Submitted to: Meeting Abstract
Publication Type: Abstract Only
Publication Acceptance Date: 6/16/2009
Publication Date: 8/15/2009
Citation: Gamiz, B., Celis, R., Cox, L., Cornejo, J., Koskinen, W.C. 2009. Effect of Olive-mill Waste Addition to Soil on Sorption, Persistence, and Leaching of the Herbicide Fluometuron [abstract]. American Chemical Society. 77:103. Interpretive Summary:
Technical Abstract: Organic amendment addition to agricultural soils is an agronomic practice that can greatly affect the behavior of pesticides. Olive-mill waste (OMW) is an organic residue generated in great amounts in olive oil producing countries, and its addition to agricultural soils has been proposed as an alternative for its disposal and to increase soil fertility. In this work, we assessed the effects of OMW addition to two agricultural soils (clay and sandy loam) on the sorption, persistence, and leaching of the herbicide fluometuron. Batch sorption experiments indicated that addition of OMW at rates of 1, 2, and 5% (w:w) increased the sorption of fluometuron in both soils. The increase in sorption was more pronounced for the sandy loam soil than for the clay soil. Incubation experiments and column leaching tests revealed that OMW addition to both soils increased the persistence and retarded the leaching of fluometuron. These results indicate that OMW addition to agricultural soils can significantly affect the behavior of fluometuron and that these effects should be considered to optimize the performance of the herbicide in amended soils.