Molybedenum comes to mind. Just a trace is needed, so I have read and
heard. I believe it's needed by an enzyme involved w/ nodulation.
No moly- no nodules. Other things are needed, to be sure, but w/o this key
trace element, you'll get didly....
I must give credit to Dr Rateaver for telling me this , years ago
In addition, some non legumes can fix N through some sort of symbiosis w/
the soil. Alder is mentioned in the first link.
BillE
http://www.springerlink.com/content/qv1g02274w668704/fulltext.pdf
http://www.google.com/search?hl=en&rlz=1T4ADFA_enUS368US368&q=molybdenum+imp
ortance+nitrogen+fixing+nodulation&aq=f&aqi=&aql=&oq=&gs_rfai=
Archive powered by MHonArc 2.6.24.