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# Crop rotation changed pathogen signals more clearly than soil diversity
- URL: https://intelligence.wildlandseco.com/2026-10-21-brazil-rotation-soil-diversity-fusarium/
- Published: 2026-10-21T14:11:16.000Z
- Updated: 2026-10-21T14:11:16.000Z
- Description: A tropical Brazilian experiment reports mixed, underpowered microbial outcomes.
- Author: Benjamin Worlund
- Tags: soil microbiomes, crop rotation, Fusarium, null results, Land, One Health, #ecological-intelligence, #brief-2026-10-21, #global-radar, #peer-reviewed, #geo-latin-america-caribbean

Evidence

Peer-reviewed

Geography

Tropical field site, Brazil

System

Cropland microbiome and pathogens

## WHAT THE EVIDENCE SAYS

In a four-season maize–soybean experiment, rotation did not detectably improve bacterial diversity in early seasons. In the fourth season rotation history coincided with lower fum1 abundance in bulk soil, while crop-residue and disease responses pointed differently.

## WHY IT MATTERS / OUR READ

Microbial-diversity scores, pathogen DNA in soil and real crop disease can tell different stories; sample more than one biological compartment.

## CAVEATS / UNCERTAINTY

Single site and four plots per treatment, with low power for early-season comparisons. No broadly generalizable causal crop-rotation prescription.

## SOURCE

World Journal of Microbiology and Biotechnology — Almeida et al. (2026)  
[View original evidence ↗](https://doi.org/10.1007/s11274-026-05358-2?ref=intelligence.wildlandseco.com)

From the Morning Brief · 2026-10-21

[Read the full Morning Brief →](https://intelligence.wildlandseco.com/morning-brief-2026-10-21/)