Bulletin of Environmental Contamination and Toxicology 2013-02-01

Dissipation of residues of mancozeb and metalaxyl in tomato (Solanum lycopersicum L.).

Ritu Rani, Vineet K Sharma, G S Rattan, Balwinder Singh, Neeraj Sharma

Index: Bull. Environ. Contam. Toxicol. 90(2) , 248-51, (2013)

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Abstract

Dissipation of mancozeb and metalaxyl in tomato was estimated following four applications of a combination formulation Ridomil MZ (mancozeb 64% + metalaxyl 8%) at 0.25 and 0.50% at 10 days interval by carbon disulphide evolution method and gas liquid chromatography with nitrogen phosphorous detector, respectively. Half-life periods for mancozeb were 3.76 and 4.14 days, whereas for metalaxyl these values were 1.29 and 0.41 days at single and double the application rates, respectively. Residues of mancozeb dissipated below limit of quantification (LOQ) of 0.25 mg kg(-1) after 10 and 15 days at single and double the application dosage, respectively. Similarly, residues of metalaxyl took 3 and 5 days to reach LOQ of 0.02 mg kg(-1), at single and double dosages, respectively.

Related Compounds

  • Metalaxyl
  • Maneb
  • Mancozeb
  • Zineb

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