If you are interested in that particular GODAN group, I suggest
contacting Ruthie Musker at GODAN (cc’d) and/or Matthew Lange at UC
Davis (cc’d) who runs IC-FOODS (https://www.ic-foods.org/)—getting on
the email list via the GODAN website is…elusive…at best at this
point.
As far as publications go, a list of GODAN reports are available here: 
http://godan.info/resources/research.
You may be interested in the VEST portal:
http://vest.agrisemantics.org/
Although, be aware that some (perhaps several) of the links to
resources are now out of date.
You may also be interested in the Global Agricultural Concept Schema
(GACS):
http://agrisemantics.org/node/8
And, for some reason, the mailing list is not linked from that page.
It’s now a google group:
https://groups.google.com/forum/#!forum/gacs-wg
Also, are you aware of the Agrisemantics WG at RDA?
I hope at least some that helps. 🙂
—
Cheers,
/Brandon
________
Brandon Whitehead, GISP
Informatician
CABI Head Office
Nosworthy Way
Wallingford
Oxfordshire
OX10 8DE
United Kingdom
+44 (0)1491 829486