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Manitoba Insect & Disease Update – Week of July 7th to 11th

A Manitoba Insect and Disease Update for the week of July 7-11, 2014 has been posted at: http://www.gov.mb.ca/agriculture/crops/seasonal-reports/insect-report-archive/insect-report-2014-07-09.html

A few quick highlights from the update:

  • Leaf rust spots have been observed in fall rye as well as a few spots resembling Septoria leaf spot.
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Leaf rust spots on fall rye, 2014. Photo courtesy: Vikram Bisht, MAFRD

  • Blackleg spots can be found on canola foliage.
  • Remember to collect samples or notify someone from MAFRD if you are noticing cereal leaf beetle in cereal crops. Levels are quite low in Manitoba, however we are doing a  release of a parasitoid that is very effective at keeping cereal leaf beetle at low levels. The samples of larvae will be sent to AAFC in Lethbridge, where they will be examined for parasitoids. Areas of Manitoba where larvae are present but not already containing parasitoids will be given priority for parasitoid releases.
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Larvae of cereal leaf beetle.

Submitted by: John Gavloski, Entomologist & Vikram Bisht, Pathologist, MAFRD

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Manitoba Insect & Disease Update – Week of June 23 to 27

A Manitoba Insect and Disease Update for the week of June 23-27, 2014 has been posted at: http://www.gov.mb.ca/agriculture/crops/seasonal-reports/insect-report-archive/2014-06-24-insect-update.html

A few quick highlights from the update:

  • Fusarium head blight risk is currently high for winter wheat close to or already heading.
  • Rhizoctonia root rot is also being seen in some soybean fields.
rhizoc-root-rot-soy

Rhizoctonia root rot with reddish-brown discoloration. Photo courtesy: Vikram Bisht, MAFRD

  • Cutworms remain a concern in some areas, although levels of larvae should start to decline as they pupate.

Submitted by: John Gavloski, Entomologist & Vikram Bisht, Pathologist, MAFRD

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