Drain the vegetables, discarding the liquid. In a large, heavy pot, bring the sugar, vinegar and water to a boil. Add the mustard seeds, dry mustard, crushed red pepper, celery seeds, ginger and turmeric and stir well. Add the drained vegetables and bring to a boil. Simmer over moderate heat, stirring occasionally, until the relish is thick and saucy, about 1 hour. Pack the chowchow into 6 hot 1-quart canning jars, leaving 1/2 inch of space at the top, and close with the lids and rings.