A vigorous vine which is necessary to produce abundant fruit and to protect from sunscald.
It is determinate in habit and shy in foliage, increasing danger of sunscald.
I think you will have more loss from sunscald and root rot than you will from blight.
Indeed, sunscald so produced is one of the common troubles of the pear in New York.
Experiments have shown pretty clearly that sunscald, blossom-end rot and cracking are worse on trained plants.