Loquat Diseases
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Fire blight symptom on loquat
Fig. 1 
Numerous fungal pathogens attack loquat. The major disease in Florida is called fire blight (Erwinia amylovora), it kills branches and trees in the U.S. Treatment of fire blight includes removal (pruning) and disposal of affected branches and application of fungicides. Excessive nitrogen application increase the susceptibility of loquat trees to fire blight. Many other minor diseases have been reported to attack, loquat including Pythophthora (crown rot), Psuedomonas eriobtoryae (cankers), scab, Diplodia natalensis (collar and root rot), and Colletotrichum gloeosporioides (anthracnose). 1

Fire Blight
Caused by Erwinia amylovora

Fire blight symptoms on loquat Shoot of pear cv. Santa Maria showing typical symptoms of infection by fireblight
Fig. 2 Fig. 3

Fig. 3.  Shoot of pear cv. Santa Maria showing typical symptoms of infection by fireblight "shepherd's crook"

Further Reading
Fire Blight Erwinia amylovora from Cornell University pdf 4 pages
Fire Blight from University of California  pdf 6 pages
Fire Blight from University of Missouri Extension pdf
Fire Blight from the Colorado State University pdf 6 pages


Bibliography

Crane, Jonathan H. and Caldeira M. Lilia. "Loquat Growing in the Florida Home Landscape". edis.ifas.ufl.edu. Document HS5, one of a series of the Horticultural Sciences Department, Florida Cooperative Extension Service, Institute of Food and Agricultural Sciences, University of Florida. Jan. 1980. Revised Nov. 2016. Web. 23 Mar. 2017.

Photographs

Fig. 1 Fire blight symptom on loquat. 2007. Florida Division of Plant Industry Archive, Florida Department of Agriculture and Consumer Services. bugwood.org. Web. 8 Oct. 2014.
Fig. 2 Hesselein, Chazz. Fire blight symptoms on loquat. 2011. Alabama Cooperative Extension System. bugwood.org. Web. 8 Oct. 2014.
Fig. 3 Psallidas, P.G. Shoot of pear cv. Santa Maria showing typical symptoms of infection by fireblight "shepherd's crook. Benaki Institute, Ahens. bugwood.org. Web. 8 Oct. 2014.

Published 7 Oct. 2014 LR. Last update 23 Mar. 2017 LR
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