OSACC White Mold Test Results

White mold test results should be used as only a general guide in variety selection. Ratings could change with weather and location. Grower’s with white mold problems should consider crop rotation with a non-host crop, selection of early varieties, wider row spacing and avoiding heavy applications of manure, in addition to selecting varieties with the lowest plant infection.

Harrow, 2018 White Mold Trials

White mold testing of commercial varieties will be discontinued at Harrow due to inconsistent field conditions required for adequate and timely disease development and infection.

Harrow, 2016, 2017 Trials

Infection did not develop in the field on the majority of test varieties in each year. Disease development was reduced by excessive dry and above average temperatures which may have impacted the development of infective white mold sclerotia. Additional daily misting initiated soon after first flowering to nurture disease development was unable to improve conditions for infection.

Harrow, 2015 Trial

Infection did not develop in the field on (85%) of the test varieties using daily misting initiated soon after first flowering to nurture disease development. Conditions in the field were warm nights during petal senescence with wet to very wet conditions into late summer which may have impacted the development of infective white mold sclerotia.