Premium
DDT: Persistence in Northern Spodosols
Author(s) -
Owen Ray B.,
Dimond John B.,
Getchell A. Stanley
Publication year - 1977
Publication title -
journal of environmental quality
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.888
H-Index - 171
eISSN - 1537-2537
pISSN - 0047-2425
DOI - 10.2134/jeq1977.00472425000600040005x
Subject(s) - podzol , soil water , spruce budworm , persistence (discontinuity) , choristoneura fumiferana , environmental science , pesticide , forestry , ecology , agronomy , environmental chemistry , hydrology (agriculture) , biology , soil science , lepidoptera genitalia , geology , chemistry , geography , tortricidae , geotechnical engineering
DDT (dichloro‐dipenyl‐trichloroethene) was used between 1954 and 1967 for the control of spruce budworm ( Choristoneura fumiferana ) in northern Maine. Soils originally tested in 1967 were resampled in 1973 and 1976 to help clarify the degree of persistence of DDT in northern spodosols. Soils from areas sprayed three times at 1.12 kg/ha continue to contain up to 4.5 ppm DDT residues 12 years after application. Pesticide levels in the soils sampled in 1973 and 1976 were not significantly different from levels measured in 1967. Also, analyses of soil profile samples through the A and B horizons indicated that >96% of the residues were still located in the O1 and O2 horizons.