Fruit & Nut Research & Information Center
Fruit & Nut Research & Information Center
Fruit & Nut Research & Information Center
University of California
Fruit & Nut Research & Information Center

Apricot Diseases & Disorders

Apricot > Deficiencies & Pests >  Diseases & Disorders

Brown rot of blossom/fruit and twig blight (Monilinia laxa and M. fructicola) are the most serious diseases affecting California apricots, and can result in substantial losses in years with warm wet weather during bloom time (Norton and Coates 2012, Ledbetter 2008). Other diseases that commonly affect apricot cultivars in California include shot hole disease (Wilsonomyces carpophilus), jacket rot (Botrytis cinerea, Sclerotinia sclerotorum,), bacterial canker (Pseudomonas syringae), and Eutypa dieback disease (Eutypa lata) (UC IPM 2012). Common rootstock diseases in apricot include Armillaria root rot (Armillaria mellea), Phytophthora root and crown disease, and crown gall disease (Agrobacterium tumefaciens) (Norton and Coates 2012, UC IPM 2012). The prevalence of individual diseases varies with annual and regional variation in climate and soil type.

For detailed information: UC Statwide IPM Program: How to Manage Pests: Apricot

Apricot Photo Gallery

These photos are viewed, courtesy of University of California research and extension personnel and programs, including the UC Statewide IPM Program. Photo information, including the photographer, is displayed when the larger image is viewed.

Deficiencies | Insect, Mite & Nematode Pests | Diseases & Disorders | Vertebrate Pests

Jacket rot on young apricot fruit. photo by JKClark. UC IPM Project ©UC Regents
Jacket rot on young apricot fruit. photo by JKClark. UC IPM Project ©UC Regents
Brown rot blossom blight. photo by JKClark. UC IPM Project ©UC Regents
Brown rot blossom blight. photo by JKClark. UC IPM Project ©UC Regents
Brown rot twig blight. photo by JKClark. UC IPM Project ©UC Regents
Brown rot twig blight. photo by JKClark. UC IPM Project ©UC Regents
The tree on the right is dying from Phytophthora root rot. photo by JKClark. UC IPM Project ©UC Regents
The tree on the right is dying from Phytophthora root rot. photo by JKClark. UC IPM Project ©UC Regents
Brown rot apricot fruit mummy. photo by WW. Coates, UC Cooperative Extension. © UC Regents
Brown rot apricot fruit mummy. photo by WW. Coates, UC Cooperative Extension. © UC Regents
Shothole Infection. photo by JKClark. UC IPM Project ©UC Regents
Shothole Infection. photo by JKClark. UC IPM Project ©UC Regents
The tree on the right is dying from Phytophthora root rot.. photo by JKClark. UC IPM Project ©UC Regents
The tree on the right is dying from Phytophthora root rot.. photo by JKClark. UC IPM Project ©UC Regents
Brown rot blossom blight. photo by JKClark. UC IPM Project ©UC Regents
Brown rot blossom blight. photo by JKClark. UC IPM Project ©UC Regents
Page Last Updated: November 18, 2013
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