Pesticide Residues Found in Potatoes:

What Pesticide?	How Often is it Found?5	Conventional vs. Organic	Toxicity6	Other Foods with this Pesticide
Chlorpropham	87.2%	Conventional vs. Organic		Other Foods
Endosulfan sulfate	4.9%	Conventional vs. Organic		Other Foods
Thiabendazole	4.4%	Conventional vs. Organic		Other Foods
DDE p,p'	3.6%	Conventional vs. Organic		Other Foods
Aldicarb sulfoxide	3.3%	Conventional vs. Organic		Other Foods
Pentachlorobenzene (PCB)	3.0%	Conventional vs. Organic		Other Foods
o-Phenylphenol	2.2%	Conventional vs. Organic		Other Foods
Quintozene (PCNB)	1.9%	Conventional vs. Organic		Other Foods
Metalaxyl	1.1%	Conventional vs. Organic		Other Foods
Methamidophos	0.8%	Conventional vs. Organic		Other Foods
Acephate	0.5%	Conventional vs. Organic		Other Foods
Phorate sulfone	0.5%	Conventional vs. Organic		Other Foods
Aldicarb sulfone	0.5%	Conventional vs. Organic		Other Foods
Endosulfan I	0.3%	Conventional vs. Organic		Other Foods
Dicloran	0.3%	Conventional vs. Organic		Other Foods
Heptachlor epoxide	0.3%	Conventional vs. Organic		Other Foods
Dieldrin	0.3%	Conventional vs. Organic		Other Foods

Footnotes

1. Tests for any given food are often conducted in multiple years. In all cases WhatsOnMyFood shows only the most recent test year. The test results for Potatoes come from test year 2002.

2. All pesticide residue results on this page and elsewhere on the WhatsOnMyFood website were obtained by the United Stated Department of Agriculture (USDA) Pesticide Data Program (PDP)

3. Punzi, JS, Lamont, M, Haynes, D, Epstein, RL, USDA Pesticide Data Program: Pesticide Residues on Fresh and Processed Fruit and Vegetables, Grains, Meats, Milk, and Drinking Water, Outlooks on Pesticide Management, June, 2005. Available online

4. All toxicological data was either compiled for this site — typically from U.S. EPA reregistration eligibility decisions — or obtained from data compiled for the PesticideInfo website

5. The percentage found is for all four of the following combinations combined: domestic or imported, and conventional or organic. To see data broken down into each of these combinations separately, click on "Conventional vs. Organic."

6. A pesticide residue may not be listed as carcinogenic, neurotoxic, hormone-disrupting or as a reproductive or developmental toxicant for either of two reasons: (1) it may have been studied for toxicity in one or more of these categories and the weight of the evidence did not support designating it as toxic, or (2) it may not have been studied.