title: Residue and bio-efficacy evaluation of controlled release formulations of imidacloprid against pests in soybean (Glycine max).
abstract: Controlled release (CR) formulations of imidacloprid (1-(6 chloro-3-pyridinyl methyl)-N- nitro imidazolidin-2- ylideneamine) were prepared using novel amphiphilic polymers synthesized from polyethylene glycol and aliphatic diacids employing encapsulation technique. The bioefficacy of the prepared CR formulations was evaluated against major pests of soybean, namely stem fly, Melanagromyza sojae Zehntmer and white fly, Bemisia tabaci Gennadius along with a commercial formulation at the experimental farm of Indian Agricultural Research Institute (IARI), New Delhi during kharif 2009 and 2010. Most of the CR formulations of imidacloprid gave significantly better control of the pests compare to its commercial formulations, however the CR formulations, Poly [poly (oxyethylene-1000)-oxy suberoyl] amphiphilic polymer based formulation performed better over others for controlling of both stem fly incidence and Yellow Mosaic Virus (YMV) infestation transmitted by white fly. Some of the developed CR formulations recorded higher yield over commercial formulation and control. Nodulation pattern of soybean was not affected due to treatment of CR and commercial formulations of imidacloprid. Also the residues of imidacloprid in seed and soil at harvest were not detectable for both CR and commercial formulations.
authors.affiliation: Division of Agricultural Chemicals, Indian Agricultural Research Institute, New Delhi, India.
authors.forename: Totan
authors.initials: T
authors.lastname: Adak
authors.forename: Jitendra
authors.initials: J
authors.lastname: Kumar
authors.forename: Debjani
authors.initials: D
authors.lastname: Dey
authors.forename: N A
authors.initials: NA
authors.lastname: Shakil
authors.forename: S
authors.initials: S
authors.lastname: Walia
mesh_terms: D000818:Animals; D002851:Chromatography, High Pressure Liquid; D003692:Delayed-Action Preparations; D004175:Diptera; D006430:Hemiptera; D007093:Imidazoles / Q000032:analysis; D007306:Insecticides / Q000032:analysis / Q000138:chemical synthesis / Q000737:chemistry; D000073943:Neonicotinoids; D009574:Nitro Compounds / Q000032:analysis; D010573:Pesticide Residues / Q000032:analysis*; D010935:Plant Diseases / Q000517:prevention & control; D013025:Glycine max / Q000737:chemistry
chemical_list: D003692:Delayed-Action Preparations; D007093:Imidazoles; D007306:Insecticides; D000073943:Neonicotinoids; D009574:Nitro Compounds; D010573:Pesticide Residues; C082359:imidacloprid