7th Monilinia Update for Nova Scotia

Tuesday, May 15, 2018

Very few areas in Nova Scotia are not at the 40-50% F2/V2 stage.  High areas in Cape Breton are still not quite at threshold.

There is still infection risk for most sites in Nova Scotia, for Monilinia. We are still seeing mature cups, but given the dry windy weather we have been having, risk is starting to decrease especially in the early developing areas.

That being said, we are expecting an infection period Tuesday evening into Wednesday, depending where in the province you are located. Monitor your weather forecasts closely!

Above is the infection severity chart.  Wetness duration and temperature are the main factors to determine and infection period.  As temperature increases, wetness duration required for infection decreases.

As the season progresses, we start to see spore production reduce from the apothecia cups, however, as plants develop and floral buds and vegetative buds develop, they take longer to dry.

If a control product has not been applied and your buds are beyond the 40-50% F2/V2 stage, a control should be considered prior to the wet period or soon after.

The next update will be late in the day on Friday, May 18th.