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Dissipation Study of Thiophanate Methyl Residue in/on Grapes (Vitis vinifera L.) in India

Abstract

A multi-location field trial was conducted in India during 2006–2008 to evaluate the dissipation pattern of thiophanate methyl (75% WP) in/on grapes at two application rates (500 and 1,000 g a.i. ha−1). The quantitative analysis of the fungicide residues as carbendazim was performed using a UV/VIS spectrophotometer at the maximum absorption band of 281 nm. The average recovery was found 87% and the relative standard deviations (RSD) were below 3.8%. Following the first order kinetics the fungicide dissipates in grapes with a half-life (t ½) value of 4.74–6.52 days irrespective of locations and doses.

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Acknowledgments

Authors are thankful to M/S Biostadt India Ltd, Mumbai, India, for sponsoring this research program.

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Correspondence to Anjan Bhattacharyya.

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Mandal, S., Das, S. & Bhattacharyya, A. Dissipation Study of Thiophanate Methyl Residue in/on Grapes (Vitis vinifera L.) in India. Bull Environ Contam Toxicol 84, 592–595 (2010). https://doi.org/10.1007/s00128-010-9985-0

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Keywords

  • Thiophanate methyl residue
  • Dissipation
  • Grapes
  • UV/VIS Spectrophotometer