Mummy Berry Forecast Post #4– May 5th, 2023

Friday, May 5, 2023

Early emerged apothecia were still very active when checked this morning and there has been many more that have emerged over the last week.  I have not noted any that have passed maturity up to this point.  With the dry north wind blowing all day and a forecast of dry weather i expect them to dry quickly.  In the mean time growers should make sure they are covered with fungicide during wet events.  with warming temperature infection will take much less time. 


Figure 1 above: Active Apothecia taken morning May 5th 

Early varieties continued to advance well this week and i expect to bee some bloom late next week.   

Burlington and Draper 40% at the F2 stage. As a reminder, these observations are based on plantings in the Berwick- Aylesford area on the valley floor.

If varieties achieved 40% F2 stage this week and a wetting period is forecast they should be covered with a fungicde giving them 7 days protection.  

Very early varieties that have been previously sprayed for Monilinia blight are approaching the end of their window of protection and may need to be resprayed, if wet weather is forecast.   

Applications for Mummy berry/Monilinia control should be timed when blueberry buds are at least at 40% F2 stage and before the next forecasted wet period.

Rain interval for most of these products is one hour or when dry.