Preheat oven to 350ºF. Spray 9x5 in. loaf pan with vegetable pan spray.
In large bowl, beat butter and sugar with electric mixer until light and fluffy. Beat in eggs, one at a time; add milk. Combine flour, baking powder and salt; add butter mixture, stirring just until moistened. Fold blueberries, lemon zest and pecans into batter. Pour batter into pan.
Bake 60-65 minutes or until toothpick inserted in center comes out clean. Cool completely on rack.
Meanwhile, add enough lemon juice to confectioners? sugar to make a thick glaze; drizzle over loaf. Allow glaze to set.