Place the rice, stock or water, salt and turmeric in a fairly large pot. Bring to a boil and cook the rice, until the rice is about half done, about 8 to 10 minutes.
Heat the oil in a skillet to a medium heat and add the onion. Cook, stirring well, for about 4 minutes. Add the tomatoes, salt, pepper, sugar and chopped peppers. Stir together then pour it into the pot with the rice. Continue cooking the rice for another 8 to 10 minutes, lid on the pot, until it is fully cooked.
Just before the rice is ready, add the peas and shrimp. Cook for another few minutes to cook the shrimp and heat the peas through. At the last moment, add in the chopped parsley.