Food × analyte
Dicloran on onions
2002–2024 · 7 tested years
3,819samples tested
for this analyte
for this analyte
15samples with
a detection
a detection
0.4%of analyte-tested samples
Testing detected Dicloran in 15 of 3,819 onions samples actually tested for this analyte. This percentage uses analyte-tested samples, not all 3,819 samples of this food.
Year-by-year results
Actual tested and detected sample counts.
7 tested years between 2002 and 2024. Gaps mean no validated tests in this release.
Read the yearly counts
| Year | Tested | Detected | Rate |
|---|---|---|---|
| 2002 | 741 | 0 | 0.0% |
| 2003 | 741 | 2 | 0.3% |
| 2004 | Not tested | — | — |
| 2005 | Not tested | — | — |
| 2006 | Not tested | — | — |
| 2007 | Not tested | — | — |
| 2008 | Not tested | — | — |
| 2009 | Not tested | — | — |
| 2010 | Not tested | — | — |
| 2011 | 186 | 1 | 0.5% |
| 2012 | 558 | 0 | 0.0% |
| 2013 | Not tested | — | — |
| 2014 | Not tested | — | — |
| 2015 | Not tested | — | — |
| 2016 | Not tested | — | — |
| 2017 | 708 | 8 | 1.1% |
| 2018 | Not tested | — | — |
| 2019 | Not tested | — | — |
| 2020 | Not tested | — | — |
| 2021 | Not tested | — | — |
| 2022 | Not tested | — | — |
| 2023 | 177 | 2 | 1.1% |
| 2024 | 708 | 2 | 0.3% |
Testing panels and detection limits change. These observations do not establish a causal trend.
About these results
Source: USDA Pesticide Data Program. Included annual releases: 2002, 2003, 2011, 2012, 2017, 2023, 2024.