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Status and effect of pesticide residues in soils under different land uses of Andaman Islands, India

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Title Status and effect of pesticide residues in soils under different land uses of Andaman Islands, India
Not Available
 
Creator A. V. Murugan & T. P. Swarnam & S. Gnanasambandan
 
Subject Pesticide residues . Soil organisms . Land use
 
Description Not Available
Pesticides are shown to have a great effect
on soil organisms, but the effect varies with pesticide
group and concentration, and is modified by soil organic
carbon content and soil texture. In the humid
tropical islands of Andaman, India, no systematic
study was carried out on pesticide residues in soils of
different land uses. The present study used the modified
QuEChERS method for multiresidue extraction
from soils and detection with a gas chromatograph.
DDT and its various metabolites, α-endosulfan, β-
endosulfan, endosulfan sulfate, aldrin, and fenvalerate,
were detected from the study area. Among the different
pesticide groups detected, endosulfan and DDT
accounted for 41.7 % each followed by aldrin
(16.7 %) and synthetic pyrethroid (8.3 %). A significantly
higher concentration of pesticide residues was
detected in rice–vegetable grown in the valley
followed by rice–fallow and vegetable–fallow in the
coastal plains. Soil microbial biomass carbon is negatively
correlated with the total pesticide residues in
soils, and it varied from 181.2 to 350.6 mgkg−1.
Pesticide residues have adversely affected the soil
microbial populations, more significantly the bacterial
population. The Azotobacter population has decreased
to the extent of 51.8 % while actinomycetes were the
least affected though accounted for 32 % when compared
to the soils with no residue.
Not Available
 
Date 2021-01-23T05:04:13Z
2021-01-23T05:04:13Z
2013-01-01
 
Type Research Paper
 
Identifier A. V. Murugan & T. P. Swarnam & S. Gnanasambandan ,Status and effect of pesticide residues in soils under different land uses of Andaman Islands, India
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/44982
 
Language English
 
Relation Not Available;
 
Publisher Springer Science