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Sunday November 10th, 2002
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I booted the office Me machine and the problem
is back. It seems to be time-related. I'm considering removing
MSIE6.
I read your diary
with interest and checked out the link to the oxalic acid evaporation
system. I have been quite interested in trying it myself but when I
requested info from the producer of the equipment in B.C. during the summer
he informed me that it was not approved for use in Canada so he couldn't
sell me an evaporator. Has there been any change in the Canadian stance on
oxalic acid or is there any movement in that direction ?
I'm not sure what the actual situation is
here in Canada. It does, indeed, seem that we are free to do, and
to discuss, anything we care to. Our authorities seem to have
enough respect for well-informed beekeepers that they allow quite a lot
of latitude. After all, the beekeeper is the guy who loses it all
if he/she contaminates honey, and honey testing is becoming very
widespread and getting very, very sensitive. We saw the results of
contamination when loads from Saskatchewan were dumped years ago due to
sulfathiazole residues around 1ppm.
There are quite a few products and
practices that are being promoted publicly which do not have official
sanction, but which are displayed in public at conventions, in the
presence of provincial apiarists and Canadian Food Inspection Agency
(CFIA) people. I am sure that the officials think deeply about each
of these products and practices. If they see potential hazards,
they speak up, but otherwise, they just watch.
The USA is a an exception in the Western
world inasmuch as social pressure and government agencies place tight
limits on free speech and action. Even speaking about an illegal or
unapproved treatment in the USA can result in prosecution (See Caldera's
experience with the USDA a few years back). In contrast to
the US, I sometimes read the
Belgian list, (archives -- in French)
and am shocked with the pesticide and chemical use that is openly
discussed and practiced in Europe. Things in Canada seem to follow
the trends in the USA, and I see lately that injury lawyers -- something
we never saw here before -- are suddenly breeding like fleas. From
that, I can only guess that within a few years, people will become as
fearful, and our freedoms will be as restricted as they are in the US.
My guess is that the Canadian equipment producer is more afraid of a
civil suit than of legal action by regulators. He'd feel safer if
his method were endorsed by authorities.
So, as far as using oxalic in Canada is
concerned, a word with local authorities like a
provincial
apiculturalist beforehand is wise, for perspective. CFIA is the
wildcard in the whole thing, since they seem to be a rudderless ship,
bashing into things here and there, but with no firm course plotted, and
no one clearly at the helm. So far, they have acted with restraint,
mainly warning about the use of unapproved drugs in hives and recalling
the Chinese honey when chloramphenicol was found (not by them BTW, but by
a packer who was monitoring the competition), and working towards a HACCP
system industry-wide.
If there are no residues, and if our
customers in Europe and the USA do not object -- as some currently do
about benzaldehyde (a food ingredient) and butyric acid (another food
ingredient) it seems to me that we will be able to use these
organic acid varroa control methods. There has been no complaint
whatsoever -- so far -- about formic acid (another natural ingredient in
honey and food), and for what it is worth, oxalic acid apparently
decomposes into formic acid, CO and water. Oxalic is also found
naturally in foods in far greater amounts than would likely to be a
result of even careless fumigation. Moreover, in the European
studies, oxalic levels in the honey in the brood nest were actually lower
after fumigation than before treatment.
|
I removed MSIE6 and played around with
selective boot and the boot problem seemed to be solved. I restarted the
machine several times and was satisfied that the problem was licked.
I then installed Netbui on the XP machine and
it suddenly noticed the Me machine which had been connected all along by
Ethernet, but invisible. The notebook, connected by parallel cable also
came into view -- more or less. I did the updates to XP from the web and left
that download in progress while El and I went to the Mill for supper. On
the way, we saw that Wendy was at the Global Grounds Internet Cafe she is
opening in Linden, and we stopped in to show them
the website I gave her as an
opening present. The picture is from a Halloween party, and I think she
will change it soon.
When I got home, I started to copy the drives
from the Me machine to the XP unit to create a backup and to start my
migration. It is a long process, and I went to bed with it running.
I awoke at one-0-five AM to hear the printer reset, and realized that we had a
power bump. I hoped that this would not damage anything. It shut
down the machines in mid-transfer, but things seemed okay.
