Biosolids and Tillage Practices Influence Soil Bacterial Communities in Dryland Wheat

Microbial Ecology
Daniel C SchlatterTimothy Paulitz

Abstract

Class B biosolids are used in dryland wheat (Triticum aestivum L.) production in eastern Washington as a source of nutrients and to increase soil organic matter, but little is known about their effects on bacterial communities and potential for harboring human pathogens. Moreover, conservation tillage is promoted to reduce erosion and soil degradation. We explored the impacts of biosolids or synthetic fertilizer in combination with traditional (conventional) or conservation tillage on soil bacterial communities. Bacterial communities were characterized from fresh biosolids, biosolid aggregates embedded in soil, and soil after a second application of biosolids using high-throughput amplicon sequencing. Biosolid application significantly affected bacterial communities, even 4 years after their application. Bacteria in the families Clostridiaceae, Norcardiaceae, Anaerolinaceae, Dietziaceae, and Planococcaceae were more abundant in fresh biosolids, biosolid aggregates, and soils treated with biosolids than in synthetically fertilized soils. Taxa identified as Turcibacter, Dietzia, Clostridiaceae, and Anaerolineaceae were highly abundant in biosolid aggregates in the soil and likely originated from the biosolids. In contrast, Oxalob...Continue Reading

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Citations

Jun 21, 2019·Environmental Monitoring and Assessment·Isabel Cristina de Barros TranninFátima Maria de Souza Moreira
May 1, 2021·International Journal of Molecular Sciences·Rajtilak MajumdarKanniah Rajasekaran

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BETA
PCR
PCRs
the

Software Mentioned

PERMANOVA
QIIME scripts
NMDS
RDP
VSEARCH
vegan
DESeq2
cutadapt
UPARSE
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