21 Mar Clarification on Chlorothalonil Use for Turf
Further to the Pest Management Regulatory Agency’s re-evaluation decision dated May 10, 2018, chlorothalonil use for turf is restricted to two (total) applications per year at labelled rates for control of foliar diseases plus one application in the fall for snow mould control.
PMRA have clarified the meaning of two applications, using the following examples for clarification:
If an application using a product containing chlorothalonil is made to greens one week and an application is made to fairways the following week, then no more applications would be allowed that season other than one application for snow mould.
Another example would be a golf course makes an application of a product containing chlorothalonil on greens, tees, and fairways on July 1 and then it is applied 14 days later on the same areas, then no more applications would be allowed that season other than one application for snow mould.
For further information, you can contact the PMRA directly at [email protected]