Today..Morning fog
patches otherwise cloudy with 30 percent chance of flurries. Wind light. High
minus 3.
Tonight..Partly cloudy. Wind west 20 km/h. Low minus 5.
Normals for the period..Low minus 9. High 3.
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Monday November 11th, 2002
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Remembrance Day
I started the Me machine to find that
it was once again hanging on boot-up, but also discovered that I
could reach it by the network -- even if explorer was not running. I
turned off the monitor and resumed the work of configuring the XP machine and
transferring files. I am looking forward to doing a clean install on the
Me. Haven't decided whether to use 98SE or Me or XP. Or FreeBSD? I
have them all here. Maybe Slackware? Probably not. The
machine will be for Ellen, and Windoze is easier for me to support.
I think I like this new machine, and,
surprise, surprise, I like XP! Come to think of it, this machine has not
hung even once, in all the time I've played with it, and I seem to be able to
find my way around in it just fine. I'm even getting to like the look and
feel. This 1800+ runs just fine. It's fast.
Wendy was not having any such luck with her two
new machines at Global Grounds.
The HPs were similar in specs to this Machine, but really slow compared to this
box. She has them hooked up to 2-way satellite, and the main feature of
the shop -- other than high-test special coffees and sweet desserts -- is
high-speed access out here in the boonies where 56K is the normal speed limit.
Johnny was working on those units and we expect they will be lightning quick
when he is done.
Ellen and I drove to Red Deer today to
meet Mom and Jean and Chris. We had lunch, shopped a bit and came home.
Mom will be here until Thursday.
Today..Mainly sunny.
Wind west 20 km/h. High 6.
Tonight..Mainly clear. Wind west 20 km/h. Low minus 2.
Normals for the period..Low minus 9. High 3.
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Tuesday November 12th, 2002
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Paulo
and Dave are going wrapping. We have eight yards to go. For some
reason, we are moving more slowly this year than last. I like to think we
are doing a better job, but partly it is the ice on the floors that makes it
hard to put on the entrance reducers. Dennis is un-installing the
extractors for winter storage so we can set up a woodworking shop for the
winter.
I spent the afternoon
paying bills and further configuring this new machine. It always takes a
while to get things just right. Often I don't realize what I need to do
until I start a task and find that some little thing needs doing -- like
downloading the 50+ megs of the latest
OpenOffice.org office suite. I have Microsoft Office 2000 right here
on CD, but hate to use it. I'll install it, but not until I have to.
I am
pleasantly surprised by Win XP. It is rock solid, and seems to allocate
cycles well to running aps compared to previous Windows versions. I lost
my download connection when I was about 90% finished downloading 50 meg file --
after 6 hours or so of waiting on a 26.6 connection. Imagine my relief
when I discovered that XP was smart enough to resume where it left off, rather
than starting all over, as Me used to do. I've now pulled all my user
files off the Me machine and find I am ready to wipe it, and to reinstall
Windows. No rush, but it is surprising when that realization hits.
BTW, if you have written
me in the last while -- or before -- and I have not gotten back to you, please
realize that my email is now scattered over three machines and some gets lost.
Besides, with all the SPAM coming in, I nuke anything that does not come from
someone I recognize or have a subject that I can see is personal.
If,
for example, you sent me a message with "Make a million dollars while
sitting in your bathtub 5g82" or some such thing, chances are I did not
read it. If you sent me an attachment, that might have been eaten by my
anti-virus. Please try again with a subject line that says something
like:
Subject: This is about honey bees
Maybe I was too hasty,
and a little heavy on my bragging about the freedom we enjoy in Canada. A
Canadian reader wrote to say that he had called the maker of the evaporator in
British Columbia and been told that he could not buy one; it was not approved
for sale for use in Canada. A US reader wrote to say he obtained one,
apparently without difficulty.
I phoned the maker of the
device, and here's what Heinz said in response to my query:
Not long after my site
went up, I was visited by (a CFIA employee). He had my site printed out and
was complaining that I was selling Oxalic Acid. After I told him that I
wasn't selling Oxalic Acid and he reviewed the site and saw that I was not
offering Oxalic Acid for sale, he then said that I couldn't sell the
Vaporizer in Canada either, as the treatment is not registered.
