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I have long been of the opinion that
if work were such a splendid thing
the rich would have kept more of it for themselves.
-- Bruce Grocott --
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Another day of working on the
curriculum.
I was about burned out this
afternoon and ready for a break, when Medhat called and said he was coming by
with some Apistan®. Apparently the bee samples we took the other day
have shown increased levels of varroa since the treatment. When we
considered the data, we discovered that the hives (except for one) that have
higher levels are in expanded polystyrene (Styrofoam) boxes.
Maybe this is a coincidence, and
maybe not, but it is not a huge stretch to conclude -- tentatively -- that these
hives raise brood earlier and later than the others, and thus incubate more
varroa. Also we can conclude that these hives still had lots of brood when
Medhat treated them, and that the increase in mite population had come out with
emerging bees since the treatment! We have no measure of the other hives
that had low levels, since we did not sample them. I suppose we could,
now, but we would not be able to compare, except roughly, to the ones we sampled
a second time a while ago (in the red cells below), since time has passed.
I present here the same
chart that I
presented earlier, this time marking the polystyrene hives and showing the
increase in mite load. (see red cells). The wooden hives have not yet been
wrapped.
I have always been of the opinion
that one should wait until mid-October to wrap, and that the bees need to feel
some cool weather and cut back. Others think that early wrapping is best.
One thing for sure; I can see that people who rushed to apply oxalic before
November are making a mistake. The broodless period does not start until
about then. If what we think we see is true, hives that are warm --
insulated like the styro hives -- raise brood longer and need to be treated even
later. We see bees cleaning floors often in December and January, and for
oxalic evaporation, temps around 2 to 5 degrees C are ideal. We gets lots
of days like that in Winter. Seems to me that there is no rush.
Comments?
Hive
Number |
Weight of bee sample (g) |
No. of Bees |
No. of Mites |
Percent |
Hive Material &
Notes
#s in red cells are
recent counts |
|
A-1 |
69.063 |
329 |
2 |
0.61% |
Wood - Package Bees Spring 2004 |
|
A-2 |
59.43 |
283 |
2 |
0.71% |
Wood - Package Bees Spring 2004 |
|
A-3 |
64.701 |
308 |
4 |
1.30% |
Wood - Package Bees Spring 2004 |
|
A-4 |
68.139 |
324 |
1 |
0.31% |
Wood - Package Bees Spring 2004 |
|
A-5 |
65.232 |
311 |
1 |
0.32% |
Wood - Package Bees Spring 2004 |
|
A-6 |
64.575 |
308 |
1 |
0.32% |
Wood - Package Bees Spring 2004 |
|
A-7 |
63.083 |
300 |
2 |
0.67% |
Wood - Package Bees Spring 2004 |
|
A-8 |
55.459 |
264 |
0 |
0.00% |
Wood - Package Bees Spring 2004 |
|
A-9 |
59.442 |
283 |
1 |
0.35% |
Wood - Package Bees Spring 2004 |
|
A-10 |
55.82 |
266 |
2 |
0.75% |
Wood - Package Bees Spring 2004 |
|
A-11 |
65.729 |
313 |
0 |
0.00% |
Wood - Package Bees Spring 2004 |
|
A-2-1 |
61.014 |
291 |
1 |
0.34% |
Wood - Wintered |
|
A-2-2 |
38.698 |
184 |
3 |
1.63% |
Wood - Wintered |
|
A-2-3 |
51.953 |
247 |
12 |
4.86% |
9.65% |
Styrofoam Wintered |
|
A-2-4 |
68.139 |
324 |
57 |
17.59% |
21.35% |
Styrofoam Wintered |
|
A-2-5 |
43.991 |
209 |
17 |
8.13% |
83.60% |
Styrofoam Wintered |
|
A-2-6 |
56.875 |
271 |
97 |
35.79% |
27.89% |
Styrofoam Wintered |
|
A-2-7 |
56.296 |
268 |
16 |
5.97% |
17.79% |
Styrofoam Wintered |
|
A-2-8 |
68.538 |
326 |
55 |
16.87% |
27.70% |
Styrofoam Wintered |
|
A-2-9 |
56.003 |
267 |
22 |
8.24% |
22.01% |
Styrofoam Wintered |
|
A-2-10 |
67.02 |
319 |
4 |
1.25% |
|
Styrofoam Wintered |
|
A-2-11 |
60.453 |
288 |
7 |
2.43% |
|
Styrofoam Wintered |
|
A-2-13 |
50.143 |
239 |
15 |
6.28% |
6.635% |
Wood - Wintered |
|
A-2-14 |
60.693 |
289 |
3 |
1.04% |
Wood - Wintered |
|
A-2-15 |
70.507 |
336 |
2 |
0.60% |
Wood - Wintered |
|
A-3-1 |
67.596 |
322 |
0 |
0.00% |
Wood - Wintered |
|
A-3-2 |
62.358 |
297 |
0 |
0.00% |
Wood - Wintered |
|
A-3-3 |
62.112 |
296 |
5 |
1.69% |
Wood - Wintered |
|
A-3-4 |
66.046 |
315 |
1 |
0.32% |
Wood - Wintered |
|
A-3-5 |
60.889 |
290 |
0 |
0.00% |
Wood - Wintered |
|
A-3-6 |
69.717 |
332 |
1 |
0.30% |
Wood - Wintered |
| Key:
|
Australian Packages
Spring 2004 |
Wintered
High mite load |
Wintered - Last
Apistan - Spring 2003 |
The hives
in grey boxes are this year's Australian packages and have never been
treated.
