Organic Solutions to Cytospora Canker Disease in Peach 

OARS-RM as a Genetic Preservation Site

Cytospora canker is a devastating necrotic fungal disease in peaches. The pathogen infects the bark at wounds and spreads, eventually girdling whatever branch or trunk it infects. We are trying to find organic methods to control the disease. We are attempting to apply defense-priming compounds to boost the tree’s own immune response, testing biological applications such as Trichoderma to compete with Cytospora at wound sites, and working with IR-4 to test un-labelled organic fungicides.

Collaborating Researchers: Dr. Jane Stewart, Associate Professor, Tree Pathology, CSU

In 2024: Testing multiple silica/Trichoderma products. Canopy spray trial of lime sulfur.

Outcomes: Organic methods of cytospora control that consider biological processes and tolerance over resistance. Pinpoint products and methods that can be used in the production orchard setting.