Question
I have a bradford pear tree about 20 years old next to my deck and it has the small pears on it inwhich cause's a hugh mess in the fall and spring. I love this tree where it is but I hate this mess it makes. I also have many other bradford pear trees in my yard and this is the only one that has the small pears on it.
 My question ...  Is there something I can do to stop the pears from bearing ? I would hate to have to cut this tree down.

Answer
If you want this tree to be an ornamental
flowering pear instead then spray Gibberellic acid
(Ga3) about a week after petal fall. Naphthalene acetic
acid (NAA) is a more complete chemical thinner
applied at the same flowering stage. Both the above
are growth hormones and are not considered restricted
use pesticides.
Here is an article on thinning fruit on apples the same concept can be applied to pears but instead of thinning use a heavier spray on all flowers and this should wipe out the fruit.
http://www.umass.edu/fruitadvisor/factsheets/Thinning/