Reinecke_2007_Ecotoxicol.Environ.Saf_66_244

Reference

Title : The impact of organophosphate pesticides in orchards on earthworms in the Western Cape, South Africa - Reinecke_2007_Ecotoxicol.Environ.Saf_66_244
Author(s) : Reinecke SA , Reinecke AJ
Ref : Ecotoxicology & Environmental Safety , 66 :244 , 2007
Abstract :

Earthworm population density was measured in and adjacent to an orchard in an agricultural area in the Western Cape, South Africa. Worm densities were very low in orchards (22/m(2)) compared to adjacent uncultivated fields (152/m(2)) at a distance from the orchards. The possible effect of organophosphate pesticides on the earthworms was investigated. Background soil concentrations of chlorpyrifos prior to the start of the spraying season were low (0.2-2.7 microg/kg) but persistent for up to 6 months after the last spraying event, and the pesticide was, as a result of rainfall, transported to nontarget areas by runoff. Background concentrations of azinphos methyl were higher than those of chlorpyrifos (1.6-9.8 microg/kg) but not detectable 2 weeks after a spraying event. Azinphos methyl was mostly transported by wind (spray drift) to adjacent areas. A microcosm study indicated effects of chlorpyrifos on earthworms as determined by measuring biomass change and Cholinesterase inhibition. It is concluded that earthworms were affected detrimentally by the pesticides due to chronic (chlorpyrifos) and intermittent (azinphos methyl) exposure.

PubMedSearch : Reinecke_2007_Ecotoxicol.Environ.Saf_66_244
PubMedID: 16318873

Related information

Citations formats

Reinecke SA, Reinecke AJ (2007)
The impact of organophosphate pesticides in orchards on earthworms in the Western Cape, South Africa
Ecotoxicology & Environmental Safety 66 :244

Reinecke SA, Reinecke AJ (2007)
Ecotoxicology & Environmental Safety 66 :244