I informed him that if I
had to remove the site, it would be replaced by one of my distributors in
Germany as it is legal there.
I asked him for specific
instructions as to what he wanted removed from my site and a few days later
he faxed me the required alterations, which basically consisted of removing
all the Canadian references and including a disclaimer stating that the
Oxalic Acid Vaporizer is not registered for use in Canada. He threatened
legal action if I did not make the changes.
At first, when I heard
this, I was annoyed and thought that CFIA was out of line, but after thinking
it over, I decided that they had a valid point and that the solution was a --
typically Canadian -- reasonable compromise.
I also then recalled that
the promoter of the device had been SPAMming every beekeeper on the 'net, and
bee-related mailing lists where he could, with claims that this was The
Answer to varroa. The promoter had annoyed me so much at that
time, I had thought I'd NEVER deal with him. I can therefore
understand why CFIA had to react somehow to moderate such in-your-face
claims for a product and method that -- even if it is harmless and effective --
is yet unproven in Canada. After mulling it over, I now consider their
response moderate and reasonable. I've also since mellowed, and decided
that -- regardless of his obnoxious approach to marketing -- the idea he
is promoting has merit and I'll keep following his techniques, as well as those
of other contributors.
A reader of these pages
wrote and told me that he enquired of his provincial apiarist about approval
for oxalic and was told "in the next year or so"
He says, "Whenever
I hear "in the next year or so", from anyone connected to government I find
it difficult to be optimistic ! It doesn't sound as if they think it
is a very high priority item".
Nonetheless, I expect
that, seeing as there are apparently no residues, and that we are all seeking
milder and less toxic solutions, that we may well see some action, as well as
tacit acceptance of responsible beekeepers experimenting with these methods.
BTW, Cor called and
told me that the slides are on their way here, so when the CD arrives, I'll be
sure to post the slides here on this site.
And...
speaking of sites, honeybeeworld.com
is live and active. It will be the future home of this diary and all my
other material. One day soon, I expect that this current URL will pass
into history.
|
Having said all
this, evaporating oxalic is not the silver bullet. It is just
one more weapon in the arsenal, a good one, it appears. There are some
tales in Europe of failures with OA -- mostly when used with drizzling or
spraying -- two methods that do not appeal to me even a little bit (see the
links below). It seems no method is without at least some failures. |
|
Allen's
Links
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Today..Becoming cloudy
this morning. Wind light. High zero.
Tonight..Clearing. Wind southwest 20 km/h. Low zero.
Normals for the period..Low minus 9. High 3.
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Wednesday November 13th, 2002
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Paulo and Dave went wrapping. Dennis did
cleanup.
Ellen, mom and I went to
Rosebud for lunch and the theatre matinee. We saw
Caribou Magi and enjoyed it thoroughly.
I'm still getting computers and websites
straightened out. I see that Windows XP is still no *nix. XP
gets slow and flaky -- just like any Windows I've ever used -- after installs
and uninstalls, and needs rebooting. I noticed that the icons got
corrupted in one situation and that was only fixed by a reboot.
|
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Links
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Today..A mix of sun
and cloud. Wind west 20 km/h. High 9.
Tonight..Mainly clear. Wind west 20. Low minus 1.
Normals for the period..Low minus 9. High 3.
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Thursday November 14th, 2002
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Dennis and I each drove a load of granulated
supers to Meijers' in the morning. We've had hundreds of supers full of
granulation ever since we were on pollination, and we never seem to get them
entirely cleaned out. We decided this year to take them to Meijers', heat
them for a week in the hot room, then run them through the Bogenshutz and
hopefully narrow down the combs and recover some of the honey.
It took forever to get out of here. I had
been reassured several times that both trucks were completely ready to go, but
at the last minute, it turned out that there was a flat -- and about ten other
little things to tend to. We finally got to their farm around eleven, and were
greeted by Doreen. The men (minus James who was down with the flu)
were out wrapping, but hurried home when they heard we had arrived. We
unloaded the trucks and trailers, then Dennis had to hurry home, but I stayed
for lunch. We had a good visit, then I headed back.
