Monilinia Blight Post #6 May 13

From observations today, May 13, in the Annapolis Valley, mature apothecia cups are still active (Figure 1) and blueberry varieties are entering the tight cluster stage of development (Figure 2). Based on the rain forecast for the night of Friday May 15, we will likely have another infection period. If you have not sprayed for Monilinia earlier this week, you are encouraged to spray for it before the rain. After Friday, conditions are becoming more favourable with warm and dry conditions forecasted through the weekend and early next week.      

Figure 1. Mature apothecia observed May 13

Figure 2. Blueberry in tight cluster stage observed May 13.   
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Monilinia Blight Post #5 May 7

This is a short post to confirm that we had another infection period today, Thursday May 7, from the rain we received. We will also likely have another infection period Sunday, with the rain forecasted. If you did not spray already this week before the infection period today, you can use a registered group 3 fungicide, which can provide back action up to 72-hours after an infection period. This application will also give you protection through the forecasted infection period Sunday.