Author: sannis

Monilinia infection May 9th to 10th

There were conditions for Monilinia infection from May 9 to 10th in all fields monitored with a weather station. In the Waldoboro, West Rockport, Hope, Ellsworth and Blue Hill weather station locations, the rain started about 3pm and in Washington county about 5 to 7pm as the rain moved farther east. Some fields may have […]

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Monilinia infection May 6 to 7, cups still around

Midcoast area There were suitable conditions for Monilinia infection from May 6 to May 7 in the fields with weather stations. The rain started around 3 to 4pm on Wednesday May 6. If you applied fungicides after April 26 to 29 (10 to 7 days from this past infection period, respectively), there is a good […]

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Monilinia infection May 2nd to 3rd

Midcoast and Downeast fields All fields likely had an infection period from May 2nd to May 3rd if they had plants that had about 30 to 40% of their flower buds at F2 (crown stage). The rain started in Waldoboro on May 2nd about 9am. In Blue Hill, Ellsworth and Aurora the rain started in […]

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Monilinia infection periods April 29 to May 3

Midcoast With the warmer weather, mummy berry cups have been seen in fields in Waldoboro, West Rockport and Hope. Fields in the midcoast varied from 10 to 40% of the flower buds at F2 (crown stage). If the field had more than 30 to 40% of flower buds at F2, this would have been enough […]

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Blueberry and fungal development will speed up starting Saturday

Plant development Most plants are not ready yet. From the farthest south I have heard from, around Dresden Mills, there are some fields that are close to being ready. The phenology tracker report shows only about 1 to 8% of flower buds at F2 (crown stage and susceptible) which is what I saw in Ellsworth […]

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Continued Monilinia infections May 8, 2025

Mummy berry cups are still present in fields and the plants are still susceptible. There have been Monilinia infection conditions across Maine blueberry areas from Lincoln east through to Washington county. Two to three infection periods have occurred from May 4th to May 7th in all fields with reporting weather stations, and I expect the […]

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Monilinia infection periods possible later this week

The warm weather this past weekend and the last few days will have had buds develop and probably many fields have susceptible buds.  I have not had reports on bud development this week, so please check your field. Mummy berry cups are probably in most regions and typically continue for at least 2 weeks after […]

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Infection by Mummy berry fungus unlikely this weekend

There are mummy berry (fungus name Monilinia) pinheads, developing cups, and/or active cups being produced plots have been examined in Midcoast and Downeast blueberry fields. In the fields I have reports from, the flower buds are just starting to progress into F2 (T2) stage when they look like a crown. I suggest you wait until […]

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