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  1. #61
    Join Date
    Jan 2011
    Location
    Clackamas Oregon
    Posts
    699

    Default Re: Signs of swarm preparation?

    I have been given this web page to tell me when you should spray apples and cherries. It tells what bug is hatching by the degree days. I actually inputs weather data for you and tells what is hatching out or blooming. There is a section on the site to create your own.
    http://pnwpest.org/wea/weaexp.html
    why is it that we cannot come up with an amount of degree days to determine swarming?
    “Why do we fall, sir? So that we might learn to pick ourselves up” Alfred Pennyworth Batman Begins (2005)

  2. #62
    Join Date
    Jan 2011
    Location
    Clackamas Oregon
    Posts
    699

    Default Re: Signs of swarm preparation?

    Pulling up records for my swarming: 2011, June 12, 18, 26: 2012 July14: 2013 April 25 and 27. Now in 2013 records also show a record heat wave with 75 and sun for Easter. Big red plum, Peaches, and cherries were 16 days early. It does not compute to an April swarm date rather than a June or July date unless the degree days are considered. Since they use that data for bug hatch for fruit trees why not bees? BTW our major flow is early fruit in April and the entire country is blackberries (wild Himalayan) in Mid to end of June. We have nothing after that worth speaking of.
    “Why do we fall, sir? So that we might learn to pick ourselves up” Alfred Pennyworth Batman Begins (2005)

  3. #63
    Join Date
    Mar 2011
    Location
    Utica, NY
    Posts
    9,033

    Default Re: Signs of swarm preparation?

    Quote Originally Posted by minz View Post
    why is it that we cannot come up with an amount of degree days to determine swarming?
    I think it is way better then a calendar day but degree days are based on air temp. The air has no hysteresis. It changes with the wind. The ground temperature changes gradually and can increase from sun exposure while the air is cold. I see snow melting on the parking lot or even the grass while the air temp is 5 or so degrees below freezing. I think if you did nothing more than stick a thermometer in the ground about 6 inches and recorded the temp you would have a better indicator.
    Brian Cardinal
    Zone 5a, Practicing non-intervention beekeeping

  4. #64
    Join Date
    Sep 2011
    Location
    Reno, NV
    Posts
    2,839

    Default Re: Signs of swarm preparation?

    I just looked up my area in the degree day data. Not sure i am reading it accurately but it is showing for this date last year we where running 21 days ahead of the 30 year average. My personal observations put it at that to 30 days ahead. Depending on what I was observing. Elm tees dropped their seed 3 weeks earlier than normal for example.

    The station I am looking at is only a couple blocks from my house. I actually know where this station physically is.

    It is showing we are currently 27 days ahead of 2013 and 60 days ahead of the 30 year average. Now that sound more accurate to me. I woudl agree we are getting weather more typical of March Than January for this area. It also means my bees could be building up if they have anything not build up on. I see no sign anything is budding or blooming yet.

    We are very much in early spring type weather here and it has been holding for several weeks so far.

    It is saying we area at 133 degree days. not at all sure what that means.
    Stand for what you believe, even if you stand alone.

  5. #65
    Join Date
    Dec 2011
    Location
    Victoria, Australia
    Posts
    660

    Default Re: Signs of swarm preparation?

    Thanks Mike and David and others for you replies. Now to digest it all.

    Interesting, Swarm season seems to coinside with Apples flowering here as well...

    (But one Of my apple trees seemed to flower twice this year. The weather has been a bit strange. Now we've just had a heatwave after a cold and wet spring.)
    Last edited by MattDavey; 01-19-2014 at 05:54 AM.

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