MN Water Science Center: Pesticides in rain near Princeton, Minnesota, May through September 1994.

USGS Water Science Center, Minnesota

Table 20.--Pesticides in rain near Princeton, Minnesota, May through September 1994.

[Total number of samples is 17; mg/L, micrograms per liter; --, not detected]
Common name	Brand name	Percent detections	Maximum concentration ( mg/L)	Median concentration ( mg/L)	Date of maximum concentration
Herbicides
Alachlor	Lasso	88	1.2	0.11	May 24
Atrazine	Aatrex	88	2.1	.32	June 7
Cyanazine	Bladex	59	24.0	.10	May 24
Metolachlor	Dual	59	.39	.03	May 24
Metribuzin	Sencor	53	.10	.04	September 14
Acetochlor	Harness+	41	.14	.02	August 2
Propazine	Milogard	41	.03	.02	June 7
EPTC	Eradicane	35	.26	.08	July 26
Pendimethalin	Prowl	35	.43	.12	May 3
Prometon	Pramitol	29	.07	.04	July 5
Simazine	Princep	29	.04	.02	May 24
Ethalfluralin	Sonalan	24	.13	.05	May 24
Propachlor	Ramrod	18	.14	.10	May 16
Propanil	Erban	18	.12	.08	May 24
Terbacil	Sinbar	12	.03	.02	June 14
Pebulate	Tillam	6	.01	--	June 14
Triallate	Far-Go	6	.02	--	June 7
Trifluralin	Treflan	6	.01	--	May 16
Benfluralin	Benefin	0	<.01	--	--
Butylate	Sutan+	0	<.01	--	--
Tebuthiuron	Spike	0	<.01	--	--

Insecticides
Azinphos-methyl	Guthion	53	.49	.06	May 24
Chlorpyrifos	Lorsban	35	.05	.01	July 26
Methyl parathion	Penncap-M	35	.18	.11	August 2
Terbufos	Counter	29	1.14	.03	May 3
Phorate	Thimet	18	.03	.02	May 24
Fonofos	Dyfonate	12	.04	.04	July 26
Lindane	Lindane	12	.09	.05	August 2
Malathion	Cythion	12	.04	.03	May 24
Diazinon	Diazinon	0	<.01	--	--
Ethoprop	Mocap	0	<.01	--	--
Permethrin	Ambush	0	<.01	--	--

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