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This article in JEQ

  1. Vol. 10 No. 4, p. 510-515

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Effects of Sewage Sludge on Phenoxy Herbicide Adsorption and Degradation in Soils1

  1. G. A. O'Connor,
  2. B. C. Fairbanks and
  3. E. A. Doyle2



The adsorption and degradation of two herbicides, 2,4,dichlorophenoxyacetic acid (2,4-D) and 2,4,5-trichlorophenoxyacetic acid (2,4,5-T), were examined in three soils either freshly amended or preconditioned for 2 months with sewage sludge. Sludge additions generally enhanced herbicide degradation, but had no effect on 2,4-D degradation in a soil with a history of 2,4-D applications. Fresh sludge additions had little effect on herbicide adsorption by soils, while preconditioning the sludge-soil mixtures generally increased herbicide adsorption.

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