• Issues of the week: June 30, 2010 — Lygus spraying starts in the Peace, cabbage seedpod weevil spraying starts in the southwestern Prairie, and we’re all on diamondback moth alert. Scout damage closely and spray only when necessary. With so many potential insect threats, multiple sprays are probably not economical. Oh, and don’t forget about……
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  • Peace (B.C. and Alberta): Dry and hot conditions the past week add to drought stress. South and central Peace regions really need rain. Most canola fields are at bolting to first flower stages. Alberta: Thunderstorms brought variable rain in the past week, ranging from 4” for some to less than a tenth for others. Hail……
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  • Southern Applied Research Association at Lethbridge offers its one-day Diagnostic Field School July 6, 7 and 8. The agenda includes CCC senior agronomy specialist Jim Bessel explaining how to minimize combine losses. For more information, call 403-381-5118 or emailsara.research@connectcomm.ca. The Crop Diagnostic School in Carman, Manitoba will run July 6 to 9 and July 12……
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  •   Some Peace fields have 4-5 adults per sweep, prompting many farmers to spray at the bud stage. This is earlier than normally recommended, but with drought stress, canola may not be able to compensate for bud losses. Scout for signs of damage. Look for penetration marks at the base of the bud where adult……
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  •   Spraying to prevent sclerotinia stem rot has started in Manitoba and many canola fields across the Prairies are coming into the spray window — 20% to 50% bloom. With good moisture and high humidity, growers with canola at early flower should use the checklist below to assess their sclerotinia stem rot risk. Fields scoring……
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  •   Blackleg presence is higher than usual on canola in Manitoba and southeastern Saskatchewan. If you see grey lesions with black picnidia (peppery spots) on leaves, monitor the field. The variety may have adult resistance, so early infection on the leaves may not result in severe stem damage. Spraying is not likely economical. Blackleg can……
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  • Issues of the week June 23, 2010 — Weed and insect control are priorities. We have tips on late-stage herbicide applications, lygus bug scouting and fertilizer topdress for recovered fields. Earliest crops have started flowering, which is time to assess the sclerotinia risk…
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  • Peace (B.C. and Alberta): With regular rains and warm days in the north around Manning and La Crete, canola here looks better than in any other part of the region. Everywhere else needs rain. Crops range from 5-leaf to early flowering. Alberta: Flooding in Medicine Hat made national headlines, but moisture is just right for……
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  • Heat revives flea beetles. After a few weeks with no flea beetle pressure, they have shown up again with the heat. Crop seeded recently will still have seed treatment protection, but for crop seeded weeks ago that have been slow to establish, scout closely. Cutworms are still feeding and damage is the most widespread we’ve……
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