Woody Ornamental Phytotoxicity Evaluations, Ft. Collins, Co. 1985

Woody ornamentals were tested for sensitivity to insecticides, miticides and surfactants used for ornamental/shade tree pest control. Testing included seedling nursery stock, 3 mo to 1.5 yr old, and shrubs at the Colorado State Forest Service nursery; shrubs at the Plant Environmental Research Center; and trees on the Colorado State Univ campus. Seedling nursery stock received either 1 application (3 Sep), or 2 applications (3 Sep and 10 Sep). Mature trees and shrubs received 2 applications (12 Sep and 18 Sep). Concentrations of pesticides used were 4X label rates and were applied until point of run-off. Plants were evaluated 7 and 14 days after last application.