Home Crop Monitoring The Agronomists, Ep 31: Albert Tenuta and Dave Hooker on corn and...

The Agronomists, Ep 31: Albert Tenuta and Dave Hooker on corn and soybean disease management

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Soybeans are starting to flower and corn is waist excessive in components of Ontario, and it’s not even July.

Crop staging, lush and humid canopies, and subject historical past all play a key position in disease growth and suppression and our friends for this episode stress the significance of genetic choice and scouting as the primary strains of defence in opposition to crop disease.

For this episode of The Agronomists, host Lyndsey Smith and her poor web connection are joined by OMAFRA’s Albert Tenuta and College of Guelph-Ridgetown Campus’ Dave Hooker.

Catch a brand new episode of The Agronomists each Monday night time at 8 pm E!

SUMMARY

  • Crops may very well be distinctive, the place Dave is (aside from slug harm on his personal farm). Albert is speaking inoculating for corn leaf blight
  • Seeing flooded fields is a little bit arduous to take
  • Graphics! Pictures!
  • Clip #1: Corn College: Tackling tar spot in Ontario
  • Getting enthusiastic about lesion shapes, solely one thing a pathologist would do
  • What share of Ontario corn may very well be affected by tar spot, vs different illnesses? Northern corn leaf blight, gray leaf spot, gibberella ear rot, and so on are nonetheless a priority!
  • Native motion of tar spot between fields, possibly a kilometre or two
  • An infection timeframe? (Take a look at the graphic with the signs to search for) It takes 4 weeks or so to ramp up and acquire inoculum load.
  • With current storms coming throughout this early within the season, is the U.S. far sufficient forward for tar spot spore motion?
  • Polycyclic snowball impact
  • Starter fertilizer going on closely? What further management needs to be employed to assist the corn crop alongside?
  • Bear in mind the host/atmosphere/pathogen triangle
  • Feeding college students questionable issues… huitlacoche
  • Clip #2: Soybean College: Fungicide functions and tank mixing methods
  • Why is it so necessary, in case you’re in a white mould scenario, that you just head into that crop and look early?
  • It’s not simply climate that drives disease, have a look at all the danger components current
  • Cover! How dense is it? For white mould, that’s a high danger issue
  • Sclerotia can stay anywheres as much as 8 years, relying on the place they exist within the soil profile
  • Genetic resistance to illnesses, and on the flip-side susceptibility
  • Fungicides will solely make a foul scenario much less dangerous, beneath sure expectations. Use different instruments too
  • There’s a fantastic line between having 20 to 30 per cent white mould in a subject, and then atmosphere kicks in and bam you’ve obtained 60 per cent
  • The fields which are planted to a extra vulnerable selection could reply higher to fungicides…
  • Sharpening pencils at each ends
  • Does a cereal rye mat cut back white mould danger in soybeans? A barrier for spore unfold. Threat for white mould is decrease in no-till
  • Clip #3: Corn College: Managing a variable crop for gibberella management
  • Western bean cutworm feeding or an infection by means of the silk channel. Even hail harm may be an an infection level for gibberella, which might trigger…
  • DON, DON DON DON, DON DON DON DON DOOOOOON
  • Fungicide timing to cut back ranges of mycotoxins
  • In case you have a whole lot of floor to cowl, it’s not a really huge spray window, how do you make a recreation plan? Excessive mycotoxins. What was discovered from 2018?
  • Northern corn leaf blight management. 50 to 60 bushel loss on a vulnerable selection. Simply by having fungicides and utilizing a stronger selection, solely a 15 bushel loss
  • Why spray pre- or at VT/R1? Management of acres is an element. What about ready until gib or ear-rot timing? Can management for different leaf illnesses, see if there’s western bean cutworm. There may be a whole lot of acres to spray although…
  • Typically herbicide/fungicide/insecticide simply received’t coincide! However by no means say by no means

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