“…Microbial degradation is considered an important mechanism in the dissipation of crop protection products in the environment. Various bacterial strains and consortia that degrade or mineralize crop protection products such as linuron (Dejonghe et al, 2003;Sorensen et al, 2005;Breugelmans et al, 2007;Satsuma, 2010), atrazine (Topp et al, 2000;Rousseaux et al, 2002;Getenga et al, 2009) and isoproturon (Sorensen et al, 2001) or 2,4-dichlorophenoxyacetic acid (Dunbar et al, 1997) have been isolated from pesticide-treated agricultural soils by means of enrichment in suspended cultures in which the pesticide of interest is provided as sole nutrient and/or energy source. However, little is known about the involvement and contribution of these organisms to the in situ degradation of the respective compounds, and concerns exist about the occurrence of biases during the enrichment process.…”