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ARS Home » Pacific West Area » Wenatchee, Washington » Physiology and Pathology of Tree Fruits Research » Research » Research Project #427978

Research Project: Identifying and Managing Sources of Quarantene-Significant Post Harvest Diseases in Pacific Northwest Apple and Pear Orchards

Location: Physiology and Pathology of Tree Fruits Research

Project Number: 2094-21220-002-06-N
Project Type: Non-Funded Cooperative Agreement

Start Date: Feb 26, 2015
End Date: Sep 30, 2019

Objective:
1) To conduct validation research showing that the systems approach to prevent crabapple decay is effective using a combination of disease inoculum removal from infected ‘Manchurian’ crabapple pollinizer coupled with appropriate post-harvest fungicide treatments and rigorous pre-export inspection can reduce Neofabraea, Phacidiopycnis and Sphaeropsis decay to non-detectable levels. 2) Improve growers’ understanding regarding the incidence and management of bull’s eye rot in apple orchards. 3) Develop a decision support system to aid pear growers and packers in identifying and managing orchards that are at high risk for post-harvest fruit infection with Phacidiopycnis pyri and Sphaeropsis pyriputrescens.

Approach:
This project will provide the information to determine the efficacy of the proposed systems approach mitigation for Phacidiopycnis and Sphaeropsis in apple orchards; identify an appropriate alternative to ‘Manchurian’ crabapple as an early season pollinizer in apple orchards; help growers understand the most effective ways to manage bull’s eye rot in apple orchards to prevent losses; and use existing research coupled with field surveys to identify characteristics of pear orchards at high risk for infection by Phacidiopycnis pyri and Sphaeropsis pyriputrescens.