Objectives. Identifying Urban Pesticide Use Trends using PUR. 1. Identify urban non-residential pesticide user groups.

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1 Identifying Urban Pesticide Use Trends using PUR Objectives Nila Kreidich Graduate Student Researcher Mary Lou Flint, Cheryl Wilen, and Minghua Zhang University of California Davis DPR Contract: 2-198C 1. Identify urban non-residential pesticide user groups. 2. Examine the primary pesticide use trends within each user group. 3. Compare use trends among counties. 4. Develop methods to identify use report data gaps

2 Methods: PUR Analysis Data source: pesticide use report database (PUR) Time frame: PUR-GIS application on ArcView Study sites: Sacramento, San Diego, and Orange Counties Major groups reporting pesticide use in urban areas Structural pest control Landscape maintenance Rights-of of-way Public Health Pest Control Regulatory Pest Control

3 Structural Pest Control Definition Data quality Accounting for the greatest percentage of pesticide use. Over 9% of the total insecticide use, including fumigants In 22, accounted for 98% of the total urban insecticide use in Orange County. Structural Pest Control lbs of active ingredient / building unit Structural Pest Control: The rate of insecticide use per housing unit plus private nonfarm business establishment (2 census) Sacramento County San Diego Orange County

4 thousands of lbs of active ingredient Structural Pest Control: trends in fumigant use Sacramento County Orange County Methyl Bromide San Diego County thousands of lbs of active ingredient Sulfuryl Fluoride Sacramento County Orange County San Diego County Structural Pest Control Insecticides used for localized treatments include: pyrethroids organophosphates Imidacloprid liquid nitrogen disodium octaborate tetrahydrate. Structural pest control operators are shifting away from using diazinon and chlorpyrifos toward pyrethroid insecticides. lbs of active ingredient / housing unit lbs of active ingredient / housing unit Structural Pest Control: The rate of organophosphates applied per housing unit, 2 census data Sacramento San Diego Orange trend line: R Square =.5 Structural Pest Control: The rate of pyrethroids applied per housing unit, 2 census data Sacramento San Diego Orange "Trend line: R Square=.54"

5 Landscape Maintenance Definition PUR data only represents a fraction of the overall use. Landscape Maintenance: Pesticide use in 22 herbicides % % % 7% 7% Average Pesticide Use % 4% % herbicides fungicides Oils fungicides % % % Oils % % 373 4% Insecticides 228 5% % 341 4% fumigants 22.5% % 36 4% 24% 55% Insecticides fumigants molluscicides 49.1% 256 2% % rodenticides 2.5% 67.1% 17.1% molluscicides TOTAL rodenticides

6 Landscape Maintenance: herbicide use Landscape Maintenance Herbicide use for Landscape Maintenance thousands 7 of lbs of 6 active 5 ingredient Landscape Maintenance: The rate of herbicides applied per multiple unit structures plus private non-farm business establishments, 2 census lbs of active ingredient.15 /building unit lbs of active ingredient Diazinon and Chlorpyrifos: lbs of active ingredient Sacramento County San Diego County Orange County

7 Landscape Maintenance: insecticides used Landscape Maintenance: insecticides used Sacramento County 4 Orange County 7 35 lbs of active ingredient lbs of active ingredient Pyrethroid Carbaryl Imidacloprid Diazinon and Chlorpyrifos Pyrethroid Carbaryl Imidacloprid Diazinon and Chlorpyrifos

8 Rights-of of-way Pesticides are applied to control pests near and around impervious surfaces. Federal, state, county, and township highways and roads Electric utilities including substations, switching stations, transmission lines, and distribution lines Pipelines (including pumping stations) Public surface drainageways Railroads Public irrigation waterways Banks of public bargeways and areas around locks and dams Parking lots Cell phone towers Bike trails and other public paths outside of recreational areas Flood control sites thousands of lbs of active ingredient Rights-of of-way: herbicide use Glyphosate 43% 34% 82% Diuron 34% 34% 8% Glyphosate Use Sacramento Orange San Diego thousands of lbs of active ingredient Diuron

9 Public Health Pest Control Definition Accounts for less than 1% of total insecticide use Most insecticides are used for mosquito abatement Some herbicide use lbs of active 25 ingredient 2 Public Health Pest Control Pesticide Use Regulatory Pest Control Definition Control against invasive species Includes urban and rural Less than 1% of the total insecticides used Most herbicide use consists of glyphosate and 2,4-D

10 Identifying use report data gaps Survey : groups that do not report use landscape businesses Maintenance or operations staff Kennels and pet groomers Teachers and school janitors UC Cooperative Extension Landscape maintenance professionals Structural pest control operators Caltrans other Next steps Survey urban pesticide users to find out: Pesticide use practices Disposal practices Where they get information about how to manage pests How to disseminate information about IPM and water quality protection.