Microbiological Attributes and Performance of the Bacterial Community in Brazilian Cerrado Soil with Different Cover Crops

With their characteristics and biomass production, influenced the microbiological attributes of the soil differently, where the highest values for the attributes microbial biomass carbon, C-CO2, qCO2, and abundance of the 16S rRNA gene were obtained with cover crops S. bicolor, U. ruziziensis, U. ruziziensis, and P. americanum, respectively

Sebastião Ferreira de Lima; Vinicius Andrade Secco; Cátia Aparecida Simon; Antônio Marcos Miranda Silva; Eduardo Pradi Vendruscolo; Maria Gabriela de Oliveira Andrade; Lucymara Merquides Contardi; Ana Paula Leite de Lima; Meire Aparecida Silvestrini Cordeiro; Mariele Silva Abreu

2021

Scholarcy highlights

  • The assessment of the cover crop biomass indicates an intense variation of plant material on the soil, providing different conditions for microbial activities
  • With their characteristics and biomass production, influenced the microbiological attributes of the soil differently, where the highest values for the attributes microbial biomass carbon, C-CO2, qCO2, and abundance of the 16S rRNA gene were obtained with cover crops S. bicolor, U. ruziziensis, U. ruziziensis, and P. americanum, respectively
  • The structure of the bacterial community in the soil cultivated with S. bicolor, except for the soil with C. ochroleuca, differed completely from the other cover crops and fallow and presented R values close to 1
  • It was observed that there was a maximum correlation with the bacterial community only for the soil cultivated with P. miliaceum, which showed the maximum negative correlation with the aerial dry biomass
  • Americanum, and C. ochroleuca were the cover crops that showed greater differentiation in the structure of the soil bacterial community, with S. bicolor and P. americanum being the plants with the highest production of plant biomass
  • In soils with U. ruziziensis, high bacterial abundance was observed, as well as high basal soil respiration and metabolic quotient, and the latter may indicate an imbalance in the environment

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