title: Dissipation and residues of 2,4-D: -dimethylammonium in wheat and soil.
abstract: The environmental behavior of 720 g/L 2,4-D: -dimethylammonium AS under wheat field conditions was studied in detail. The dissipation behaviors of 2,4-D: -dimethylammonium in wheat and soil were fitted to first-order kinetic equation (C = C (0) e (-lambdat )). But different experimental points and years have different initial deposits and half-lives (T (1/2)). After applying 720 g/L 2,4-D: -dimethylammonium AS at recommended dosage and 1.5-fold recommended dosage during 3-4 leaf stage, the residues of 2,4-D: -dimethylammonium in wheat plant, wheat grain and soil were all lower than 0.02 mg/kg. The obtained results suggested that, it is safety for application at the recommended dosage during 3-4 leaf stage to control weeds in wheat field.
authors.affiliation: Ministry of Agriculture, Nanjing Jiangsu, People's Republic of China.
authors.forename: He
authors.initials: H
authors.lastname: Jiang
authors.forename: Shen
authors.initials: S
authors.lastname: Yan
authors.forename: Wang
authors.initials: W
authors.lastname: Donglan
authors.forename: Sun
authors.initials: S
authors.lastname: Xing
authors.forename: Fan
authors.initials: F
authors.lastname: Mingtao
authors.forename: Liu
authors.initials: L
authors.lastname: Xianjin
mesh_terms: D015084:2,4-Dichlorophenoxyacetic Acid / Q000032:analysis* / Q000737:chemistry / Q000378:metabolism; D000383:Agriculture / Q000379:methods; D002681:China; D002947:Cities; D004123:Dimethylamines / Q000032:analysis* / Q000737:chemistry / Q000378:metabolism; D004784:Environmental Monitoring; D005506:Food Contamination / Q000032:analysis; D006540:Herbicides / Q000032:analysis* / Q000737:chemistry / Q000378:metabolism; D007700:Kinetics; D010573:Pesticide Residues / Q000032:analysis* / Q000737:chemistry / Q000378:metabolism; D012987:Soil / Q000032:analysis*; D012989:Soil Pollutants / Q000032:analysis* / Q000737:chemistry / Q000378:metabolism; D014908:Triticum / Q000737:chemistry / Q000378:metabolism*
chemical_list: D004123:Dimethylamines; D006540:Herbicides; D010573:Pesticide Residues; D012987:Soil; D012989:Soil Pollutants; C037991:2,4-D amine; D015084:2,4-Dichlorophenoxyacetic Acid