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Date: | Sat, 1 Sep 2012 09:26:28 -0600 |
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Regarding the patterns on the boards at
> http://www.greatlakesipm.com/instrvb.pdf
and
http://www.brushymountainbeefarm.com/10-Frame-Corrugated-Sheet/productinfo/278S/
and maybe more, I see they do not seem to have patterns out to the edges
of the bottom board.
I did a quick calculation and see that any drop board which does not
count the outer one inch area around the periphery of the bottom board
is _ignoring 25% of the board area_.
I suppose that some screens are smaller than the hive and the drop area
does not always extend to the edge, but I see mites out to the edges.
If they are in a shadow area, I assume they moved a bit after dropping
and before being chilled or stuck in the Vaseline.
So, since I am counting boards today and my boards are the size of the
inside of the hive (even though there are shadows from wood parts above
I assume that all the mites that hit the screen floor eventually fall
through due to bee movement on the screen), I decided to count just the
outside 1" and then the whole board.
On the board I just did, I got 24 mites in that outer area and 110 on
the entire board, so it seems that, in this case at least, 25% of the
mites were on that 25% of the board.
What are people counting? Are the researchers ignoring the outer 1"?
Do the commercial drop boards have patterns that extend to the outer
edges of the floor? I have not seen all (any actually) of the patterned
boards on the market, so I don't know.
I ask those of you who have the commercial boards, what do you see and
how do you deal with the areas outside the patterns?
I also wonder what people have found the best coating for the boards and
the easiest way to apply it, and to remove the mites after each use.
I have been experimenting with an air nozzle, using my 120 lb/in2 air
compressor and it seems to be a solution that does not involve scraping
off the goo every time.
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