Bacterial Communities in Soils Affected by Agricultural Practices

Strategic Insights -

Research conducted by the Center for Research and Advanced Studies of the National Polytechnic Institute (CINVESTAV) has revealed that changes in soil characteristics due to varying farming practices can modify the structure of bacterial communities. The study aimed to investigate the impact of different farming practices on the bacterial community in Australian soils. The research found that the application of young maize plants and their neutral detergent fibre fraction significantly altered the bacterial community, but urea did not have a similar effect. Many bacterial groups, such as Streptomyces, Nocardioides, and Kribbella, were enriched by the application of organic material, but less so by urea.

Key Takeaways:

  • The study examined changes in the bacterial community in an Australian Vertisol by applying young maize plants, their neutral detergent fibre fraction, or urea to the soil.
  • The soil organic carbon content was 1.4 times higher in the wheat-cotton rotation than in the conventional tillage with continuous cotton treatment.
  • Approximately 41.6% of the organic carbon was added with maize plants, and 13.1% of the neutral detergent fibre fraction was mineralized after 28 days.
  • The application of young maize plants and their neutral detergent fibre fraction significantly altered the bacterial community and the presumed metabolic functional structure, but urea did not.
  • Many bacterial groups, such as Streptomyces, Nocardioides, and Kribbella, were enriched by the application of organic material, but less so by urea.
  • The research concluded that a limited number of bacterial groups and presumed metabolic functions were affected in an irrigated Vertisol by the different cotton farming systems, but many were strongly affected by the application of maize plants or its neutral detergent fibre.
  • The study has implications for understanding how agricultural practices can impact the structure of bacterial communities in soils.
  • The research was supported by Centro de Investigacion y de Estudios Avanzados del Instituto Politecnico Nacional, NSW Department of Primary Industries, and International Maize and Wheat Improvement Center.
  • The publisher's contact information for the journal Environmental Microbiology Reports is: Wiley, 111 River St, Hoboken 07030-5774, NJ, USA.

Statistics:

  • 41.6% of the organic carbon was added with maize plants
  • 13.1% of the neutral detergent fibre fraction was mineralized after 28 days
  • 1.4 times higher soil organic carbon content in the wheat-cotton rotation than in the conventional tillage with continuous cotton treatment
  • 17 issues of Environmental Microbiology Reports published in 2025 (source: https://onlinelibrary.wiley.com/journal/10.1111/(ISSN)1758-2229)

Sources:

  • NewsRx. Center for Research and Advanced Studies of the National Polytechnic Institute (CINVESTAV) Reports Findings in Agriculture (Young maize plants impact the bacterial community in Australian cotton-sown vertisol more than agricultural practices). Agriculture Week. May 15, 2025; p 325.
  • Young maize plants impact the bacterial community in Australian cotton-sown vertisol more than agricultural practices. Environmental Microbiology Reports, 2025;17(3). (https://onlinelibrary.wiley.com/journal/10.1111/(ISSN)1758-2229)