Callery Pear Cultivars Tested as Street Trees: Second Report

Henry D. Gerhold

doi:10.48044/jauf.2000.007

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Figure 1.
Average height growth of Aristocrat^™ (Ar), ‘Cleveland Select’ (CS), and ‘Redspire’ (Rd) Callery pears.

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Table 1.

Size, health, and overall ratings of Callery pear cultivars, derived from data collected until the sixth year to the ninth year after planting. Average trunk diameter, tree height, and crown width are in the most advanced year; foliage health, branch health, and overall ratings are averaged over all years.

Cultivar	Location	Year	Dbh (cm)	Height (m)	Width (m)	Foliage^{^z} 1 to 5	Branchs^{^z} 1 to 5	Overall^{^y} 1 to 9
Aristocrat^™	Warren	9	16.3^{^x}	7.6	5.9	4.9	4.9	8.2
	Tioga	9	19.8^{^x}	8.5^{^x}	5.1^{^x}	4.2	4.4	8.2
	Union City	9	18.2^{^x}	7.3	5.2^{^x}	4.1	4.5	6.7
	Waterford	6	11.0^{^x}	6.5	4.6^{^x}	4.1	4.8	7.0
‘Autumn Blaze’	Titusville	9	15.6	5.6^{^x}	5.7	4.6	4.3	7.4
‘Bradford’	Saegertown	9	15.l^{^x}	7.5^{^x}	4.9^{^x}	4.6^{^x}	4.6^{^x}	7.6^{^w}
‘Capital’	Red Lion	7	14.6^{^x}	6.1^{^x}	4.7	4.9	4.6	7.6^{^w}
Cleveland Pride^®	Mt. Holly Spngs	6	10.4	5.5	3.2^{^x}	4.9	5.0	8.4
‘Cleveland Select’	Franklin	9	14.3	8.1	4.6	4.6^{^x}	4.7	7.5^{^w}
	Tioga	9	11.3^{^x}	7.7^{^x}	3.8^{^x}	4.4	4.7	8.2
	Union City	9	15.8^{^x}	7.2	3.9^{^x}	4.2	4.5	7.1
	Red Lion	8	10.7^{^x}	5.5^{^x}	4.2	4.8	4.4	6.4^{^w}
	Hanover	7	8.4	5.1	3.7	4.7	4.9	6.3^{^w}
	Waterford	6	9.4^{^x}	6.2	3.1^{^x}	4.2	4.9	6.9
	Mt. Holly Spngs	6	10.8	5.5	2.3^{^x}	5.0	5.0	8.9
‘Redspire’	Titusville	9	15.4	7.3^{^x}	5.4	4.5	4.2	7.3
	Tioga	9	15.3^{^x}	7.6^{^x}	5.3^{^x}	4.4	4.5	8.9
	Warren	9	12.9^{^x}	8.0	5.9	4.8	4.8	8.0
	Southmont	6	7.8^{^x}	6.0^{^x}	2.3	4.5	4.8	8.8
‘Whitehouse’	Franklin	9	14.9	7.8	4.7	3.5^{^x}	4.0	5.8^{^w}
‘Whitehouse’	Saegertown	9	10.2^{^x}	6.8^{^x}	2.9^{^x}	3.5^{^x}	4.1^{^x}	5.5^{^w}
Valiant^®	Hanover	7	8.8	5.2	4.0	4.7	4.8	7.8^{^w}
Valiant^®	Southmont	6	6.2^{^x}	5.5^{^x}	2.4	4.2	4.7	8.7

↵z Foliage and branch injury ratings: 1 = 65 to 100%, 2 = 45 to 60%, 3 = 25 to 40%, 4 = 5 to 20%, 5 = less then 5% of leaf surface area or of branches injured.
↵y Overall quality ratings: 0 = unsuitable, 5 or 6 = reasonably good appearance and performance, 9 = ideal for the site conditions in adaptation, appearance, and health.
↵x Significantly different at the 95% level from the other cultivar(s) at the same location.
↵w Overall quality ratings at the same location differ by at least 1.0.