Pyrethrins and piperonyl butoxide residues on potato leaves and in soil under field conditions

George F. Antonious, John C. Snyder, Gayatri A. Patel

Research output: Contribution to journalArticlepeer-review

21 Scopus citations


Residues of pyrethrin-I (Py-I) and pyrethrin-II (Py-II), the major insecticidal components of the pyrethrum daisy (Tanacetum cinerariifolium) as well as residues of piperonyl butoxide (PBO, a pyrethrum synergist) were determined in soil and on potato foliage grown under field conditions. A pyrethrum formulation (Multi-Purpose Insecticide) containing the three active ingredients was sprayed twice at the rate of 6 lbs of formulated product.acre-1 (5.4 and 27.2 g A.I. of pyrethrin and PBO, respectively) on potato foliage during the growing season. In soil, three management practices (yard waste compost, grass filter strips, and a no mulch treatment) were used to study the impact of surface soil characteristics on the amount of pyrethrins (Pys) and PBO retained in soil. Soil samples and potato leaves were collected at different time intervals after spraying. Samples were purified and concentrated using solid-phase extraction columns containing C18-Octadecyl bonded silica. Residues were quantified by high-performance liquid chromatograph equipped with a UV detector. The first spray resulted in mean initial deposits of 0.18, 0.40, and 0.99/μg.g-1 potato leaves for Py-I, Py-II, and PBO, respectively. Residues in soil were higher in compost treatments compared to no mulch treatments.

Original languageEnglish
Pages (from-to)261-271
Number of pages11
JournalJournal of Environmental Science and Health - Part B Pesticides, Food Contaminants, and Agricultural Wastes
Issue number3
StatePublished - 2001


  • Half-life
  • Multi-Purpose Insecticide
  • PBO
  • Persistence
  • Pyrethrum synergist
  • Solid phase extraction

ASJC Scopus subject areas

  • Food Science
  • Pollution


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