Fire blight, also written fireblight, is a contagious disease affecting apples, pears, and some other members of the family Rosaceae. It is a serious concern to producers of apples and pears. Under optimal conditions, it can destroy an entire orchard in a single growing season.
The causal pathogen is Erwinia amylovora, a Gram-negative bacterium in the family Enterobacteriaceae. Pears are the most susceptible, but apples, loquat, crabapples, quinces, hawthorn, cotoneaster, pyracantha, raspberry and some other rosaceous plants are also vulnerable. The disease is believed to be indigenous to North America, from where it spread to most of the rest of the world.
Fire blight is not believed to be present in Australia though it might possibly exist there. It has been a major reason for a long-standing embargo on the importation of New Zealand apples to Australia . Japan was likewise believed to be without the disease, but it was discovered in pears grown in northern Japan. Japanese authorities are however still denying its existence and the Japanese scientist who discovered it is believed to have committed suicide after his name was leaked to affected farmers.
Read more about Fire Blight: Symptoms, Dissemination, Treatment
Famous quotes containing the words fire and/or blight:
“All praise of the hawk on fire in hawk-eyed dusk be sung,
When his viperish fuse hangs looped with flames under the brand
Wing, and blest shall
Young
Green chickens of the bay and bushes cluck, “dilly dilly,
Come let us die.””
—Dylan Thomas (1914–1953)
“Some say that happiness is not good for mortals, & they ought to be answered that sorrow is not fit for immortals & is utterly useless to any one; a blight never does good to a tree, & if a blight kill not a tree but it still bear fruit, let none say that the fruit was in consequence of the blight.”
—William Blake (1757–1827)