Does a single pear tree need to have another pear tree to pollinate inorder to produce fruit?

Actually, most pear varieties are self-sterile and require cross-pollination by another variety to get a good crop set. One exception may be the Bartlett which is self-fertile. In choosing a cross-pollinator check to see if they are resistant to fire blight which is a serious bacterial disease in pears.
Does a single pear tree need to have another pear tree to pollinate inorder to produce fruit?
No Pear tree is truly self-fertile, although a few are claimed to be partly self- fertile. This means in practice that Pears will benefit from having another Pear as a cross-pollinator. If you have other Pear trees nearby, or perhaps orchards, cross-pollination will occur via the wind, bees, and other insects. If you choose a variety that is claimed to be partially self-fertile, plant in warm sheltered spot (avoiding bone dry sites) you will get fruit. In the UK,very popular Pear varieties, Conference, Williams Bon Chretien, and the new variety Beth, appear to do well without pollinators.
Reply:I have one single pear tree, planted between 1 single cherry tree, and 1 single apple tree. All three of them are always loaded with fruit (unless freezing gets the blooms).
Reply:I believe you need one. Here is a site with some types of pears, the most common ones, and you can look yours up. If you have neighbors close by with a pear tree and you get good wind action you may not need the pollinator. Good luck.

http://www.deaconsnurseryfruits.co.uk/pe...