Scenario 8 - Lawn Insects - Consumer, 2000

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Scenario 8 - Lawn 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 Lawns (lbs/acre) (c)	Lawn Acres Treated (thousands) (calculated) (d)	Probability for Lawns (calculated) (e)
Active Ingredient (a)	Fertilizer/ Insecticide Combination Products (a)	Straight Insecticide Products(a)	Lawn	Outdoor Plants	Nonplants	Application Rate for Lawns (lbs/acre) (c)	Lawn Acres Treated (thousands) (calculated) (d)	Probability for Lawns (calculated) (e)
Diazinon	1,000	3,016	1,754	1,357	905	3	585	26%
Chlorpyrifos	500	1,508	952	603	452	2	476	21%
Imidacloprid	135	0	135	0	0	0.3	450	20%
Malathion	0	2,011	201	1,207	603	2	101	4%
Carbaryl	0	2,514	251	1,508	754	3	84	4%
Other	865	1,005	1,167	402	302	2	583	26%
	2,500	10,054	4,460	5,077	3,016		2,278
Kline (Hall and Dansbury, 2000). Fertilizer/insecticide combination products: we subtracted 35,000 lbs from "other" and accounted for it under "imidacloprid" (judgment). Allocation of active ingredient pounds separately to lawns, outdoor plants, and nonplants was done as follows: Fertilizer/insecticide combination products: 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%). Meister Publishing Company manuals Pounds applied to lawns divided by application rate for lawns. Lawn acres treated with each active ingredient divided by total lawn acres treated.