Persistence and dissipation of readymix formulations of insecticides in/on okra fruits.
Dissipation behaviour of ready mix polytrin C 44EC (profenophos 40% + cypermethrin 4%) and spark 36EC (triazophos 35% + deltamethrin 1%) applied at 1 L/ha in okra crop during Kharif in year 2000 was studied at 0, 1, 3, 5 and 7 days after treatment. Dissipation on 7th day was found to be maximum (98.4%) for profenophos followed by triazophos (86.2%), cypermethrin (73.5%) and deltamethrin (55.7%). Half life (t1/2) values for the above insecticides were 1.35, 2.55, 4.11 and 7.60 days, respectively. All the insecticides followed a first order kinetics. Profenophos and triazophos followed a biphasic dissipation pattern with faster dissipation in phase I (0-1 days) and manifesting slower rate of dissipation in phase II (1-7 days).
Nath
Paras
P
Department of Entomology, CCS, Haryana Agricultural University, Hisar, India.
Kumari
Beena
B
Yadav
P R
PR
Kathpal
T S
TS
D028483:Abelmoschus / Q000737:chemistry*; D002626:Chemistry, Pharmaceutical; D005638:Fruit / Q000737:chemistry; D007306:Insecticides / Q000032:analysis* / Q000378:metabolism; D007700:Kinetics; D009570:Nitriles / Q000032:analysis / Q000378:metabolism; D063086:Organothiophosphates / Q000032:analysis / Q000378:metabolism; D011722:Pyrethrins / Q000032:analysis / Q000378:metabolism; D012989:Soil Pollutants / Q000032:analysis* / Q000378:metabolism; D014230:Triazoles / Q000032:analysis / Q000378:metabolism; D014874:Water Pollutants, Chemical / Q000032:analysis* / Q000378:metabolism
D007306:Insecticides; D009570:Nitriles; D063086:Organothiophosphates; D011722:Pyrethrins; D012989:Soil Pollutants; D014230:Triazoles; D014874:Water Pollutants, Chemical; C017180:decamethrin; C012584:triazophos