Those in pink are overwintered hives that have not been
treated since the spring before this past one. At that time, they got
one strip of Apistan®.
Today : Sunny with
cloudy periods. Wind becoming south 20 km/h this morning. High 7. /
Tonight : Cloudy periods. Low minus 2. /
Normals for the period : Low minus 5. High 8.
I updated up
my formic and oxalic
page a bit. Anyone have any good pages that should be mentioned there? Write me,
and let me know.
|
A question
via the web form...
I read your web site about infestation
levels compared between wood and styro hives. I wonder what is the
source of the statement "for oxalic evaporation, temps around 2 to 5
degrees C are ideal". I use this product so I am interested in it. I
also have wood and styro hives, wrapped early last 2 years but latter
this year (mid-October I think).
From
http://www.mellifera.de , (specifically
http://www.mellifera.de/engl2.htm )
"The apiarists recorded the temperature
during the treatments. Thus, it could be determined that the efficacy of
the vaporisation of oxalic acid is almost the same for temperatures
between 2 and 16 °C (fig. 8). This means that with this vaporisation
method, the apiarist is widely independent of the weather, a great
advantage over the spraying and trickling method with oxalic acid. In
cold months too, it is possible to start treatment early in the morning.
Within one day, an apiarist can treat 70 to 100 colonies perfectly with
the vaporiser. With large apiaries, one person can use three vaporisers
at the same time and can, therefore, carry out more treatments. The
colonies do not have to be opened and the top does not have to be
removed".
|
Today is Chris' 30th birthday, so El & I went to
Chris and Jeans' for supper.
Another day working on the curriculum. I
got a lot accomplished.
Time to start thinking about the
upcoming 2005 US national conventions.
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AHPA
Tucson, AZ |
ABF
Reno, NV |
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home | diary

The above info, formatted
for printing
Today : Sunny. High 5. /
Tonight : Clear. Wind west 20 km/h becoming light this evening. Low minus 11.
/
Normals for the period : Low minus 6. High 7.
Another day at the desk.
We've been discussing oxalic treatments quite a
bit lately, and some of us think that the evaporation methods show the most
promise. Some consider manual methods like the Varrox® evaporator to be
too slow and difficult to use, and have built devices to speed up application.
Of course, we are all wondering what works best, and if there are possibilities
of damaging the bees.

On
the left is an oxalic machine in action.
Click the picture to enlarge |
|
|
Here are a couple of very good
oxalic links:
Also check out
selected topics |
Today : Sunny with cloudy
periods. Wind southwest 20 km/h. High 12. /
Tonight : A few clouds. Wind becoming south 20 km/h overnight. Low minus 2. /
Normals for the period : Low minus 6. High 6.
Another day of working on the curriculum.
It should actually be finished by now, but, as a project like this gets bigger,
progress slows, since remembering what already has been covered and exactly
where it is gets difficult. MS Word is good for this kind of work and the
advanced features that most of us never use come in handy.
