Have a look at this video from The Norfolk Honey Company- there might be something in there that offers an insight.
https://www.youtube.com/watch?v=ccMK4Oe07nQ
The queen rearing group that I belong to has tried cell punching twice but without any notable success. There are so many factors in queen rearing that it's difficult to pin down exactly what has gone wrong. I doubt that the wet and windy weather we've had for the last 3 to 4 weeks has helped queen rearing.
CVB
Critisism of the video..... please take with a pinch of salt as I am not an expert!
Firstly colony was by far away too small.. even on a Commercial box!
Secondly it was queenless... I have never had any success with this method, preferring a double or even double + 1/2 on National format.*
*I use a queenright system... using the green Maisemore plastic queen excluder. I have tried queenless "starter " method but seems not to work for me. I have had no sucess using the Cloake board method over the past three seasons... which seems to be a halfway house!
The cell punches appeared to be too short, however if the protruding cell was cut down at a 62.5 degree slope to the bit of plastic, that may have given a result. Mr Smailes suggests taking a razor blade to the protruding cell and trimming straight across....
However Imagine an emergency cell, usually the bees cut away two or three cells below it to allow the queen cell to develop... I trim away any excess.
Thirdly the timing seemed a bit slapdash... the queen cells need to be in the incubator or into the well provisioned and stocked queen raising Apidea on day fourteen... or at least caged with a hair roller if left in the colony to hatch.
BIBBA have a queen rearing schedule that is tried and tested... a free download!
Yes grafting is easier.... but at my age my eyes are not up to it!
Yeghes da
E&O excluded
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