Start your brown rice in a pot on the stove, or in a rice maker. Next, add ground turkey and chopped onion to a large saute pan. Add garlic powder and salt and pepper. When the turkey is browned, add 4 cups of salsa. Bring the salsa to a boil and then reduce the heat to a simmer. Cover and simmer for about 20 minutes. In the meantime, chop the cilantro, pepper, avocado, and mango. When the rice is done, simply stir in almost all of the fresh cilantro, leaving just enough to garnish each dish.