Hi:
 
Nectar can stimulate a queen's egg-laying, but she has to be in a
physiological state that allows this to happen.  In our chambers, simply
providing nectar during the fall (when daylength has been decreasing) will
not turn a queen's egg-laying back on.  It may stimulate a queen that is
still laying.  We suspect photoperiod or some other factor acts like an
on/off switch.  Nectar can speed things up, but can't turn on the response.
 
Jerry Bromenshenk
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