Here are two very different organic food growing systems which I love. One is an intensive urban, aquaponic, multi-level system, and the other involves doing nothing other than spreading wood chips and trusting nature. Yet both work and both are inspirational.
The first is Growing Power, an urban farm in Wisconsin growing 1 million pounds (over 450,000 kg) of produce on 3 acres using an aquaponic system of circulating water from fish tanks in the greenhouse to feed the plants. The plants draw out the nutrient from the water and returns it clean to the tanks, giving him a yield 10,000 fish per year on top of the vegetables. He also worm composts on a massive scale and uses warmth from the compost to heat the greenhouses and grows vertically, using every bit of available space.
Here is the short introduction to his operation.