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Pesticide Research Journal
Year : 1996, Volume : 8, Issue : 1
First page : ( 71) Last page : ( 74)
Print ISSN : 0970-6763. Online ISSN : 2249-524X.

Persistence of Copper on Betelvine (Piper betle L.) Leaves and Soil Following Application of Bordeaux Mixture

Kar Satya N., Nag Subir K., Pal S., Dasgupta B., Adityachaudhury N.

Department of Agricultural Chemistry and Soil Science, AICRP on Betelvine, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur-741 252, West Bengal, India

Online published on 3 November, 2011.

Received:  11  August,  1995; Accepted:  16  December,  1995.

Abstract

Dissipation of copper on betelvine leaves and cropped soil after the application of Bordeaux mixture as spray and drench in field is reported. Copper residues, determined on 0 (lh), 7, 15, 30 and 45 d after sixth spraying and third drenching, ranged from 83–84% in leaves and 71–89% in soil after 45 d of application, depending on the dose. The half-lives were around 17 d in leaves and 15–24 d in soil. The safe waiting period was between 52–67 d in leaves depending on the dose of application.

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Keywords

Persistence, Bordeaux mixture, betelvine.

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