Copper EDA application methods: Which application methods are used with Copper EDA?

• A. Foliar spray only
• B. Soil drench
• C. Fogging
• D. Surface spray or subsurface

Answer: (D)

Copper EDA is intended to treat algae directly in water, so the application needs to bring the product into the aquatic environment where algae live. Applying it as a surface spray onto the water or injecting it so it distributes below the surface ensures contact with algae both at the surface and throughout the water column. These methods align with how the product is designed to work in water bodies and maximize contact time with algae.

Other methods don’t fit aquatic use: applying to foliage, soil, or attempting to fog the area won’t deliver the chemical to the algae in the water and can be ineffective or unsafe. Thus, surface spray or subsurface application are the appropriate methods.