EFFECT OF THE INSECTICIDES METHYLPYRIMIFOS AND CHLORPYRIFOS ON SOIL MICROFLORA IN AN AGRICULTURAL LOAM

被引：38

作者：

MARTINEZTOLEDO, MV ^{[1
]}

SALMERON, V ^{[1
]}

GONZALEZLOPEZ, J ^{[1
]}

机构：

[1] UNIV GRANADA,INST WATER RES,E-18071 GRANADA,SPAIN

来源：

PLANT AND SOIL | 1992年 / 147卷 / 01期

关键词：

CHLORPYRIFOS; INSECTICIDES; METHYLPYRIMIFOS; ORGANOPHOSPHORUS; SOIL MICROFLORA;

D O I：

10.1007/BF00009367

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

A study of the effects of two selected organophosphorus insecticides methylpyrimifos and chlorpyrifos on soil microflora in an agricultural loam was made. The insecticides had concentrations of 10 to 300 mug g-1. The presence of methylpyrimifos at concentrations of 100 to 300 mug g-1 or chlorpyrifos at concentrations from 10 to 300 mug g-1 significantly decreased aerobic dinitrogen fixing bacteria and dinitrogen fixation. Nitrifying bacteria decreased at concentrations of 20() and 300 mug g-1 of methylpyrimifos. The presence of 10 to 300 mug g-1 of chlorpyrifos decreased the total number of bacteria. However, fungal populations and denitrifying bacteria were not affected as a consequence of the addition of the organophosphorus insecticides to the agricultural soil, showing that these microorganisms can tolerate high amounts of those insecticides.

引用

页码：25 / 30

页数：6

共 12 条

[1] HYDROLYSIS OF SELECTED ORGANO-PHOSPHORUS INSECTICIDES BY 2 BACTERIA ISOLATED FROM FLOODED SOIL [J].