title: Persistence of napropamide in/on tea under North-East Indian climatic condition.
abstract: 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.
authors.affiliation: Institute of Agriculture, Visva-Bharati, Sriniketan 731236, West Bengal, India.
authors.forename: Pabitra Kumar
authors.initials: PK
authors.lastname: Biswas
authors.forename: Sukhendu Kumar
authors.initials: SK
authors.lastname: Pramanik
authors.forename: Santi Ranjan
authors.initials: SR
authors.lastname: Mitra
authors.forename: Anjan
authors.initials: A
authors.lastname: Bhattacharyya
mesh_terms: D028241:Camellia sinensis / Q000737:chemistry*; D002980:Climate; D006540:Herbicides / Q000737:chemistry*; D007194:India; D015394:Molecular Structure; D009281:Naphthalenes / Q000737:chemistry*; D012987:Soil / Q000032:analysis*; D012989:Soil Pollutants; D013662:Tea / Q000737:chemistry*; D013997:Time Factors
chemical_list: D006540:Herbicides; D009281:Naphthalenes; D012987:Soil; D012989:Soil Pollutants; D013662:Tea; C010909:devrinol