PERFORMANCE OF 'COMICE' PEAR ON QUINCE ROOTSTOCKS IN OREGON, USA
Comice pear trees on Quince H (also known as Quince 193-16 and EMH), Quince C, and Quince BA-29C rootstocks were planted in 2001 in a sandy loam soil at the Southern Oregon Research and Extension Center near Medford, Oregon. Trees were planted in a completely randomized design with 18 single-tree replicates of each rootstock at a spacing of 1.3×4.5 m and trained to a central leader. Fruit production data were collected annually 2004-2010. The number of flower clusters and fruit per tree, fruit weight, and trunk diameter were measured, from which fruit set, yield per hectare, trunk cross-sectional area and yield efficiency were calculated. Overall, Comice pear trees on Quince H rootstock were similar in fruit set, tree size, and yield efficiency to trees on Quince C while yield and fruit size were similar to trees on Quince BA-29C. The average trunk cross-sectional area at the end of the 10th year was 157.4 cm2 on Quince BA-29C, 91.3 cm2 on Quince H, and 73.5 cm2 on Quince C. The cumulative average individual fruit weight was 231 g on Quince BA-29C, 214 g on Quince H, and 167 g on Quince C. The cumulative yield efficiency (kg/cm2) was 0.56 on Quince BA-29C, 1.04 on Quince H, and 0.98 on Quince C. Through the 10th year, Comice pears on Quince H rootstock appear to be better suited to the tree density of this plot (1690 trees per ha) than those on Quince BA-29C, with tree size moderately larger than Quince C while achieving fruit size and yield characteristics similar to trees on Quince BA-29C.
Sugar, D. and Basile, S.R. (2011). PERFORMANCE OF 'COMICE' PEAR ON QUINCE ROOTSTOCKS IN OREGON, USA. Acta Hortic. 909, 215-218
Pyrus communis, Cydonia oblonga, fruit size, 'Quince H', 'Quince C', 'Quince BA 29C'