I made some mating nucs, you can see in the attached picture,dividing deep hives in 5 some of them in 4. In one section I have 2 or 3 frames (9 5/8”). For some reason my success ratio was very low, I would say less than 50%. Out of 5 sections I had mated queens only in 2.
In most cases I filled up the sections with honey and brood frames from strong hives, then gave them capped queen cells. Several times I divided some nucs, made earlier, that had capped queen cells on 3 or more frames, so I placed one frame with capped cells in each section. I noticed many virgin queens emerged and then after several days they simply disappeared. Can anybody advise what to do to improve the success ratio or what was done wrong? Thank you.