Document Detail

Chlorpyrifos residue levels in avian food items following applications of a commercial EC formulation to alfalfa and citrus.
MedLine Citation:
PMID:  14620043     Owner:  NLM     Status:  MEDLINE    
Two 10-day field residue studies were conducted to measure the amount of chlorpyrifos residue found in typical avian food following applications of a commercial 480 g liter(-1) EC (Lorsban 4E) at 1.1 kg AI ha(-1) (1 lb AI acre(-1)) to alfalfa and at 2.3 kg Al ha(-1) (2.0 lb AI acre(-1)) to citrus. Avian food items used in these studies included: crickets (Acheta domestica (L)), earthworms (Lumbricus terrestris L), darkling ground beetle larvae (Tenebrio molitor L), seed heads (Triticum sp), and naturally occurring flying and ground-dwelling insects. The studies incorporated a design involving three main study plots placed within larger treated areas of an alfalfa crop and a mature orange grove. The three main study plots represented three replications and each contained four sub-plots. One sub-plot, on each study plot, was sampled on day 0 (2-h post-application), day 1, day 5 and day 10 post-application. Chlorpyrifos residues were present in all avian food sampled following the application; however, residue levels were lower than estimated residue values typically used by the US EPA to establish expected environmental concentration (EEC) used in screening assessments of risk to terrestrial wildlife.
Larry W Brewer; Harry L McQuillen; Monte A Mayes; Jennifer M Stafford; Susan L Tank
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Pest management science     Volume:  59     ISSN:  1526-498X     ISO Abbreviation:  Pest Manag. Sci.     Publication Date:  2003 Nov 
Date Detail:
Created Date:  2003-11-17     Completed Date:  2004-03-23     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  100898744     Medline TA:  Pest Manag Sci     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1179-90     Citation Subset:  IM    
Springborn Smithers Laboratories, PO Box 2005, Sisters, OR 97759, USA.
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MeSH Terms
Animal Feed / analysis
Animals, Wild
Birds / physiology*
Chlorpyrifos / analysis*
Citrus / chemistry
Environmental Exposure / analysis
Food Chain
Food Contamination / analysis*
Insecticides / analysis*
Insects / chemistry
Medicago sativa / chemistry
Oligochaeta / chemistry
Pesticide Residues / analysis*
Risk Assessment
Seeds / chemistry
Triticum / chemistry
Reg. No./Substance:
0/Insecticides; 0/Pesticide Residues; 2921-88-2/Chlorpyrifos

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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