Premium
Distribution of Chlorinated Insecticides in Cultivated Soil
Author(s) -
Nash R. G.,
Woolson E. A.
Publication year - 1968
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1968.03615995003200040030x
Subject(s) - aldrin , dieldrin , endrin , heptachlor , toxaphene , chlordane , environmental chemistry , chemistry , loam , pesticide , toxicology , environmental science , agronomy , biology , soil water , soil science
The 1966 distribution of nine chlorinated insecticides in a 38 cm profile was determined in a Congaree sandy loam soil which had received accumulations of 73 or 146 kg/ha as frequently repeated foliar applications during the 1951, 1952, and 1953 growing seasons. Residues of aldrin (pure and technical—determined as dieldrin because only trace amounts of aldrin were detected), dieldrin, isodrin + endrin, endrin, heptachlor + heptachlor epoxide, chlordane, BHC, toxaphene, and Dilan were found throughout the profile. BHC and isodrin were more uniformly distributed throughout the profile than aldrin, dieldrin, Dilan, toxaphene, and chlordane. Between 85 to 90% of the latter insecticides were concentrated in the upper 23 cm, which probably corresponds to the cultivated layer. Residues were greatest in the 7.6 to 23 cm depths and least below the 23 cm depth. The relative mobility of the insecticides was: BHC ≥ isodrin > heptachlor > endrin > toxaphene ≥ dieldrin ≥ aldrin ≥ Dilan ≥ chlordane.