Geotrichum candidum causes sour rot of fresh-market stone fruit such as peach and nectarine. Since 2001, the incidence of sour rot has increased in California, a semi-arid production area, which is considered atypical for the occurrence of the disease.

Nitidulid beetles and fruit flies were found to play a role in disease transmission.

The study identified sources of inoculum of G. candidum in orchards and packinghouses, and provides information to guide development of disease management.

Yaghmouri et al. (2012) Biology and Sources of Inoculum of Geotrichum candidum Causing Sour Rot of Peach and Nectarine Fruit in California.- Plant Disease, Volume 96, Issue 2, Page 204-210, February 2012.