Does it make sense to apply fungicide to protect against blackleg?

Top Crop Manager
Monday, 11 June 2018 | Manitoba
By Top Crop Manager
Whether or not to use fungicide at the same time as herbicide to protect from blackleg infection depends on a number of factors. The most recent disease update from Manitoba Agriculture includes questions growers should ask themselves when it comes to protecting their crop.

  • What is your rotation? A field with tight rotation (two years or less) is also higher risk for blackleg infection
  • Have you seen yield loss from blackleg in the past?
  • Has the environment been conducive for infection? The release of ascospores from overwintering bodies is favoured following a rainfall and when temperatures range from 16 to 20°c.
  • Is your crop worth it? How bad is the insect damage, do you want to be investing more money in this particular field?

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