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Effects of Dazomet Fumigation on Soil Phosphorus and the Composition of Harboring Microbial Communities. | LitMetric

AI Article Synopsis

  • The research explored how dazomet (DZ) soil fumigation affects phosphorus (P) levels and microbial communities involved in P transformation in three different farm soils.
  • Following DZ fumigation, available P levels initially increased, but key microbial enzyme activity and certain microbial genes related to P processing showed a significant decline.
  • Over time, while the diversity and abundance of specific P-transforming microbes dropped shortly after fumigation, they rebounded significantly 14-28 days later before decreasing again, indicating a dynamic relationship between DZ treatment and microbial community composition.

Article Abstract

The soil phosphorus (P) cycle and P transformation are largely driven by the soil bacterial microbial community. However, little is known about the effects of dazomet (DZ) soil fumigation on soil P and soil microbial communities associated with P transformation. This research investigated P released from three farm soils as a result of DZ fumigation and changes in enzyme activity, gene abundance, and the encoding alkaline phosphatase microbial community. After DZ fumigation, we observed a briefly significant increase in the available P and the active P fractionation. The soil ALP activity, 16 abundance, and the gene decreased significantly after DZ fumigation. The abundance and diversity of -harboring microbes also decreased shortly after fumigation, increased significantly 14-28 days later, and then decreased again toward the end of the experimental period of 86 days. The shared OTUs between treatments became fewer with increasing time after fumigation. The changes in available P and the active P fractionation after DZ fumigation were significantly correlated with the abundance of the dominant -harboring microbes. DZ fumigation promoted P mineralization in these farm soils and changed the composition of -harboring microbial communities, which will benefit crops able to absorb and use P.

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Source
http://dx.doi.org/10.1021/acs.jafc.9b08033DOI Listing

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