Document ID: EPA-HQ-OPP-2007-0437-0005
Agency: epa
Document Type: Supporting & Related Material
Title: 
Posted Date: 2007-08-29T04:00Z

Ecological Incident Statement for Ecological Risk Assessment Problem
Formulation

Fenoxaprop-p-ethyl (PC Code 129092)

and

Fenoxaprop-ethyl (PC Code 128701)

The Agency has received 78 reports of adverse field effects to
non-target plants that have been linked to the use of
fenoxaprop-p-ethyl.  All of these incidents involved damage to a grain
crop (barley, corn, rice, or wheat).  The Agency considered the cause to
be uncertain in 39 cases because more than one herbicide was applied to
the crop.  In the remaining 36 cases, the Agency considers
fenoxaprop-p-ethyl to be the probable cause.  Most of the incidents were
reports of crop damage that occurred following application of the
herbicide directly to the crop, although three incidents occurred from
carryover effects of applications made to another crop in a previous
growing season.  None of the incidents involved damage to crops or other
plants outside the treatment site.  The Agency has received one report
linking fenoxaprop-p-ethyl to adverse field effects to wild animals.  In
1998, approximately 200 fish died in a pond in White County, Illinois 
following application of fenoxaprop-p-ethyl, along with two other
herbicides (fluazifop-p-butyl and fomesafen sodium), on a nearby soybean
field.  Because fenoxaprop-p-ethyl is highly toxic to fish and was
applied in close proximity to the pond, the Agency believes that
exposure to this herbicide was a probable cause or contributing factor
to the fish mortality.

The Agency has received no report of adverse field effects to non-target
animals or plants that have been attributed to the use of
fenoxaprop-ethyl.  The Agency also has no incident report from pesticide
registrants concerning fenoxaprop-ethyl contamination of ground or
surface water.

A lack of reported incidents does not necessarily mean that such
incidents have not occurred.  In addition, incident reports for
non-target plants and animals typically provide information on mortality
events only.  Reports for other adverse effects, such as reduced growth
or impaired reproduction, are rarely received.