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Persistence of Napropamide in/on Tea under North-East Indian Climatic Condition


Napropamide is an amide group of herbicide, used as pre-emergence herbicide controlling in broad leaved weeds of tea, ground nut, citrus, etc. Napropamide 45 SC (Devrinol) was applied on tea bushes twice @ 1.125 and 2.250 g a.i./ha along with untreated control. After following the standard extraction process, the residue of napropamide in made tea and soil cropped with tea was analyzed by HPLC. Napropamide was rapidly dissipated in soil following the first-order kinetics with half-lives in the range of 12.54–27.87 days. The residue in made tea found to be below detectable limit on 7th day samples.

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  1. Agav FA, Voevodin AV (1985) Promising herbicides for egg plants. Zashehita Rastinii 6:19–20

    Google Scholar 

  2. Anonymous (1984) Napropamide, environmental effects branch. US Environmental Protection Agency

  3. Chang LL, Giang BY, Lee K, Tseng CK (1991) Aqueous photolysis of napropamide. J Agric Food Chem 39:617–621

    Article  CAS  Google Scholar 

  4. Gunther FA, Blinn RC (1955) Analysis of insecticides and acaricides. Inter Science Publishers, New York, pp 696

    Google Scholar 

  5. Hoskins WM (1961) Mathematical treatment of loss of pesticide residues. Plant Protect Bull FAO 9:163–168

    Google Scholar 

  6. Kalinova S, Rastenievdni N (1991) Institute of tobacco and tobacco Products. Plovdu, Bulgeria

    Google Scholar 

  7. Murillo Pulgariän JA, Garciäa Bermejo LF (2002) Determination of the pesticide napropamide in soil, pepper, and tomato by micelle-stabilized room-temperature phosphorescence. J Agric Food Chem 50:1002–1008

    Article  Google Scholar 

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We are very grateful to M/S United Phosphorus Limited, Mumbai for financial assistance of this research programme and Manager, Kamalpur Tea Estate, Darjeeling, West Bengal for conducting the field experiment. The infrastructural facilities provided by the BCKV are also thankfully acknowledged.

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Correspondence to Anjan Bhattacharyya.

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Biswas, P.K., Pramanik, S.K., Mitra, S.R. et al. Persistence of Napropamide in/on Tea under North-East Indian Climatic Condition. Bull Environ Contam Toxicol 79, 566–569 (2007).

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  • Napropamide
  • Made tea
  • Soil
  • Residue