Preheat oven to 350 degrees, and make sure that all ingredients are at room temperature.
Sift together flour, salt, and baking soda. Add whole-grain flour. Cream together sugar and shortening in a large bowl. Beat in egg. Add grated apple and apple juice. Mix dry ingredients with the fruit mixture. Add buttermilk, a little at a time. Fold in pecan pieces. Place dough in greased loaf pan. Bake about 1-1/2 hours, or until tests clean. Cool bread in pan before removing.