July 26: Shorts

July 26, 2017 - Issue 18

Does rain at flowering change the sclerotinia risk and economic return from a fungicide? It could if (1) it results in a dramatic increase in yield potential, (2) if it happens at early flowering so the disease has enough time to cause yield-robbing levels of infection (and the fungicide window is still open) and (3) if moisture was sufficient earlier to promote germation of spore-producing apothecia. READ MORE

CSPW are moving east. Though not officially confirmed, cabbage seedpod weevil may have been found in canola fields in southeast Saskatchewan and southwest Manitoba. Numbers are very low and the management period is over for this year. The high risk period is at very early flowering when adults start laying eggs in developing pods. By this point in the season, most adults have died off and the late summer hatch for next years adults has yet to occur. READ MORE

Bertha armyworm numbers low. Adult traps across the Prairies are coming down this week and only a small number of traps accumulated enough adult moths to get them into “moderate” risk. Most areas are at low risk based on adult counts. Alberta map. Saskatchewan map. Manitoba counts.

Thrips. Some report seeing a lot of thrips in sweep nets, but not more curled pods than usual. READ MORE

Look for unusual and unfamiliar crop symptoms. Try to figure out the cause. The Canola Diagnostic Tool can help. Share findings with CCC agronomists or provincial oilseed specialists if you’re unsure.

Angela Brackenreed was featured in a Crop Talk Westman (stating at ~27minutes) last Wednesday. LISTEN

NDVI images of the Prairies. Look at an NVDI image of the Prairies as part of Statistics Canada’s Crop Condition Assessment Program. StatsCan also has a bunch of new infographics, including this one on agriculture in Canada.

Like weather? You can build maps on current and historical weather across Canada and the Prairies here.

Canola Watch