title: [Effects of pesticides metolachlor and S-metolachlor on soil microorganisms in aquisols of Southern China. I. Catalase activity].
abstract: This paper studied the effects of different concentrations (0, 5, 20, and 100 mg.kg(-1)) metolachlor and its enantiomer S-metolachlor (Dual Gold) on soil catalase activity. The results showed that 20 mg.kg(-1) metolachlor had the most successive stimulating effect, 5 mg.kg(-1) metolachlor had an inhibitory effect in the early period, while 100 mg.kg(-1) metolachlor had a stimulating effect in the late period. Different concentrations Dual Gold displayed a tendency stimulation-inhibition-stimulation. 5 and 100 mg.kg(-1) metolachlor might have more damage on soil ecosystem than different concentrations Dual Gold.
authors.affiliation: Institute of Environmental Science, Zhejiang University, Hangzhou 310029, China. yingzhou@zjut.edu.cn
authors.forename: Ying
authors.initials: Y
authors.lastname: Zhou
authors.forename: Weiping
authors.initials: W
authors.lastname: Liu
authors.forename: Tingting
authors.initials: T
authors.lastname: Wang
mesh_terms: D000081:Acetamides / Q000494:pharmacology*; D002374:Catalase / Q000378:metabolism*; D002681:China; D017753:Ecosystem; D006540:Herbicides / Q000494:pharmacology*; D012987:Soil / Q000032:analysis*; D012988:Soil Microbiology
chemical_list: D000081:Acetamides; D006540:Herbicides; D012987:Soil; D002374:Catalase; C051786:metolachlor