Item A: Use of Pesticides in City Parks and Buildings

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oil); Propiconazole; Chlorothalonil; and Fenarimol (e.g. Rubigan). The fungicides are applied in rotation to improve their efficacy and reduce the development of resistance in the fungal pathogens. Applications of fungicides have decreased at the rose garden over the last few years as a result of careful attention to cultural practices and the selection of disease-resistant varieties. Herbicides are applied at the Owen Rose Garden to control weeds in the rose beds and the flowering borders. Weeds in the turf areas are treated every few years as the population of weeds reaches the established threshold for treatment. The following herbicides were used at the Owen Rose Garden in the past year: Glyphosate (e.g. Roundup or Aquamaster) for weeds in the beds and paths; Diethylamine salt (e.g. Sterling) for weeds in the turf; and Clethodim (e.g. Envoy Plus) for grasses in the beds and flowering borders. Some aerosol wasp and hornet killer is used at the Owen Rose Garden for control of stinging insects in high traffic areas. The spray cans used contain permethrin and tetramethrin and they are of the type available at retail stores. 4. What specific chemicals are used along urban waterways for blackberry control? Blackberry, a state-listed noxious weed, is controlled on habitat restoration sites, including along some waterways, through a regime of repeat mowings followed by a selective spot spraying of Garlon 3A and Milestone on the resprouting top growth. The pesticide is applied only to the regrowth on mowed plants, new growth that is less than a year old. Blackberry fruits are born on wood that is in its second season or older so this method limits the potential for berries to be contaminated with the pesticide. By greatly reducing the biomass of the plants, this approach reduces the food storage ability of the plants, which then succumb to the targeted spot-spraying, significantly reducing the amount of herbicide required. This treatment method is the least toxic effective method and it is approved by State and Federal resource protection agencies. The repeat mowing and spray is recognized by the Oregon Watershed Enhancement Board (OWEB) as the preferred method of control and it is required for blackberry removal on restoration projects that are funded through that agency. For more information contact: Kevin Finney, Park Operations Manager 541-682-4809 Kevin.p.finney@ci.eugene.or.us Brian York, Facility Management Landscape Program Coordinator 541-682-5321 brian.s.york@ci.eugene.or.us 4