(1971) Pesticide Residues in the Eggs of some Iowa Fish by Lauren G. Johnson, R.L. Morris, conducted by the State Hygienic Laboratory, October 1971. University of Iowa
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Abstract
Routine monitoring of the pesticide concentrations in a number of Iowa rivers over a period of years indicated that chlorinated hydrocarbon insecticides used in row crop agriculture were being carried into the rivers by soil erosion. The concentrations of dieldrin found were not uniform over the state. They were highest in areas where extensive row crop farming, with its accompanying erosion, was practiced. A study was then made of the pesticide levels in the edible flesh of fish from most of the rivers in Iowa.
| Item Type: | Departmental Report |
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| Keywords: | fish, pesticides, Iowa, streams, rivers, natural resources, fish eggs |
| Subjects: | Agriculture and food production Agriculture and food production > Pesticides Natural resources and environment Natural resources and environment > Ecology > Endangered species > Endangered fish |
| ID Code: | 49950 |
| Deposited By: | Margaret Barr |
| Deposited On: | 23 Jul 2024 20:16 |
| Last Modified: | 23 Jul 2024 20:16 |
| URI: | https://publications.iowa.gov/id/eprint/49950 |