The arsenal of pesticides available to licensed producers in Canada constantly changes as Health Canada’s Pest Management Regulatory Agency (PMRA) adds or removes permitted sprays, so here is a comprehensive list that will be kept consistently up to date with those changes.
Effect: Sulphur is toxic to fungi – inhibiting their cell’s respiration.
Useful against: Powdery Mildew.
Concerns: Lethal, toxic gasses are emitted when sulfur combusts. The burning of sulfur produces sulfur dioxide, a toxic gas. The even more lethal gas, Hydrogen Sulphide (H2S) is also produced and even included in the warning label.
Botaniguard Emulsified Solution and 22 Wettable Powder by Lam Corporation.
Inert ingredient (Bio Ceres): Kaolin Clay (carrier), cornstarch or calcium carbonate (dispersant,) citric acid (disintegration agent, ) and xanthan gum or cellulose (binder.) As well as polysorbate 80 or polyethylene glycol, if they choose to use a surfactant.
Effect: A predatory mold that parasitizes insects.
Useful against: Aphids, whiteflies, and thrips.
Concerns: Produces nitrogen oxides upon combustion which are carcinogenic.