Varroa Mite Control - Oxalic Acid
ฝัง
- เผยแพร่เมื่อ 7 ก.ย. 2024
- Paul Kelly, research and apiary manager, and our volunteer Wendy describe how to dispense Oxalic Acid Solution into the hives.
A descriptive transcript is available here: hbrc.ca/beekee...
Filmed by Zoey Ross and edited by Wissarut Sukhaket.
Recipe for oxalic acid treatment: hbrc.ca/2022/0...
Frequently asked questions: hbrc.ca/faq/
For more videos, check out the University of Guelph's HBRC TH-cam channel at this link: @University of Guelph Honey Bee Research Centre
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Geez Paul, it looks like a pretty strong colony in the back up against the trees. But seriously, thanks for all the great information you post. You are a go to for how to do in the north, Thanks from Central New Hampshire, US. Have a great fall and winter, Brice
Thanks Bryce. Happy we can help. It is a very strong hive. 27 deeps high!
2 Things. 1 I use a spray bottle and it acts like a smoker as well.I pull the frames one by one and spray both sides. Why does it only last a day or so though? Where does it go if the crystals don't evaporate off the bees? Just a simple mix of a table spoon or two per quart of just water and I think it works well. 2 Is that a bee keepers stack of boxes in the back ground or a bee keepers totem pole.😁
Hi Paul, Has your department looked at other ways of applying Oxalic Acid? Single yearly application of Oxalic Acid is no longer wise. In New Zealand the use of "Staples", from Dry Wall tape (dull porous type) in three layers and Cardboard Staples is the method of application throughout the beekeeping year. OA Sponges are another. It would be very interesting if your department investigated, monitored the methods. Being a leading University with a bucketful of knowledge on bees, your opinion and the University would be most respected. Regards
Hi D
I haven't heard of this method and don't know what the materials you mention are. Could you send me a picture pgkelly@uoguelph.ca
We haven't been recommending multiple applications of OA as it can be toxic to bees with repeat dosage.
Thanks for the tip to consider.
🎯 Key Takeaways for quick navigation:
00:21 🍵 *Oxalic acid, used as a miticide, is safe for bees and doesn't contaminate honey or comb.*
01:21 🐜 *Oxalic acid is applied to prevent mite resistance to synthetic miticides like apivar.*
02:23 🍯 *Oxalic acid helps clean up any mites left after initial treatments, preventing re-infestation in the fall.*
03:25 🌡️ *Applying oxalic acid on a cool day is effective as the bees are clustered, enhancing contact exposure.*
03:56 🧪 *Oxalic acid solution should be made fresh each day as it doesn't keep well, and beekeepers should follow regional guidelines for hive care.*
Made with HARPA AI
Good work, as always!
Thanks Jack!
That's a tall one in the back....
I'm wondering how they got it stacked that high too!
Totem Pole, or Bee Stack. 😄
Nice OA Discussion. My Treatment of Choice.
A very useful Varroa Mite Treatment. Especially, if you do several different types and methods of Varroa Reducing practices. Randy Oliver recommends doing a number of different ways each Bee Season. (Eg, Trickle, Strips, Vap, Trays, Cage, Splits, etc, etc ...
We need to outwit these darn Varroa. 👀
We must : Keep our Bees Healthy and Strong ! 😎
🐝🐝🐝🐝🐝🐝🐝🐝🐝
Happy Beekeeping 2022.
🐝🐝🐝🐝🐝🐝🐝🐝🐝
A Question :
Done a bit of Fact finding. (Still to ascertain.) Is a OA Trickle and Vaporisation using OA Crystal's classed as the Same thing ?
I've used OA Trickle, well here in Scotland. 🏴
Did this last Mid Winter, also earlier this year, with my Nucs. With other management/products too.
Have just purchased a Gas Vap : Lovely easy Gadget, using a Creme Brulee Torch ! (No leads, Car Batteries etc !) 🤭
Can I Trickle, now, and do a Vap in say Mid Dec ?
Or negate the Trickle, and Vap instead !?!
Gas Vap : will be lovely to use, knowing Scottish Winters are Cold, and I will not have to Pop those Hives Roofs off cosy Bees.
Advise appreciated. 🙄
Plenty of OA Talk out there, on Ways to Do it.
But not anything on OA result... using the same Crystal's: Dissolved, then Vaped. Same or not ?🤔
@@ME_MeAndMyBees so I wasn't the only one who thought Totem Pole when I saw the stack of boxes! 🤣
Tallest one I’ve seen 😂
Hello, can I treat colonies 2 times with oxalic acid dribble, one time in October and again in December?
