Quote from site "Last year I watched an eye-opening video about pruning tomatoes--getting them to grow high not wide. This encourages air circulation to avoid disease. It also keeps the fruit off the ground.
I like this trellis idea for melons or pumpkins - Ideas for supporting tomato plants. A whole row for tomatoes, cukes, etc. planted on the far side, and shade tolerant lettuces, radishes and beets underneath.