If your answer is no, you might be interested in the article, "Urban farmers make the most of tiny Boise plots". In Boise, people who don't have land work other people's land-- in return, for the most part, for labor or part of the produce. It sounds like a good plan if it works well for all parties involved, although there are a couple of downsides also included in the article.
I was interested to find this after a recent conversation I had with someone who is basically an expert in emergency preparedness. During that conversation, this person pointed out that the people who are "stuck" in the city with no way to garden will be in real trouble in the case of a food emergency because they don't have land to grow food. Perhaps if there were more programs like this around, there would be fewer problems if there were a disruption in transportation of food goods, less produce available from bigger farms, etc.
The thing is, it doesn't seem like this is a "program" per se--one of the people mentioned actually put fliers around just to find the landowners when he was first starting and wanted to use the land for food production. These people are just going out and finding a way to have land they can use, and perhaps make a profit as well. And how much land do you have at your disposal, really? Some of the people in the article use a front yard as a garden.
I recommend reading the entire article. It's amazing what people come up with when they try to come up with a solution, and are willing to help each other...