Effects of pesticides on soil and water microflora and mesofauna in wetland ricefields: a summary of current knowledge and extrapolation to temperate environments

摘要: This review summarises information on the behaviour of pesticides and their impacts microorganisms non-target invertebrates that was collected in, or is applicable to, temperate wetland ricefields. An extensive bibliographic survey shows current knowledge fragmentary partly outdated. Pesticides applied soil at recommended levels rarely had a detrimental effect microbial populations activities. They more invertebrate populations, inducing blooming individual species floodwater zooplankton reducing aquatic oligochaetes in soil. Available raises concerns regarding long-term effects (i) microorganisms, primary producers, importance to fertility, (ii) predators rice pests vectors, (iii) metabolism pesticides.