title: Environmental behavior of profenofos under paddy field conditions.
abstract: The environmental behavior of 40% profenofos EC under paddy field conditions was studied. After application of 40% profenofos EC at 900 g a.i./ha level, the initial deposits of profenofos on rice plant, soil and water were found to be 32.700, 0.224 and 3.854 mg/kg respectively. Half-lives (t(1/2)) of profenofos on those substrates were observed to be 5.47, 3.75 and 3.42 days respectively. The residue levels of profenofos on rice straw, soil and rice grain were significantly affected by the dosage and frequency applied. The obtained results might help to recommend the suitable dose and calculate the safety period of profenofos application.
authors.affiliation: Department of Food Science and Engineering, Northwest A&F University, 712100 Yangling, Shaanxi, People's Republic of China.
authors.forename: Jiang
authors.initials: J
authors.lastname: He
authors.forename: Mingtao
authors.initials: M
authors.lastname: Fan
authors.forename: Xianjin
authors.initials: X
authors.lastname: Liu
mesh_terms: D002681:China; D004305:Dose-Response Relationship, Drug; D007306:Insecticides / Q000032:analysis* / Q000493:pharmacokinetics; D063086:Organothiophosphates / Q000032:analysis* / Q000493:pharmacokinetics; D012275:Oryza / Q000254:growth & development* / Q000378:metabolism; D010573:Pesticide Residues / Q000032:analysis* / Q000493:pharmacokinetics; D012989:Soil Pollutants / Q000032:analysis* / Q000493:pharmacokinetics; D013997:Time Factors; D014874:Water Pollutants, Chemical / Q000032:analysis* / Q000493:pharmacokinetics
chemical_list: D007306:Insecticides; D063086:Organothiophosphates; D010573:Pesticide Residues; D012989:Soil Pollutants; D014874:Water Pollutants, Chemical; C024273:profenofos