Drain pear chunks.
In a food processor, shred celery, onion, carrots, and red bell pepper; scrape into a large bowl.
Add turkey, half the pear chunks (reserve the remaining pear chunks for topping), rice, eggs, salt and seasonings; mix well.
Divide turkey mixture in two; mound each half into greased 9 x 13" pans. In each pan, form the turkey mixture into a 12 x 6" loaf.
In a food processor, puree the remaining drained pear chunks with mustard, soy sauce, honey and lemon juice until it resembles applesauce. Spoon topping onto the loaf.
Bake loaves at 350°F for 55 to 60 minutes. Allow to rest to 10 minutes before slicing each loaf into 12-1" thick servings. (Discard any accumulated juices.)
