Apple Trees: Disease Resistant Cultivars

Many scab-resistant cultivars have recently been released as a result of breeding programs in the United States. They were developed primarily for resistance to apple scab, but some are also resistant to cedar apple rust, powdery mildew, and fire blight. Disease resistance does not mean total freedom from pesticides, since none of these cultivars are immune to insect damage or summer diseases like sooty blotch or flyspeck.

Earlier releases such as Prima and Priscilla were not well accepted because of poor fruit quality. Since their release, newer cultivars now available may have promise for commercial orchards. Following are comments on selected apple-scab-resistant cultivars (see also Table 1-6):

For more information, please see this Penn State Tree Fruit Production Guide Web page.

Penn State Horticulture Department

For more information on this subject, Please visit the College of Agricultural Sciences Publications Web site.

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