Canola Watch – May 24, 2018

May 24, 2018

CANOLA WATCH QUIZ – CUTWORM

Test your cutworm knowledge with these four questions, including a “dry soils” angle.

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MAP OF THE WEEK – WIND TRAJECTORIES

Of particular interest are those trajectories that, prior to their arrival in Canada, originated over northwestern and southern USA and Mexico – anywhere diamondback moth populations overwinter and adults are actively migrating.

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START SCOUTING THE WEEK AFTER SEEDING

Start scouting around the time when emergence should occur. Normally by late May, warm soils, decent moisture and 1” seeding depth should produce emergence be about a week after seeding. However, dry conditions can delay emergence.

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QUICK NOTE ON SPRAYING FLEA BEETLES IN HOT WEATHER

Synthetic pyrethroids (Decis, Matador/Silencer, for examples) benefit from late-day spraying because they should be applied when temperatures are below 25°C.

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TOP 10 WEED SPRAYING TOPICS

We dug into our vast vault of Canola Watch articles to put together this Top 10 list.

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BROMOXYNIL NOT ON DUST-SENSITIVE LIST

In our article , which was posted last week, we said three herbicide products are very dust-sensitive: glyphosate, diquat (Reglone and others) and bromoxynil. Bromoxynil should not have been on that list. We fixed it soon after posting, but just in case you only read the original article, please note this error. Only two herbicides are very dust sensitive: glyphosate and diquat.

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A QUESTION FOR YOU, THE READER

How long can canola seed sit in dry dusty soil before it dies or goes dormant? We haven’t found an answer yet. We assume, if conditions are dry, that it could sit there inactive until rain finally moistens the soil, but we’re not sure. Do you have any experience that might provide some insight?

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COMING EVENTS

Saskatchewan canolaPALOOZA June 25 AAFC Saskatoon Research Station. Information and registration Alberta canolaPALOOZA June 27 AAFC Lacombe Research and Development Centre Information and registration Watch a video on the 2017 Alberta event Manitoba CROPS-A-PALOOZA July 25 AAFC Portage la Prairie Research Station Information and registration Watch a video on the 2017 Manitoba event International Clubroot […]

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RESEEDING AND DRY CONDITIONS

Wind losses, intense flea beetle feeding and slow emergence – each made worse by dry conditions – have some farmers wondering about reseeding. Keeping a thin stand is often the better option, but this article will help with the decision.

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HOW DEEP IS TOO DEEP TO SEED CANOLA?

1.5” may be as deep as you want to go. If moisture is at 3”, for example, that is a long way for a small canola seedling to stretch.

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