Here are you next steps. You can do this under your name or Create a Member "Yard" with the Yard logo as the picture.
First: Under Settings you can change your appearance to look just like the YARD web site. Note that you can change the banner and the colors of you web site. I am sure you have someone who can do this.
Second form a Agri-Youth group. When you do that you will be the administrator of that group. You group page allows you to treat it like a web page with a blog for the group. You can make this public or private membership.
Third: In the Video contest. Yard should build a separate YouTube Channel called something like AgriYouth so it will get greater search exposure. When some posts their private YouTube of their farm we both can embed it in our YouTube Channels and in the I am the Story, Ning.
Forth: Once your group is set up I can announce YARD as a strategic partner and have your logo on the front page and on the sponsorship page. You can (as a group) use the Ning for email blasting for invites to join the community and the contest.
PR: we can do a join PR. I am reblogged and twetter in many communities.
This may take you nothing more than a evening to do. When you create a YouTube Channel I can simply link to that page the same way I link to my channel. Also keep in mind your members will be able to upload videos and pictures into you group and my community.
Once this is done I have a number of Agricultural groups to introduce you to. This is enough for now.