Paulo was
transferring a few hives to the Styrofoam boxes for a wintering test. I
ran out to supervise a bit and then left him to finish. El, Mom and I
drove to Jean and Chris' in the late afternoon and had supper at Dino's in
Ponoka. We then stayed over, since El and I and will drive Mom to the
airport tomorrow, leaving around 8.
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Here's an interesting article on Oxalic acid
Vaporization:
|
2002 |
2004 |
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Using Formic & Oxalic |
Home
A Device for Quick, Safe1
Oxalic Acid
Vaporization
Read
this important disclaimer
Oxalic
Acid Safety
At
the recent ABA
convention, Cor De Wit described his experimental set-up for using oxalic
acid vaporization to control varroa. I was so impressed, that I
asked him for his slides and he obliged. In fact, he drove to
Edmonton, had them put onto a CD and sent them to me -- and he won't let
me pay him for the effort. |
|
At first, Cor tried the VARROX oxalic
evaporator as designed and recommended, but encountered some problems:
Treatment took too much time per hive for
commercial bee operations with hundreds or thousands of hives
Fumes were escaping out of the entrance
and cracks in the hive, lowering efficacy and presenting a hazard
The low clearance of entrances in North
American hives resulted in poor circulation of fumes in the hive,
and possible fire hazard.
Click on any
thumbnail photo for a full-size view. |
Here's the VARROX Verdampfer,
used as designed. There is an obvious clearance problem.

(The green carpet strip is to deter skunks).
References:
|
|
| Cor decided to use the best
features of the device, but to improve on the method of use to increase
convenience and efficacy, and to reduce hazards to the operator. He
built a cart with automotive batteries and a fan, and developed a
small sheet metal enclosure for the VARROX verdampfer.
The enclosure has an inlet for the fan, a
spout to fit easily into the hive entrance through the small hole in the
reducer, and a filler funnel, into which the oxalic can be dropped onto
the hotplate of the VARROX verdamfer. A cork plugs the filler hole
to prevent fumes escaping there when the fan is activated. The
boxes have legs and a handle to make it easy to swing one into place in
front of each and have it stay it there during two minutes of the
treatment.
A timer on the cart turns the fan off
after two minutes. I think it controls the VARROX evaporator as well, but
I'll have to ask and learn more about the details.
Here are some salient facts:
 |
Oxalic acid (OA) is present in foods like rhubarb. |
 |
OA
in food is dangerous in concentrated form, but apparently harmless
and non-cumulative in small amounts. |
 |
OA
vapour and the dust from the powder can be dangerous to humans if not
properly handled. |
 |
Applied properly, OA seems harmless to bees. |
 |
OA
is naturally found in beehives and honey |
 |
OA
levels found in hives and honey did not seem to increase at all after
OA vapour treatments. |
 |
Oxalic acid vaporization treatment is as effective around zero
degrees C (freezing) as at higher temperatures |
 |
OA
works best when there is little or no brood in the hives |
 |
In
Alberta the most reliable broodless period begins in late October and
November. |
 |
Mean temperatures run just above zero in in late October and
November. |
 |
We
wrap out hives in October and November. |
Note: Although Canadian
authorities have not yet gotten around to verifying the work and making
a formal approval, use of oxalic acid in beehives to treat for varroa
has been extensively tested, and is approved in some of the fussiest
European countries.
As with any treatment,
there are advantages and disadvantages to this method. This
article is not meant to be a recommendation or an endorsement, but is
merely presented to encourage understanding, further study, and,
hopefully, early approval.
More Pictures
Oxalic Sublimation
Next >>
|





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Using
Formic & Oxalic Acids for treatment of Varroa & Tracheal Mites
Read
this important disclaimer
Today..A mix of sun
and cloud. Wind light. High 5.
Tonight..Cloudy. Clearing near midnight. Wind northwest 20 km/h. Low minus 3.
Normals for the period..Low minus 9. High 2.
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Friday November 15th, 2002
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We dropped Mom off at Edmonton International around nine, and
drove to Red Deer, where we shopped for a while, then came home. The car
had acted strangely last night, making several poor shifts, but now was losing
power badly. Everything seemed okay, but the engine just would not pull.
