- Eamonn Hughes
- James R. Gillespie
- Michael Glassman
- Dan Reif
- Phillip Raines
- Edward B. Claflin
- Walt Maurus
- Patricia R. Hammer
- Geoff Rogers
- Cliff W. Emmens
- Chris Chapman
- David Twigg
- Eric J. Cassell
- Hamilton-Edwards
- California Fertilizer Association
- Kelly Billing
- G. Hamilton-Edwards
- Stephen Ward
- Ben Helm
- Marilyn M. Cook