Volume 61 Number 2 Article 13
Year 2007 Month 4
Title: Performance of Apple Cultivars in the 1999 NE-183 Regional Project Planting. I. Growth and Yield Characteristics
Authors: R. Crassweller, R. McNew, D. Greene, S. Miller, J. Cline, A. Azarenko, B. Barritt, L. Berkett, S. Brown, W. Cowgill, E. Fallahi, B. Fallahi, E. Garcia, C. Hampson, T. Lindstrom, I. Merwin, J.D. Obermiller, M. Stasiak and G. Greene II
Abstract:
A multi-site experiment to evaluate the performance of 23 apple (Malus × domestica Borkh.) cultivars was
established in 1999. The purpose was to evaluate new and promising cultivars and breeding selections in a range
of geographical and climatic areas within North America.
All trees were propagated on M.9T337 and minimally
pruned to encourage early bearing. ‘Pinova’ and ‘Cripp’s Pink’ had the most flower clusters in the first year after
planting.
At the end of the fifth growing season ‘Cripp’s Pink’ trees were among the largest while NY 65707-19
and ‘Minnewashta’ were the smallest.
CQR10T17 and ‘Golden Delicious’ had the greatest cumulative yield. ‘Pinova’
had the highest yield efficiency and highest mean number of fruit per year.
The largest fruit were produced
on NY 75907-49. Three breeding selections NJ 90, NY 65707-19 and NY 75907-49 had pre-harvest fruit drop in
excess of 20%. ‘Chinook’ had the heaviest annual crop load but also had the smallest fruits. ‘Minnewashta’ and
‘Silken’ were the earliest blooming cultivars while ‘Runkel’ bloomed the latest.
Across all sites the average days
from bloom to harvest was 184 days for ‘Cripp’s Pink’ making it the latest cultivar to mature and probably not
suited to be grown in more northern regions of the continent.
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