I went to Canadian Tire in Red Deer,
but they ignored me for five minutes at the counter and I got a bad feeling
about the whole business and left. I drove downtown, confident that
something better would present itself. Then I had a brainwave, and phoned
Three Hills Motor Products -- our local Chev/Olds dealer. Normally, I
hate to deal with dealerships -- I used to consider dealership repair
facilities to be an expensive rip-off, -- but recently I gave this shop a try
and found them very personable -- and careful with my money. I appreciate
that. A pleasant woman made me an appointment to get and the engine tuned
and the interior shampooed at three. I'd been planning to get the
interior done, and this gave me an opportunity. It's cheap at $50 to $75,
compared to the outfit I had do the Buick. They charged $100.
We headed home and the car was getting
even worse, but it got us to Swalwell, where we picked up our 1/2 ton and drove
the car in for repairs. I walked up to the repair counter and recognized
a familiar face, Rene Nixon.
"I thought it was you", she said,
smiling. She'd recognized my name on the phone when I called to make an
appointment, but I had no idea to whom I was speaking at the time. I
spent a pleasant evening with her and her husband, Kevin -- plus several other
beekeepers -- in Esmeralda's, the night before the ABA convention, a little
more than a week ago.
When we returned, Dennis had loaded
two trucks and Paulo came back shortly. He reported that we are now
completely done wrapping for winter. Dave took the day off to look for
winter work. Our season is about done.
Today..A mix of sun
and cloud. Wind southwest 20 km/h. High 8.
Tonight..Mainly clear. Wind southwest 20. Low minus 2.
Normals for the period..Low minus 10. High 2
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Saturday November 16th, 2002
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Dennis showed up at nine and took a load of
granulation to Meijers'. Dave rode along with him for the trip. As it
turned out, he had a flat tire on the way over, but was able to remove the flat
and drive on the remaining wheel, at greatly reduced speed to prevent
overheating the remaining tire. Rubber ride axles are good that way; they
have little deflection and the bare hub does not hit the ground.
He unloaded and returned for another trip,
which went uneventfully. The round trip took about three hours.
There are two similar loads left to go, including drums of cappings which we
plan to heat and run through the Fager -- as soon as I get the new gear and get
it installed.
El & I had a quiet day at home and got the
plans firmed up for our trip to Rhode Island and the Niagara Falls meeting.
I am getting quite a few calls for the bees and
it looks as if we will have them all sold by spring. If not, we'll keep
them. I'm not doing all the spring work and then have people pick through
them and chisel on price. They are for sale right now for $200 cash each
in doubles, fed and wrapped and on locations. As-is, where is. 20%
holds them until January. Balance due by March.
We may make some exceptions and deals, such as
partnerships or other arrangements. I have to check with the accountant
about that.
I must confess that I have mixed feelings about
selling. I love beekeeping, but hate extracting honey. At any rate
the time has come to sell, and whether we sell another 700 or so -- like last
year -- or sell them all, I don't care, as long as we get a good price.
Either way, we do okay, and I'll figure out something to do, and I'll have work
for my loyal staff, too.
It looks to me -- by the calls I am getting
and the market environment -- as if we may be charging too little. I
remember the last time that honey prices jumped like this in the '70s -- from
12c to 55c -- every stick of beekeeping equipment -- including absolute junk
-- went for the price of new, assembled equipment simply because there was a
serious shortage of drawn comb in face of strong demand. Old floors and lids,
and any old box that would hold frames, were vacuumed up by eager buyers, no
questions asked.
Going by that reasoning, any useable
box with nine or ten combs should go for around $35. With honey at
$2.50 Canadian, brood chambers with some feed should be at least $50 CAD, by
that same reckoning. What the bees are worth is anyone's guess, since
it now appears that packages will be next to impossible to get next spring
and, if the prices escalate with the price of honey, as they always have in
the past, a two-pounder should easily command over $100 Canadian.
Decent over-wintered hives always out-perform packages and are worth more.
Adding all this up, I can see a heavy double
with good feed, and good bees, on pallets, with decent lids, being worth $250
by spring. We're asking $200, so I doubt that they will last. Of
course there are a few people who are out of touch or who always sell too
cheap. Their equipment will go first, then the price will skyrocket.
