Chalk Brood? And debris

[The Poot in Somerset]

Evening all,
Checked my three again today, fondant levels and checked the trays which had been cleaned two weeks ago.
Two appeared "normal" usual mixture of wax cappings, lost pollen etc.
The third - not so good.
A collection of chalk brood "mummies" on the landing board and an enormous amount of debris on the tray.
I'd appreciate your thoughts and advice.
Thanks in anticipation...

 

[The Poot in Somerset]

Other image - I could only get one uploaded.

 

[Podilia]

Chalk brood occurs sometimes in June-July especially if the weather is cold and wet. I had it in two colonies last summer. I read about a plant which can help.

https://en.wikipedia.org/wiki/Achillea_millefolium

So I had used that plant and chalk brood disappeared. If you have it in your area now you can try. Cut the plant above the nest several times during week or two.
Reduce the nest. Introduce another queen if you have it.

 

[Finman]

Chalk brood occurs sometimes in June-July especially if the weather is cold and wet. I had it in two colonies last summer. I read about a plant which can help.

https://en.wikipedia.org/wiki/Achillea_millefolium

So I had used that plant and chalk brood disappeared. If you have it in your area now you can try. Cut the plant above the nest several times during week or two.
Reduce the nest. Introduce another queen if you have it.

University reports say that there is no chemical cure for chalk brood.

The truth is, that all plants work as well. When summer becomes warmer, the disease disappears by itself. But the loss is that build up has delayed and the yield will be smaller.

Only way is to change the queens= to change genes to immune bee stock against chalkbrood.

 

[Michael Palmer]

Is anyone selecting for hygienic stock?

 

[Eyeman]

Looks like you could have old pollen pellets, rather than chalk brood mummies?
Michael Palmer pointed out my mistake a few seasons ago when I thought these were chalk brood mummies.

 

[foghornleghorn]

Evening all,
Checked my three again today, fondant levels and checked the trays which had been cleaned two weeks ago.
Two appeared "normal" usual mixture of wax cappings, lost pollen etc.
The third - not so good.
A collection of chalk brood "mummies" on the landing board and an enormous amount of debris on the tray.
I'd appreciate your thoughts and advice.
Thanks in anticipation...

That looks like old pollen

 

[Finman]

.
I bet that bees have chewed down the pollen comb. There is a hole now and they will draw there drone combs.

Well cleaned however.
.

 

[masterBK]

This is what a floor with bad case of chalk brood looks like

 

[The Poot in Somerset]

That looks like old pollen

Thanks guys - the old pollen pellets thing is completely new to me. I removed the mouse guards a week ago so perhaps they're having a spring clean.
Thanks for your thoughts and photos - really helpful photos Eyeman, cheers.

 

[thibault]

Just to share my experience, had bad chalkbrood in one of my hives, nothing in the other ones. Tried nearly everything, spent a lot of time and effort to sort it out. The combs were badly infected, like tons of mummies. Then one day (late in the season) I decided to requeen (I was not too convinced about the idea), after 3 weeks nearly all chalk brood was gone, and a few weeks later all gone, quite impressive.

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