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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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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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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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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I suspect there are mummy berry cups across all blueberry areas, unless it is a very late field. The flower buds also seem to be at least 40% F2 or past that in development. The rain during the last two days produced conditions to cause Monilinia infections from Friday May 2nd evening to May 4th […]
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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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Mummy berry cups have dried up and will be gone in the Midcoast areas. In most Downeast areas the cups have dried up and are almost gone. Cups that were seen in Blueberry Hill Farm in Jonesboro, May 10th, are dried up and new pinheads have not been seen. With this past warm weather, the […]
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Mummy berry season Mummy berry season is starting to end in some areas. If the cups are finished in your area, there is no advantage for spraying fungicides for mummy berry control at this time. The secondary Monilinia spores on the dead tissues (mummy berry symptoms) are carried by pollinators to the healthy flowers to […]
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All fields with weather stations had conditions for a Monilinia infection period overnight from May 6th to May 7th. The fog started in the evening from about 6:30 to 8:30pm and continued until morning. I do have reports of cups still present in the Midcoast and Downeast so there is a good chance this weather […]
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The rain caused conditions for Monilinia infection in most fields with weather stations from May 2 to the morning of May 6th. Depending upon the field, there were one to four infection periods in this stretch of days. If you applied fungicides on or after 7 to 10 days before these infection periods (April 22 […]
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