Movement of clopyralid in a soil amended with olive oil mill wastewater as related to soil porosity

The effect of olive oil mill waste water (OOW) amendment on leaching of the herbicide clopyralid (3,6-dichloropicolinic acid) in soil columns has been investigated. OOW amendment increased organic carbon content of a soil and affected its porosity by reducing large pores (r > 10 μm) and increasing small pores (r < 0.1 μm). This increase of non-conducting pores by OOW amendment resulted in a reduction of herbicide leaching due to an increase of herbicide interaction with soil matrix enhancing the adsorption and degradation processes.

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Bibliographic Details
Main Authors: Cox, L., Becker, Alex, Celis, R., López Núñez, Rafael, Hermosín, M.C., Cornejo, J.
Other Authors: Comisión Interministerial de Ciencia y Tecnología, CICYT (España)
Format: artículo biblioteca
Language:English
Published: Technische Universität München 1996
Subjects:Clopyralid, Herbicide leaching, Olive oil mill wastewater, Soil amendment, Wasteresidue, Soil porosity,
Online Access:http://hdl.handle.net/10261/61034
http://dx.doi.org/10.13039/501100007273
http://dx.doi.org/10.13039/501100011011
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Summary:The effect of olive oil mill waste water (OOW) amendment on leaching of the herbicide clopyralid (3,6-dichloropicolinic acid) in soil columns has been investigated. OOW amendment increased organic carbon content of a soil and affected its porosity by reducing large pores (r > 10 μm) and increasing small pores (r < 0.1 μm). This increase of non-conducting pores by OOW amendment resulted in a reduction of herbicide leaching due to an increase of herbicide interaction with soil matrix enhancing the adsorption and degradation processes.