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Vol. 3 No. 2 (2004)

Articles

Growth, cropping and leaf N Content in ʻJonagoredʼ apple trees depending on nitrogen fertilisation in autumn and rootstock

DOI: https://doi.org/10.24326/asphc.2004.2.16
Submitted: March 25, 2022
Published: 2004-12-30

Abstract

The experiment was established in Warsaw-Wilanów in 2001. Jonagored apple trees on P 16 and P 22 rootstock planted in spring 1996, spaced 3.5 x 1.2 m were used. No differences in leaf N concentration were found in 2002 and 2003. Neither different N treatments or mode of N application had any marked effect on yield value or vegetative growth of trees. No significant response to autumn N feretilization was noted on fruit set and mean fruit weight either. Growth of trees and cropping depended on rootstock. Trees on P 22 showed a less vigorous growth, and yield per tree was lower in comparison with trees on P 16.

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