Performance of Gala' at year 5 with eight apple rootstocks in an 8-location north American NC-140 trial

B. H. Barritt, J. A. Barden, J. Cline, R. L. Granger, M. M. Kushad, R. P. Marini, M. Parker, R. L. Perry, T. Robinson, C. R. Unrath, M. A. Dilley

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

At eight locations (Illinois, Michigan, New York, North Carolina, Ontario, Quebec, Virginia, Washington) 'Gala' trees on eight rootstocks (P.1, M.26, O.3, B.9, Mark, M.9, MAC.39 and M.27) were replicated as 6-tree rows in four blocks. In-row spacing was 1.6 m and the trees were supported and trained to the HYTEC system. For each tree size and yield trait, there were significant site X rootstock interactions. At all sites, P.1 trees had the largest trunk cross-sectional area (TCA, cm2) and M.27 trees the smallest, and at most sites M.9, MAC.39, Mark, B.9 and 0.3 were similar. Also at most sites, Mark, 0.3 and B.9 had the highest yield per tree (kg) and M.27 and P.1 the lowest. Yield efficiency (kg/cm2 TCA) at all locations was lowest for P.1 and M.26 with only small differences among the other rootstocks. At sites with differences in mean fruit weight, P.1 had lower fruit weight than M.9.

Original languageEnglish (US)
Title of host publicationVI International Symposium on Integrated Canopy, Rootstock, Environmental Phyiology in Orchard Systems
PublisherInternational Society for Horticultural Science
Pages129-135
Number of pages7
ISBN (Print)9789066059191
DOIs
StatePublished - Jan 1 1997

Publication series

NameActa Horticulturae
Volume451
ISSN (Print)0567-7572

ASJC Scopus subject areas

  • Horticulture

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