Great instructions on oxalic acid application thank you. Have been seeing the tall stack of boxes in the back ground from 2 weeks ago with the first set of videos us that a project?
Hi Lynx
We like to have some fun. I figure it is the worlds tallest living beehive. It is until someone shows me a taller one. ;)
Where did you get the hive wraps
Thankyou so much for these videos 😊
Is there a temperature that is too cold to do this liquid application to the bees?
We are usually applying it at - 5C to +5C. I don't know if there is a lower limit.
You are very welcome Theresa.
Are you beekeeper?
Hi there,
if we have oxalic acid as a fluid(not crystals), 85% solution, how much should we add to the recipe?
85%? What's the other 15%? Check or ask for the MSDS (Material Safety Data Sheet). Or use the crystalline form, and also check that MSDS to make sure it's pure OA. It's used normally as a wood bleach, can buy it online, from hardware stores, amazon, loads of places. it's also not expensive. In these parts, a 5KG bucket is about $30
I use spray bottle..good info as usual though, glad to see you all back 👍
Thanks! Good to hear about another method.
@@UoGHoneyBeeResearchCentre I measured mine..it takes 4 pumps per seam ,just a 99 cent spray bottle, nothing fancy but fast and seen no adverse effects only positive..
@@UoGHoneyBeeResearchCentre I measured mine..it takes 4 pumps per seam ,just a 99 cent spray bottle, nothing fancy but fast and seen no adverse effects only positive..
I like what I see there. No risk of breathing in vapor
Yes, it is a very safe method.
Is The 50ml dribble method is good to use in Ontario ?
Could i use this instead of apivar?
Love this video very helpful. I also cannot take my eyes off of the 20 foot high colony in the back. What’s going on with that?
We think it's the worlds biggest living beehive.
Just having fun with bees.😄
Thanks Daniel!
Thank you for your informations,
Kindly please reply the link how to mix the solution i could not find it.
My besr regards
Nasser
Please see the link posted in the video description. You can see the description under the video when you select it. I said we had the recipe on our website in the video. We are working on our website and haven't got it all sorted out yet.
is there anything we should know when searching to buy oxalic acid? are there different forms ?
No nothing just normal oxalic acid..
Is your application process & OA quantity the same if treating a double-deep colony?
Hi MIke
You apply 25 ml to the bottom brood chamber and 25ml to the top one.
Can you please tell me what the material you use for your inner cover? Thanks.
Please see our FAQ hbrc.ca/faq/ to learn more about our canvas inner covers.
Thank you!
I bought a faulty vaporizer, I am from sask. I have 3 hives (2 deeps ) ( one single) is it too cold for this treatment now?
We don't use vaporizers so I can't comment.
Maybe you meant Oxalic trickle. If there is brood no oxalic application method is very effective.
I'd use formic pro, single dose, when the temps work for that product.
I just can't get on board with wetting bees in winter. OAV for me.
Why you putted black box over the hive?
Wind protection and solar gain.
What is the name of medicine?
Would it be beneficial to capture the queen prior to the drip treatment, then releasing her rather than dripping the solution on her also?
This method doesn't seem to harm the queen so removing her isn't necessary.
Can you please provide the link for your OA recipe?
Hi Kristin
Please see the link posted in the video description. You can see the description under the video when you select it. I said we had it on our website in the video. We are working on our website and haven't got it all sorted out yet.
Which is better oxalic or formic
They both have their place and can be used under different circumstances.
Hello do you over winter in a single deep ?
We did a video on that topic. th-cam.com/video/cfO9DTl6SJc/w-d-xo.html
How to make Oxalic acid solution ?
See our website for a recipe.
Хотелось бы посмотреть, как башня из корпусов будет падать))))
does diatomaceous earth harm bees?
yes
Please advise on website name…; thx!
HBRC.CA
Apivar is insecticide.....I mean....NO!!! Thymovar is way better. Still thank you for all your video...I do Oxalic with Varrox spoon.
Here are many questions with no answers
?
Why don’t you spray down a frame rather than drip?
We do the application when the weather is cold. It's tough on bees to remove the frames at that time.
@@UoGHoneyBeeResearchCentre THanx for getting back to me. I’ve got topbars and spraying is effective coverage wise, but I understand regarding colder temps. Luckily I can dribble or spray. Maybe if we have one more warm day eh? All the best to you and your team..
that looks dangerous
Had to switch this off sorry, wind noise is horrendous on my headphones
Hi Stuart
Yes it was windy that day.
We now record with a lapel mike hooked up to a cell phone. We get less wind noise that way.