Wheat Pete's Word, May 18: Stripe Rust Alert, Fungicide Timing and Willow Tree Control


Wondering why the wheat is looking burnt? Or if the frost affected your crop? Have you been out scouting for insects yet? Peter Johnson, resident agronomist for RealAgriculture, returns to answer questions and share his agronomic insight in his weekly update — the Word.

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Have a question for Wheat Pete? Call 1-888-746-3311, send him a tweet (@wheatpete), or email him at [email protected]


  • 00:00 Stripe Rust in Essex, Kent, South Middlesex County
    • Scout, scout, scout. If you have it, you need to spray immediately.
  • Frost
    • 02:00 How many frost warnings can you have in a row?
    • For the most part, everything seems to have escaped frost.
    • The one thing that maybe got close: newly seeded alfalfa in the north — loses frost tolerance at first trifoliate.
    • A little worried about the rye crop — rye harvest began last Monday, May 9. That is WAY ahead of normal. Once it heads out, it’s incredibly frost-sensitive.
    • Wheat also way ahead of normal, but still in good shape as the head is inside the stem, lower in the canopy.
  • Winter Wheat
    • 04:13 T2 fungicides can still be applied in winter wheat in some areas. Know what stage you’re at and think about weather going forward.
    • 05:33 No more herbicides. Full stop.
    • 05:97 What is the right nozzle for fungicides on wheat crop?
    • 07:59 Stratego Pro + Buctril — will that offer long enough residual that I don’t need a T2 application?
    • 08:18 Why is there so much burn on wheat? Johnson has three suggestions, but, if you had burn, let us know, and tell us the products used, water volume and spray pressure.
    • 11:06 Sulphur deficiencies in the wheat crop. Recommending ATS at 3.5-4 gallons, but this year, it seems to be slow to correct the deficiency.
    • 12:22 Manganese deficiency correction normally a 48h thing, this year taking much longer.
  • Insects
    • 12:48 Cereal leaf beetle in traditional hot spots in Ontario.
    • 12:28 Get out there and scout for insects. It’s easy to find grubs and wireworms right now. Now is the time to do that neonic scouting — get it done.
  • Weed Control
    • 13:50 Big fleabane. Aragon label really only goes up to 20 leaf.
    • 14:20 Three day label expansion. You can spray Aragon up to 3d post-planting. Do not go beyond that.
    • 15:31 Prostrate knotweed.
    • 15:41 Scentless chamomile.
    • 16:01 Why do dandelion control in the fall?
    • 16:13 Volunteer wheat in alfalfa.
    • 16:40 Willow tree control.

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