Apparently MS Publisher is used in the
final publication of these curricula, not Word, and apparently, although
Publisher can read MS Word files, other MS programs cannot read Publisher's
native file format. That has made getting access to some of the material
slow, as well. I've considered purchasing a copy of Publisher, but have
not been sure if it is worth it.
We went to the Mill for supper. It turned
out that P-Ss have Publisher 2002 on their computer, and I just happened to have
a copy of my work on the 256 MB data key in my pocket, so I loaded it up.
I played with it for a while, but came to the conclusion that Publisher is
crippled - compared to Word.
Today : Sunny with cloudy
periods. Wind becoming southwest 30 km/h gusting to 50 this morning. High 14.
/ Tonight : Cloudy periods. Wind southwest 30 km/h gusting to 50 becoming light
this evening. Low minus 4. /
Normals for the period : Low minus 6. High 6.
Another day of writing and correcting. I
want to get this curriculum job sewed up by Sunday night, when I plan to be at
the Fantasyland Hotel. The
ABA convention
starts Monday morning, and I see that Monday breakfast is included.
I added a picture to the oxalic links on
Thursday's comments (above).
Today : Cloudy with sunny
periods. 40 percent chance of flurries this morning. High 4 with temperature
falling to minus 3 this afternoon. /
Tonight : Cloudy. Low minus 8. / /
Normals for the period : Low minus 6. High 6.
The
ABA convention
starts tomorrow. Click
here for some general
Edmonton and West Edmonton Mall info.
Don't forget the US meetings coming up in January.
I planned to work on the curriculum
all morning and head up to the convention mid-afternoon. There are some loose
ends to tie up and I figured to get quite a bit done. Yesterday was quite
productive. That didn't work out. First, Bert came over for a beehive wrap, then
Grant and Shirley showed up to talk furnaces. I visited a bit, then got back to
work.
While I was working, rain and snow
starting to fall, and wondered if I should head out early. I checked the
forecasts, and they seemed to indicate that, although the South was getting
weather warnings, my route to the North would be okay, and I stuck to my plan. I
was just finishing up, when MS Word aborted a save and I lost the day's work,
since it was saving over top of the previous copy. I keep quite a series of
backups, and am glad I did, but I did lose a few hours. Not my best day.
I left at 3 PM drove to Edmonton. I
was wary about the driving conditions and had remarked, before leaving, that the
bridges might be slippery. Sure enough, the one at Equity was, and the car
wandered a bit, but straightened out. The Merc is rear wheel drive, and the van
is FWD, so I have to remember which I'm driving. The response to a skid is
different - opposite - between RWD and FWD. Along the way there were cars in the
ditch and ambulances and police everywhere. I guess I should have driven up in
the morning.
Anyhow, I arrived and settled in.
Turns out there is free high speed here, but it is unencrypted. I wonder how big
a risk that is.
| Hello,
I am a commercial beek in
New Zealand operating 1400 hives in the South Island.
I have an 18 year old son
keen to further his experiences in the beekeeping fraternity. He
is investigating the possibility of going to Canada or America
next year to 'work a season or two'.
I understand that you are
now retired - didn't think beeks did that! I assume you will
know many beekeepers in your part of the world who employ guys
by the season. As in this part of the world I expect some are
great employers whilst others may not be quite so good.
I am wondering if you would
be in a position to suggest some likely businesses for me to
make contact with. It is a little difficult from this part of
the globe to seek the 'better' employers. Canada seems to be an
attraction for young Kiwi beekeepers wanting to spread their
wings.
Will be waiting your reply
with interest.
I enjoy your comments on
BEE-L. Seems there are quite a few Hobbyists prepared to share
their wisdom.
Kind regards
South Island
New Zealand
Write me if
you are interested and I'll pass your request to him |
Today : Cloudy. 30
percent chance of flurries this morning. Wind becoming southeast 20 km/h
this morning. High 2. /
Tonight : Clearing this evening. Low minus 8. /
Normals for the period : Low minus 7. High plus 5.
The convention is well-attended, and
it is good to see everyone.
I'll be writing something on this
when I have the time.
Today: Sunny with
cloudy periods. High 12. /
Tonight : Cloudy periods. Wind southwest 20 km/h becoming light this evening.
Low minus 2. /
Normals for the period : Low minus 7. High plus 5.
Tuesday : A mix of sun and cloud. 30 percent chance of flurries or rain showers.
High plus 4.
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