Can We Commercially Produce Certified Organic Cherries in Canada?
July 28, 2003
Cherry fruit fly has been a major barrier to expansion of organic cherry production in the Pacific Northwest of Canada and the United States. Recently a new insect control product has come to the table that is effective against Cherry Fruit Fly, maybe making growing organic cherries possible. Success is registered in Canada (but contains inert materials disallowed for organic production). Entrust carries OMRI approved, but is not yet available in Canada.
Both Success and Entrust are Spinosad based products. Spinosad an antibiotic product of a soil actinomycete (explanation) (image) demonstrates rapid contact and ingestion activity in a variety of insects. The mode of action of Spinosad is characterized by excitation of the insect nervous system, leading to involuntary muscle contractions, prostration with tremors, and paralysis. Spinosad also has effects on GABA receptor function that may contribute further to its insect activity. To read more about Spinosad read "Development of Spinosad and Attributes of A New Class of Insect Control Products".
The Dow Chemical Company is currently considering pursuing registration of Entrust in Canada. If they decide to do this they will begin the efficacy trials needed - at least for cherry fruit fly in 2004.
Canadian label for Success (258 kb/pdf format). US label of Entrust (193 kb/pdf format).
An excellent biological review read "Western cherry fruit fly (Rhagoletis Indifferens Curran) and its management in the Pacific Northwest United States".