenance

Source

figshare

Collection Method

Soil samples were collected after the onion cycle and analyzed by next-generation sequencing (NGS).

Time Range

Experiment conducted over 17 years; specific sample collection date is not provided.

Freshness

Last updated 2026-05-28 04:50:48; freshness should be verified.

Geography

Ituporanga, SC, Southern Brazil.