The behavior and bioactivity of imazaquin in soils

Miscellaneous · Sun Jan 01 00:00:00 EST 1989

OSTI ID:6775952

McKinnon, E J

Laboratory studies were conducted to determine the adsorption and relative mobility of {sup 14}C-labelled imazaquin (2-(4,5-dihydro-4-methyl-4-(1-methylethyl)-5-oxo-1H-imadazol-2-yl)-3-quinolinecarboxylic acid) and {sup 14}C labelled metolachlor (2-chloro-N-(2-ethyl-6-methylphenyl)-N-(2-methoxy-1-methylethyl) acetamide) on Norfolk sand loan (Typic Paleudult), Rion sandy clay loam (Typic Hapludult), Cape Fear sandy clay loam (Typic Umbraquult) and Webster clay loam (Typic Hapluquoll). Imazaquin was more mobile than metolachlor on all four soils. Soils high in humic matter content retained between 45 and 48% of the applied imazaquin and 93 and 97% of the applied metolachlor. The relative order of mobility of imazaquin in the soils was Rion = Norfolk > Cape Fear = Webster. The order for metolachlor in the soils was Rion > Norfolk > Cape Fear > Webster. Adsorption of imazaquin and metolachlor was inversely related to their mobility in the soil columns. Adsorption of imazaquin increased as the suspension pH decreased.

• Research Organization: North Carolina Univ., Chapel Hill, NC (USA)
• OSTI ID: 6775952
• Resource Relation: Other Information: Thesis (Ph. D.)
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
FUNGICIDES
SOIL CHEMISTRY
ADSORPTION
CARBON 14 COMPOUNDS
ENVIRONMENTAL TRANSPORT
PH VALUE
SOILS
TRACER TECHNIQUES
CHEMISTRY
ISOTOPE APPLICATIONS
LABELLED COMPOUNDS
MASS TRANSFER
PESTICIDES
SORPTION
540211* - Environment
Terrestrial- Basic Studies- Radiometric Techniques- (1990-)