Pear Cultivar Susceptibility to Fire Blight

Table of pear cultivar susceptibility to the fire blight organism, Erwinia amylovora.
(Source of information and credits provided at the bottom of the page.)

Pear cultivar	Fire blight susceptibility rating^z	Pear cultivar	Fire blight susceptibility rating^z
d'Anjou	S	Kieffer	MR
Bartlett	HS	LeConte	MR
Clapp's Favorite	HS	Lincoln	S
Comice	S	Magness	MR
Douglas	S	Maxine	MR
Duchess	S	Moon Glow	MR
Ewart	S	Seckel	S
Flemish Beauty	HS	Sheldon	HS
Garber	S	Starking Delicious	MR
Gorham	HS	Tyson	MR
Hardy	HS	Waite	MR
		Winter Nelis	HS

^zMR = Moderately resistant. Control only needed with fire blight susceptible rootstocks or under high disease pressure.
S = susceptible. Control usually needed when conditions are favorable for infection.
HS = highly susceptible. Control always needed when conditions are favorable for infection. These cultivars should receive first priority when control is called for.

Data compiled by K. S. Yoder and A. R. Biggs from personal observations and the following sources:

van der Zwet, T., and S. V. Beer. 1995. Fire blight - Its nature, prevention, and control. USDA Agriculture Information Bulletin Number 631.