11 Jul Pest Update – July 11

Posted at 18:33h in Recent News by

Hi everyone.  I few quick updates before the weekend:

Spore Trapping Update:

  • No late blight spores in PEI or NB.  Maine continues to find late blight spores but not reports of infection yet.
  • Early blight spores were found in large numbers at two sites in Prince County but largely absent everywhere else. It was a similar trend for brown spot. Grey mold numbers are quite low at the moment.

 

July 10th, 2025
Early Blight Brown Spot Grey Mold Fusarium
West Prince 0 2 8 0
East Prince 67 187 14 1
Queens 20 12 11 0
Kings 0 0 9 0

 

Aphid Alert Update:

 

  • Aphid numbers remain high, averaging over 4 aphids per trap. Numbers are higher in the western half of the Island than in the eastern half.
  • No green peach aphids were detected this week. The majority of aphids detected are non-colonizing aphids
  • Seed growers should remain vigilant with an aggressive mineral oil application program.

 

Region Week Ending Number of Samples Green Peach Aphid Potato Aphid Buckthorn Aphid Foxglove Aphid Bird Cherry-Oat Aphid Other Aphid Total Average per Sample
WEST PRINCE 11-Jul-25 28 0 3 16 0 2 99 120 4.29
EAST PRINCE 11-Jul-25 17 0 1 5 0 0 102 108 6.35
CENTRAL QUEENS 11-Jul-25 21 0 8 8 0 0 68 84 4.00
SE QUEENS/KINGS 11-Jul-25 1 0 0 0 0 0 1 1 1.00
EAST KINGS 11-Jul-25 10 0 0 1 0 0 12 13 1.30
  Total 77 0 12 30 0 2 282 326 4.23

 

Additional Pest/Disease Updates:

  • I had reports of European corn borer (ECB) in Kings Co. this week (moths and egg masses). Growers/scouts should remain vigilant on scouting for egg masses.
  • For growers applying protective fungicides for early blight/brown spot/black dot:  don’t use the same fungicides or products from the same groups back-to-back. Alternate chemistries to maximize control and minimize resistance.
  • While we aren’t seeing much Alternaria pressure so far, brown spot (Alternaria alternata) is more prevalent than early blight (Alternaria solani) in PEI. Therefore, ensure you are using a fungicide labelled for brown spot control.  Here is a short list of products listed for brown spot and early blight control (this may not include every product registered):
    • Luna Tranquility (Group 7 & 9)
    • Miravis Duo (Group 3 and 7)
    • Cevya (Group 3)
    • Quadris Top (Group 3 & 11)
    • Veltyma (Group 3 and 11)
    • Aprovia Top (Group 3 and 7)

 

 Next Crop Update Meeting:

  • Tuesday, July 15th – 2:30 pm at Ag Insurance Corp Building, Kensington
  • Attend in-person or by Zoom.  Contact Ryan for Zoom details

Have a great weekend!

Ryan