Persistence and mobility of nitrofen (niclofen, TOK) in mineral and organic soils

Journal Article · Fri Jan 01 00:00:00 EST 1982 · J. Environ. Sci. Health, Part B; (United States)

DOI:https://doi.org/10.1080/03601238209372308· OSTI ID:6817330

Murty, A S; Miles, J R; Tu, C M

Residues of nitrofen in farm soils, persistence of nitrofen in field microplots, mobility of nitrofen in natural soils and the role of microbial flora in its degradation were studied. Muck soils from vegetable farms in southwestern Ontario contained up to 35 ppm nitrofen in mid-season (August), which decreased to 18 ppm by October. The herbicide was less persistent in sand than in muck. Degradation was slightly faster in sand and muck soils receiving two sprays, than in those sprayed once. From an initial deposit of ca. 2 and 10 ppm resp., in sand and muck field microplots, ca. 2 and 15% persisted after 16 wk. Leaching of nitrofen by water through sand was negligible, and it was even more strongly adsorbed onto organic soil. Natural microbial flora seemed to play an important role in the degradation of nitrofen in soil. Ca. 15 and 38% resp., of the initial concentration persisted in natural sandy loam and muck 16 wk after treatment at 10 ppm, whereas about 94 and 82% resp., persisted in sterilized sandy loam and muck at the same period.

• Research Organization: Research Centre, Agriculture Canada, London, Ontario
• OSTI ID: 6817330
• Journal Information: J. Environ. Sci. Health, Part B; (United States), Vol. 17:2
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
60 APPLIED LIFE SCIENCES
HERBICIDES
BIODEGRADATION
ENVIRONMENTAL TRANSPORT
DECOMPOSITION
ECOLOGICAL CONCENTRATION
MICROORGANISMS
SOILS
TERRESTRIAL ECOSYSTEMS
CHEMICAL REACTIONS
ECOSYSTEMS
MASS TRANSFER
PESTICIDES
510200* - Environment
Terrestrial- Chemicals Monitoring & Transport- (-1989)
553000 - Agriculture & Food Technology