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EVALUATION OF PESTICIDE RESIDUES IN SOIL, WATER AND CROPS ALONG THE COURSE OF RIVER MUSI, HYDERABAD

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Title EVALUATION OF PESTICIDE RESIDUES IN SOIL, WATER AND CROPS ALONG THE COURSE OF RIVER MUSI, HYDERABAD
 
Creator TIKUTE SHASHIKANT MADHUKAR
 
Contributor SHANTI, M
 
Subject EVALUATION, PESTICIDE, RESIDUES, SOIL, WATER ,CROPS, RIVER, MUSI, HYDERABAD
 
Description An investigation entitled ‘Evaluation of pesticide residues in soil, water and crops
grown along the course of river Musi’ is aimed at estimating pesticide residues in crops, soil
and water and their channelization into milk along the cultivated area of river Musi within
city limits. Fifteen samples of water, thirteen soil samples, sixteen samples of plant and
finally eleven samples of milk were analyzed for residues of organochlorine,
organophosphate and synthetic pyrethroids pesticides. The radial distribution of pesticide
residues away from Musi has also been studied at two locations viz., Peerzadiguda and
Parvatpuram. Analysis of pesticide residues has been done at All India Network Project on
Pesticide Residues, College of Agriculture, Rajendranagar, Hyderabad and AICRP on Forage
Crops, ARI, Rajendranagar, Hyderabad.
Multiresidue study of Musi waters revealed that almost all the samples were found to
be contaminated with organochlorine pesticides. Out of 15 water samples studied ΣHCH,
ΣDDT and ΣEndosulfan was detected more frequently with mean values 3.336, 2.610 and
3.792 μg l -1
, respectively. Organophosphate pesticides which were commonly found were
chlorpyriphos (7 samples) followed by quinolphos and methyl parathion (6 samples each).
Among the different group of pesticides detected in soil samples, total of
organochlorine pesticides ranged from of 0.108 to 0.894 mg kg -1, and maximum
concentration of α- endosulfan was up to 0.377 mg kg -1. Organophosphates were in the
range of 0.012 to 0.136 mg kg -1 showing maximum contamination with quinolphos (30.76%
samples) and chlorpyriphos (15.38% samples). Synthetic pyrethroids were not detected in
any of the soil samples
Out of 16 plant samples except one sample (Afzalgunj) all the samples were found to
be contaminated with one or more organochlorine pesticides. Total organochlorine pesticides
present were in the range of 0.011 (Budhwel) to 0.558 mg kg -1 (Attapur village) with
highest concentration of α-endosulfan up to 0.421 mg kg -1 (Imlibun). Aligator weed showed
the contamination of p,p’DDT (0.021 ppm), colocasia (α-endosulfan, 0.139 ppm) and guinea
grass was also observed to be contaminated with p,p’ DDE (0.011 ppm). Organophosphate
pesticides in the range of 0.011 to 0.105 mg kg -1 , whereas quinolphos (BDL to 0.083 mg
kg-1) were recorded in maximum number of plant samples i.e. seven; followed by that of
phorate (BDL to 0.046 mg kg-1).
Milk samples of cattle fed with Musi forages were observed to be more contaminated
than pasteurized milk with regards to organophosphate pesticides. The sum total of isomers
of HCH, DDT and metabolites of endosulfan were detected in 100%, 66.66%, and 50%
samples with mean values 0.037, 0.03 and 0.168 mg kg -1, respectively in the milk of cattle
fed with Musi forage. As far as commercial brands of milk are concerned γ-HCH are was the
dominant contaminant exceeding MRL in four samples, while DDT isomers exceeded MRL
in two samples. One sample of milk was found to exceed maximum residue limit of 0.10
mg/kg as recommended by WHO for ΣHCH and 4 samples exceeded MRL of 0.01 mg/kg
for γ-HCH. Residues of methyl parathion and malathion were detected in traces in two
samples, while organophosphate was not detected in pasteurized milk samples. Pasteurization
completely eliminated organophosphate residues.
Both the organochlorine and organophosphate pesticides residues in soil, water and
crop were found to be reducing with increasing distance from the Musi. Physicochemical
properties of water (pH, EC, BOD and COD) and soil were observed to be in safer limit for
crop production. The magnitude of residue of organochlorine and organophosphate pesticide
varied very little after passing through sewage treatment plant.
 
Date 2016-08-17T13:30:16Z
2016-08-17T13:30:16Z
2010
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/72741
 
Language en
 
Relation D8622;
 
Format application/pdf
 
Publisher ACHARYA N.G. RANGA AGRICULTURAL UNIVERSITY RAJENDRANAGAR, HYDERABAD