Place the rice blend in a saucepan with 2 cups of the water. Bring to a boil, reduce heat, cover and cook 45 minutes. Lest rest for 10 minutes. Meanwhile, place the remaining water in a large non-stick frying pan. Add the onion, bell pepper, mushrooms and celery. Cook, stirring occasionally, for 5 minutes. Mix the chicken broth, cornstarch, soy sauce and the seasonings in a seperate bowl. Add to vegetable mixture while stirring. Cook and stir until mixture boils and thickens. Add ground turkey and cooked rice mixture. Cook, stirring occasionally for 5 minutes.