Research

« Return to all Research Projects

Section Title

Crop rotation affects disease suppressive soil microbiomes

Crop Types
  • Whole Farm

Summary

In this project, a crop rotation study was conducted at two field sites (Morden, Manitoba and Saskatoon, Saskatchewan) in the 2021 and 2022 cropping seasons. A total of 9 crop combinations/treatments, including cereals (Maize, Wheat, Barley, Durum), pulses (Lentil, Pea and Soybeans) and oilseeds (Canola), were evaluated. Samples from rhizosphere and bulk soils were subjected to metagenomics and physicochemical analysis. Soil microbiome analysis uses 16S rRNA (bacteria), ITS (fungi) genes and whole metagenome shotgun sequencing with the top 6-inch bulk and crop rhizosphere soil samples.

Key Takeaways

  • Crop rotation alters the abundance and diversity of the major pathogenic and non-pathogenic/beneficial microbial (fungi and bacteria) taxa and affects gene sequence abundance related to disease suppression.
  • Fungal pathogenic and non-pathogenic microbiome changes were more responsive to the crop types and soil properties than bacterial communities.
  • Crop rotation affects all fungal diversity indices.
  • Crop rotation affects soil chemical properties, the concentration of NO3-N, Ca, Cl, and soil pH, which positively or negatively correlate with the diversity of the soil microbial community.

Project Details

Principal Investigator
Dr. Xiben Wang
Project Status
Completed
Start Date
2021
Completion Date
2023
Funding Partners
WGRF, MB Agriculture
Total Project Cost
366000
MCA Funding
84000

Field Issues

  • Crop Rotation,
  • Soil

Top