Effect of pesticides on microbial biomass of flooded soil

被引：18

作者：

Rath, AK ^{[1
]}

Ramakrishnan, B ^{[1
]}

Rath, AK ^{[1
]}

Kumaraswamy, S ^{[1
]}

Bharati, K ^{[1
]}

Singla, P ^{[1
]}

Sethunathan, N ^{[1
]}

机构：

[1] Cent Rice Res Inst, Cuttack 753006, Orissa, India

来源：

CHEMOSPHERE | 1998年 / 37卷 / 04期

关键词：

D O I：

10.1016/S0045-6535(98)00082-4

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Application of 2,4-D and its analog 2, 4, 5-T at 0.75 mu g g(-1) soil led to a distinct increase in microbial biomass carbon content over that of untreated soil samples both under flooded and nonflooded conditions. 2,4-D was inhibitory to microorganisms at 7.5 and 15.0 mu g g(-1) soil. Repeated applications of a commercial formulation (an isomeric mixture) of hexachlorocyclohexane (HCH) to flooded soil caused a marked increase in microbial biomass content. Technical grade gamma-HCH was also stimulatory to microbial biomass content. Suspensions of soil treated even once with commercial HCH formulation effected rapid aerobic degradation of alpha- and gamma-HCH, but not beta- and delta-HCH, in a mineral salts medium supplemented individually with these isomers as a single carbon source. (C) 1998 Elsevier Science Ltd. All rights reserved.

引用

页码：661 / 671

页数：11

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