The fate of pesticide on tea plant and the prediction of pesticide residue in fresh leaves of tea plant

  • CHEN Zongmao Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou/Zhejioang 310008, CHINA
  • LIU Guangming Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou/Zhejioang 310008, CHINA

Abstract

The degradative kinetics of pesticides on tea plant surface are characterized by an initial rapid degradation which follows a first-order kinetics, then transferred to a more slower degradative rate. The degradative process mainly consists of photodegradation, evaporation, rainfall elution and growth dilution. The influencing parameters of these processes were investigated on tea plant. The predictive model of the initial concentration, photodegradation rate constant, evaporation rate constant, rainfall elution rate, growth dilution rate and the total degradative rate was discussed and verified in four locations situated in the range of 25-30N latitude, and acceptable results were obtained.
Keywords: India; tea productivity; pesticide residues; biocontrol agents; biocides

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How to Cite
Zongmao, C., and L. Guangming. “The Fate of Pesticide on Tea Plant and the Prediction of Pesticide Residue in Fresh Leaves of Tea Plant”. International Journal of Tea Science, Vol. 2, no. 04, Nov. 2003, p. ., doi:10.20425/ijts.v2i4.4593.