Worldwide Beekeeping
Beekeeping => Beekeeping 101 => Topic started by: DMLinton on January 19, 2014, 10:42:57 am
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If we could put a programmable thermostat on Mother Nature, what would be the ideal, or optimal, settings for over wintering bees? I presume that there would be two settings - the first for the majority of the time that keeps the bees at the lowest activity level that does not threaten freezing and, the second, being a warmer regime periodically to permit safe cleansing flights.
It may be that my question would be better phrased to what would be the optimal hive temperature (outside of the cluster) that leads to minimal but sufficient activity and what outdoor temperature provides for safe cleansing flights?
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I have been told that they begin to break cluster at 6.1 C., "43 F." and start to fly. They are in partial cluster until 12.8 C., "55 F.", and go into full work mode.
You can make your guesses from there.
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At about -5 to -8 degrees celcius is the temperature when the hive consumes the least amount of stores.
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Ideal winter temps to over winter hives. I would set thermostat at 75-80 degrees and hope for blooming plants ;D
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I went back to my reference book. Apparently my earlier statement was wrong. Bees are most efficient at using their stores at 7 C. (45F). However a colony will use less stores at -9C (15F) than at -2C (28F). The conclusion I'd draw from this is that ideal winter temperatures would be 6 to 7 degrees, with the occasional rise to 10. But if you have to have freezing temperatures, then -8 to -10 would be better than around 0.
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Thanks, pistolpete. From reading, I was coming to the conclusion that ideal ambient hive temperatures would be around 4C or a little above with occasional excursions above 9 or 10C for cleansing flights.
The 4C to 7C I can do. The 10C for cleansing flights will be challenging although, looking back over weather records for this Winter as an example, there would have been at least one suitable day both in this month and in last month.
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per Dadants Hive and the Honey Bee
The optimum INDOOR overwintering temp is 39 degrees F
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I would think the best winter temperature would be right around 35 degrees cold enough to keep them in cluster without starting any serious brood rearing but not so cold that they can't leave the clusters to get to honey stores
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i thought i would share this article with everyone. i had the pleasure of meeting this beekeeper a few years ago. growing up and to this day, you can spot his hives all up and down the yellowstone river, and beyond, in park county, montana, and even better when your drifting the river fishing...
harvey kindall is a 4th generation beekeeper and at 70 years old, is running about 2400-2500 hives pretty much by himself. the interesting part of this article is on the last page. he built a warehouse to house up to 3000 hives, and that's where he over winters his hives and keeps it at a constant temperature of 41 degrees farenheit. very innovative and very incredible!
this document was uploaded to google drive, just click on the link to view it. if you want to download the article, you will see 'file' in the upper left hand corner, and then click on that, it will show a 'download' or 'print' option to save to your pc or print. enjoy, it's a great article!
Harvey Kindall~Livingston Montana Beekeeper (https://docs.google.com/file/d/0BwKzORXBeCX2N0c4cUltaHZXWms/edit)
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:nice: DML, thanks for starting
Have seen cleansing flights at 6C, no wind
Great link riverbee, thanks 8)
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Thanks River