Persistence of fensulfothion in a sandy-loam soil and uptake by rutabagas, carrots and radishes using microplots

Journal Article · Thu Jan 01 04:00:00 UTC 1981 · J. Environ. Sci. Health, Part B; (United States)

DOI:https://doi.org/10.1080/03601238109372263· OSTI ID:5616069

Greenhalgh, R; Read, D C

Field microplots were treated with 141 and 282 ppm fensulfothion and 37.1 and 74.2 ppm fensulfothion sulfone. These concentrations are equivalent to field treatment rates of 8.48 and 16.96 kg AI/ha, fensulfothion, and 2.23 and 4.47 kg AI/ha, fensulfothion sulfone, respectively, for banded application (10 cm wide, rows 80 cm apart). The half-lives in a sandy loam soil were 30-39 and 14-23 days, respectively. Fensulfothion sulfone and sulfide were the main derivatives found in fensulfothion treated soil. The maximum levels of these derivatives were 21.22 and 22.95 ppm, respectively for the 8.48 kg/ha treatment and 33.90 and 42.45 ppm, respectively, for the higher treatment, which occurred between 30-60 days. Carrots appeared to take up more fensulfothion from soil than rutabagas or radishes. The residue levels at harvest decreased in the order carrot peel greater than pulp greater than rutabagas root greater than peel greater than pulp. Residue levels of fensulfothion and sulfone in radishes were similar to those found in rutabagas. The ratio sulfoxide/sulfone in rutabagas ranged from 0.4-1.5 and in carrots from 1.7-7.6. This phenomenon is thought to be due to oxidative enzyme systems present in rutabagas. Dimethyl phosphorothioic acid, but not dimethyl phosphoric acid was detected (max. 1.33 ppm) in some rutabagas samples but not in carrots.

• OSTI ID: 5616069
• Journal Information: J. Environ. Sci. Health, Part B; (United States), Journal Name: J. Environ. Sci. Health, Part B; (United States) Vol. 16:3; ISSN JPFCD
• Country of Publication: United States
• Language: English

Related Subjects

510200* -- Environment
Terrestrial-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
CARROTS
DOSE-RESPONSE RELATIONSHIPS
ENVIRONMENTAL TRANSPORT
FOOD
MASS TRANSFER
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
RADISHES
SOILS
SULFONES
UPTAKE
VEGETABLES