ON FARM MONITORING OF BUTACHLOR AND THIOBENCARB RESIDUES IN RICE GRAIN

R. JAYAKUMAR and S. SANKARAN

doi:https://doi.org/10.29321/MAJ.10.A01564

Madras Agricultural Journal

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ON FARM MONITORING OF BUTACHLOR AND THIOBENCARB RESIDUES IN RICE GRAIN

Author: R. JAYAKUMAR and S. SANKARAN,

p-ISSN: 0024-9602, e-ISSN:2582-5321, Vol: 81, Issue: sep-sep,

DOI:https://doi.org/10.29321/MAJ.10.A01564

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Abstract

Rice grain samples were collected during kharif and rabi seasons of 1991-93 from farmers' holdings at Coimbatore district to monitor the butachlor/thiobencarb residues. Out of 43 rice grain samples collected from butachlor applied fields, 30 samples registered residues at detectable levels ranging from 0.0120 to 0.0246 ppm. Similarly 33 out of 45 samples registered thiobencarb residues ranging from 0.012 to 0.0284 ppm. Based on the percentile distribution class, contamination of equal or less than 0.0046 ppm of butachlor and 0.0055 pprn of thiobencarb was observed in 50 per cent of the samples analysed

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