Researchers use spore traps to monitor for the presence of Pseudoperonospora cubensis (cucurbit downy mildew) in Ontario.
Spore traps were installed in two counties the week of June 7, 2021. No DNA of P. cubensis was detected by any of the traps between June 7th and June 28.
| 2021 Testing Period | Kent County Positive Detections (#/8 sites) |
Elgin & Norfolk Counties Positive Detections (#/8 sites) |
| July 12-15 | 1 | 1 |
| July 15-19 | 0 | 0 |
| July 19-22 | 0 | 0 |
| July 22-26 | 3 | 1 |
| July 26-29 | 0 | 0 |
| July 29-Aug 2 | 4 | 4 |