By then, the demand from pollination in the
US may have driven US prices up to Canadian levels, and we may wind up
selling into the US in January. We've sold south before, many years
ago, for cash. We sent a reefer van with 400+ hives to Arizona to be
built up for pollination. I think that the almond guys are already
starting to worry. May be I'll give Joe Traner a call.
Today..A mix of sun
and cloud. Wind increasing to southwest 50 gusting to 70 km/h late this
afternoon. High 9.
Tonight..Clear. Wind southwest 50 gusting to 70 diminishing. Low minus 1.
Normals for the period..Low minus 10. High 2.
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Sunday November 17th, 2002
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We were talking about Styrofoam nucs some time back.
Here's a shot of one. These units are tough, and very useful. These are
5-frame nucs, not full size hives and have hard plastic molded in at the
contact areas in the box and in the lid. They have the one flight hole in
the front, and the beekeeper just feeds by shooting syrup into that hole.
the syrup sits on the floor until the bees pick it up. Works like a dam.
We're into some warmer weather
now. Plus eight Celsius is forecast for the next few days. That'll
be nice for a change. It's lovely outside right now, but I have an
article and two ads to write by tomorrow, and I haven't even finished
procrastinating yet. My new site at
www.honeybeeworld.com has been giving me some grief. It is a Unix
site and Unix doesn't like FrontPage very much, so I have been busy
troubleshooting. Drat!
I had a visitor this morning.
A fellow came by to look at the hives and talk about several hundred. I
had a call yesterday from a friend who is considering buying them all -- the
whole 2,400 -- and wondering if we are interested. I said "Yes, come by
and talk". We've several serious enquiries lately, and it is still
early. So far he hasn't come by, but I suspect he will visit his banker
first.
I'm running a bit late again for
my Bee Culture article and have two ads to place in BeeNews by noon tomorrow,
so I'm working today. The Unix server at
www.honeybeeworld.com is still
giving me serious grief. For some reason it is inserting the same page
twice into the diary. Ugggh.
Today..Mainly sunny. Wind west 40 gusting 60 km/h diminishing to 30 this
afternoon. High 8.
Tonight..Clear. Wind west 30. Low 3.
Monday..Sunny with some afternoon cloudiness. Wind west 30 gusting 50. High 8.
Tuesday..A mix of sun and cloud. Low plus 1. High 7.
Wednesday..A mix of sun and cloud. Low minus 4. High plus 1.
Thursday..Sunny. Low minus 5. High plus 2.
Normals for the period..Low minus 10. High 2.
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Monday November 18th, 2002
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Dentist at 11. Tires to take in to
repair. The car to pick up in town. Two BeeNews ads to be in by
noon. A magazine article overdue. It's a busy day.
I went to the dentist and took care of things
in town, then worked at the desk until three, I drove to Calgary to get
the gears for the Fager and the bandsaw blades. While there, I picked up
a copy of FrontPage 2002. From the cover blurbs, it should solve some of
my problems with this site.
Meanwhile Paulo and Dave cleaned off the trucks
and got one truck and the forklift ready to move hives into sheltered
locations. We have some spots that are good in summer, but just too
exposed in winter.
I got home and installed FP2002. As I
could have guessed, it would not load my site properly, and gave share me a
share access violation notice. I guess this replaces the famous Windows
BSOD. I went to bed while the machine downloaded SP1 and SP2. I'm
loading them in in spite of the dire warnings I've heard. I sure hope
that this fixes the problems. So far -- after the honeymoon period when I
had nothing of value or interest on the machine -- Win XP has been less
reliable than Me, and harder to figure out. Still, I won't go back.
There is only one direction. "Resistance is futile. You will
be assimilated".
Today..A
mix of sun and cloud. Wind west 40 gusting 60 km/h. High 8.
Tonight..Clear. Wind west 30. Low 4.
Normals for the period..Low minus 10. High 1.
