Subject: Why does an acre of corn yield more total protein than an acre of soy?

This is a bonus question on one of my assignments. I'm not looking for a free
ride, so if you want just point me in the right direction! The only theory I
have so far is that soy is a legume, so they have bacteria associated with their
roots. Perhaps more of the protein in soy is given to the bacteria, whereas the
corn plants are able to keep the bacteria for themselves? Not sure. Thank you.

Re: Why does an acre of corn yield more total protein than an acre of soy?