Here is the best reply that I received following my questions about
varieties of alfalfa that were known to produce more nectar.
Brett D. Bannon   [log in to unmask]
 
Dr. Larry R. Teuber writes:
 
  To my knowledge there is no information available on the nectar
production of alfalfa cultivars.  A broad generalization is that
nondormant
cultivars (dormancy class 8 and 9) produce more nectar than dormant
cultivars.  The certified alfalfa seed council annually publishes a list
of
cultivars and their fall dormancy.  You may want to get a copy of that
list.
Check http://www.alfalfa.org/cascpub.html for more information from the
council.
 
>        Dr. Larry Teuber, Professor, Agronomy and Range Sciences,
>University
>of California, Davis, CA  95616.  Telephone: (916) 752-2461; FAX: (916)
>754-6122; and e-mail: [log in to unmask]