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Tuesday November 19th, 2002
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Year 2000 on this date
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We took some bee samples
while we were wrapping and Paulo did some mite analysis. For the yards we
have done so far, we got the following results:
|
Yard Name |
Bees
Tested |
Varroa
Count |
%
Varroa |
Bees
Examined |
T r a c h e a l C o u n t |
|
Left side |
Right side |
| Dixon Bush |
229 |
6 |
2.6 |
20 |
- |
- |
Roden
Clearing |
218 |
0 |
0 |
20 |
- |
- |
| Wilsons |
235 |
5 |
2.1 |
20 |
- |
- |
| Getz |
230 |
1 |
0.5 |
20 |
mmm |
- |
| Guards |
240 |
2 |
0.8 |
20 |
- |
- |
| Freres S |
210 |
0 |
0 |
20 |
mm e |
- |
| Vanovers |
215 |
0 |
0 |
20 |
- |
- |
| Elliotts |
220 |
0 |
0 |
20 |
- |
- |
| Osguthorpes |
205 |
0 |
0 |
20 |
- |
- |
| Jonathans N |
225 |
0 |
0 |
20 |
- |
- |
| Jonathans S |
215 |
0 |
0 |
20 |
- |
- |
| CCW |
pending |
|
|
|
|
|
| CCE |
pending |
|
|
|
|
|
| Davidsons |
240 |
0 |
0 |
20 |
- |
- |
| Dixon |
210 |
3 |
1.4 |
20 |
mmm
m ee
mmmmm eee
mmmm
mm
mmmmm |
mm
mm
mmmmmm ee
mmmmmmm
m
mmmm |
| Genert W |
205 |
4 |
0.98 |
20 |
mmmmmmmmmmmmmmm
mmmmmmmmmm eee
mmmm
mmm
mmmmmmmmmmmmm
mm
m |
mmmmmmmm
mmmmmmmmm
mmmmmmmmmmmm
mm
mmmmmmmmmm
m
mmmm |
|
Key:
Where infected bees were found, each line represents one infected bee.
each "m" = 1 mite
each "e" = 1 egg
"-" = No mites found |
With the exception of two yards where the
tracheal levels are high, the mite loads we're seeing, are quite good for this
time of year.
Two yards of the thirteen we have tested have
tracheal high enough to be a concern. That is 15% of our outfit showing
levels at around 30%, if the sample holds true. What is curious is that
the other yards are close to zero. Maybe these two are anomalies.
We'll see. We'll do some further sampling as we go around, now that we
found these two 'hot spots', and we should know better in a few days if we have
a problem, or just a freak occurrence. In the meantime, I am concerned
about Davidsons and Genert W, and, as it happens, we have some warm weather
coming up and we'll get menthol on them today. Reportedly,
blue shop towels can work quite well in wraps
if the temperatures are high enough.
As for varroa, I hate to see any at all, but we
know that the levels we've found so far should cause little harm. At some
times of year, varroa levels this high would be cause for concern, but November
is our broodless month. This is a time when all the mites are riding on adult
bees, not hidden in brood, because most hives have stopped brood rearing for
the next month or two. We'll be inserting a single Apistan strip into the hives
in early March or April, before the brood rearing gets going in earnest, so
that should ensure control. It seems to have worked for the past two years.
Of course we are looking at some alternate controls to use along with Apistan,
because resistance development becomes more likely as time passes.
Rotating treatments should forestall that problem.
We tested all the same
yards for nosema and found no nosema spores. When I tell people that we seldom
find any nosema spores in our bees, they don't believe me, but I recall that
when I tested before some years back after I took a course on bee diseases, I
had to ask a friend to send me some of his bees so I could compare and prove
that we had none. His bees had lots of spores, and they were easy to spot.
Dennis took a another
load to Meijers. Paulo and Dave went north in the 4 x 4 and put menthol
on a few hundred hives. The bees were flying and it was a warm day --
ideal for the job.
I worked here at the
desk and went for a bike ride in late afternoon. Much of the snow has
melted, and the ground is soft.
Today..A mix of sun
and cloud. Wind west 20 gusting to 40 km/h. High 12.
Tonight..Partly cloudy. Wind west 30. Low 5.
Saturday..Sunny. Low minus 10. High minus 2.
Normals for the period..Low minus 11. High 1.
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