CAN (ON): Which type of crop protection is effective for whitefly?

Efficacy trials are key to keeping growers informed about which chemicals currently work and which don’t for Bemisia whitefly. Entomologists at the University of Maryland and Delaware recently did such a study, and included newer pesticide registrations.

A typical poinsettia crop in Ontario can battle both B (Middle-East-Asia species) and Q-type (Mediterrannean species) Bemisia.
Done on poinsettia with the less-resistant (but still challenging) Bemisia “B” type (aka the Middle East-Asia species), Dr. Stanton Gill and his team tested a plethora of chemicals. These were applied according to company-recommended rates and application dates.

You can find the full summary of their final sampling date in October here.

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