Wheat Pete's Word, May 9: Thin wheat, cereal leaf beetles, and the weed that keeps resisting


In today’s episode of Wheat Pete’s Word, resident agronomist and host Peter Johnson talks crop progress (with some surprising comparisons to last year); thin wheat; no-no’s in herbicide application; water jet technology; and, a scary new finding of herbicide resistance in the province.

Find a summary of all of today’s show topics and times below the audio.

Have a question you’d like Johnson to address? Or some yield results to send in? Leave him a message at 1-888-746-3311, send him a tweet (@wheatpete), or email him at [email protected].


  • 00:35 – It’s warm and we’re flying! A look at the year so far (including some incredible crop heat units).
  • 02:00 – Spotty rain in Ontario over the weekend. If you haven’t turned a wheel yet, take a breath! There’s time.
  • 02:50 – A Run for 101. The importance of challenging ourselves.
  • 04:00 – Some talk on herbicides and cover crops. Please, no incorportation of Dicamba or 2,4-D.
  • 05:40 – Cereal rye into soybeans. Do I spray now, before cover crop starts to grow, or leave it to green up first?
  • 06:25 – Updates on winter wheat variability across the province.
  • 07:15 – If the wheat crop is two weeks behind, will it be two weeks longer to harvest?
  • 07:55 – Cereal leaf beetles being found in the wheat crop! Scout, scout, scout!
  • 08:20 – Decision time on thin wheat. When to take it out, when to leave it be.
  • 09:25 – Should I just throw fungicide into the tank when we are spraying herbicides, even though disease pressure isn’t there yet?
  • 10:20 – Do we need to go to higher rates of sulphur?
  •  10:55 – If I put on 10lb sulphur (ATS) with 50 lb nitrogen in first pass, do I need to dilute that?
  • 11:55 – Red clover going on, but a problem with fleabane. What to do for herbicides?
  • 12:27 – Managing red clover for seed production.
  • 13:30 – What is water jet technology?
  • 14:35 – Group 1 resistant crabgrass — do I assume, or test?
  • 15:13 – Alert! Alert! Alert! Finding waterhemp with resistance to Group 2, 5, 9, and 14 chemistries.

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