Studies by EHRF Scientist Katherine von Stackelberg on the Safety of Three Products Used to Maintain Green Space

This page provides studies, provided by EHRF scientist Dr. Katherine von Stackelberg, on the safety of three products used to maintain “green space” – residential lawns, commercial or institutional turf surfaces and public facilities such as parks and playing fields.  The three products are:

  • Azoxystrobin – one of the most widely used fungicide products.  The report concludes:

The toxicological and exposure evidence indicates negligible risk in humans from exposure to azoxystrobin in the environment.

The full report is available here.

  • Bifenthrin – one of the most widely used insecticide products. The report concludes:

Given the utility and efficacy of bifenthrin with respect to its termiticidal properties, the analysis qualitatively suggests a net positive risk-benefit tradeoff.

The full report is  available here.

  • MCPA and 2,4-D – two of the most widely used herbicide products.
    Dr. von Stackelberg has conducted a study to determine whether
    there was any validity to the suggestion from some epidemiologic
    studies that both 2,4-D and MCPA may be associated with an increased risk of non-Hodgkins lymphoma (NHL), Hodgkin’s disease, leukemia, and soft tissue sarcoma.  The study concludes:

The combined evidence indicates it is highly implausible that exposure to 2,4-D and/or MCPA are associated with a risk of developing NHL or other lymphohematopoietic cancers.

The study has been published in a peer reviewed scientific publication, the Journal of Toxicology. The full report is available here.