EFFECT OF CHLORPYRIFOS ON SOIL MICROBIAL ACTIVITY

被引：40
作者：
POZO, C
MARTINEZTOLEDO, MV
SALMERON, V
RODELAS, B
GONZALEZLOPEZ, J
机构：
[1] UNIV GRANADA, FAC PHARM, DEPT MICROBIOL, E-18071 GRANADA, SPAIN
[2] UNIV GRANADA, INST WATER RES, E-18071 GRANADA, SPAIN
来源：
ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY | 1995年 / 14卷 / 02期
关键词：
INSECTICIDE; CHLORPYRIFOS; SOIL MICROBIAL ACTIVITY;
D O I：
10.1002/etc.5620140201
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
A study of the effects of the insecticide chlorpyrifos on soil microbial activity was made. Parameters included total bacterial populations, fungi, aerobic N2-fixing bacteria, denitrifying bacteria, nitrifying bacteria, nitrogenase activity, acid and alkaline phosphatases, arylsulfatase, and dehydrogenase. The presence of 2.0, 3.5, 5.0, and 10.0 kg/ha of chlorpyrifos significantly (p < 0.05) decreased aerobic dinitrogen-fixing bacteria and dinitrogen fixation, particularly after a second insecticide treatment. The total number of bacteria increased significantly at concentrations of 2.0 to 10.0 kg/ha. Activities of acid and alkaline phosphatases and dehydrogenase significantly decreased initially at concentrations of 2.0 to 10.0 kg/ha, but recovered after 14 d to levels similar to those in control soil without chlorpyrifos. Fungal populations, nitrifying bacteria, and denitrifying bacteria were not affected as a consequence of the addition of the insecticide.
引用
收藏
页码：187 / 192
页数：6
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