Co-op 15

(PRI 1569-100 = NJ. 27 x PRI 612-1) (Williams et al. 1975)

Fruit: 64 to 70 mm (2-1/2 to 2-3/4 in.); short conic to long conic; pale yellow ground color, bright finish, slightly striped, blushed, 80 to 95% bright medium red, attractive; thin, somewhat tough skin, occasionally with large white or russeted conspicuous lenticels; moderate grained, pale yellow colored, firm, crisp and breaking flesh at harvest, becoming tender after storage; mildly to moderately sub-acid, spicy, full rich flavor; juicy. Moderate cropping with tendency for biennial bearing. Retains quality into December in refrigerated storage.

Tree: Moderately rigorous, slightly upright, moderately spurred branches with some bare wood at their base; very desirable growth habit; tendency for f1ruit to drop when ripe.

Disease Resistance: Field immune to apple scab; highly resistant to powdery mildew; moderately susceptible to cedar-apple rust; moderately resistant to fire blight.

Problems: Moderate to small fruit size; limited storage-life for season; somewhat tender flesh after one month in storage; tendency for fruit drop.

General Recommendation: Suggested for advanced testing in the Pacific Northwestern U.S., west of the Cascade Mountains.