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Scenario 16 - Outdoor Plant/tree Insects - Consumer, 2000
Method 2, Confidence medium
Active
Ingredient (a)		 Pounds applied to lawns,
outdoor plants, and nonplants
(thousands)		 Pounds applied to lawns,
outdoor plants, and nonplants
(thousands) (b)		 Application
Rate for
Outdoor
Plants/trees
(lbs/acre) (c)		 Outdoor
Plant/tree
Acres Treated
(thousands)
(calculated) (d)		 Probability
(calculated) (e)
Fertilizer/
Insecticide
Combination
Products (a)		 Straight
Insecticide
Products(a)		 Lawn Outdoor Plants Nonplants
Malathion 0 2,011 201 1,207 603 2 604 29%
Carbaryl 0 2,514 251 1,508 754 3 503 24%
Diazinon 1000 3,016 1,754 1,357 905 3 452 22%
Chlorpyrifos 500 1,508 952 603 452 2 302 15%
Imidacloprid 135 0 135 0 0 0.3 0 0%
Other 865 1,005 1,166 402 302 2 201 10%
  2,500 10,054 4,459 5,077 3,016   2,061  
  1. Kline (Hall and Dansbury, 2000). Fertilizer/insecticide combination products: We subtracted 35,000 from "other" and accounted for it under "imidacloprid" (judgment).
  2. Allocation of active ingredient pounds separately to lawns, outdoor plants, and nonplants was done as follows:
    Fertilizer/insecticide combinations: 100% is applied to lawns (judgment)
    Straight insecticides: 20% of total is applied to lawns, 50% to outdoor plants, 30% to nonplants (judgment)
    Straight insecticides: Split of each active ingredient to lawns vs. outdoor plants vs. nonplants is based on judgment (assumptions: diazinon: 25%-45%-30%, carbaryl and malathion: 10%-60%-30%, chlorpyrifos: 30%-40%-30%, other: 30%-40%-30%).
  3. Meister Publishing Company manuals
  4. Pounds applied to outdoor plants/trees divided by application rate for outdoor plants/trees.
  5. Outdoor plants/trees acres treated with each active ingredient divided by total outdoor plant/tree acres treated.