During work conducted between 2003 and 2006 on the potential for genetically modified cotton to affect soil microbiota it became apparent that variety type can influence microbiology associated with the rhizosphere.

Microorganisms in soil regulate a wide range of processes that are critical for plant growth and crop productivity.

A workshop entitled _Microbial Indicators of River Health_ was held at Macquarie University, Sydney, on 31 July- 1 August 1997.

Most herbicides are complex molecules and their decomposition often requires several different chemical conversions, each mediated by a variety of organisms.