Volume 46 Number 2 Article 3
Year 1992 Month 4
Title: The Influence of Nitrogen Fertilization, Season of Application, and Orchard Floor Management on Fruit Quality and Leaf Mineral Content of 'Golden Delicious' Apple Trees
Authors: M. Meheriuk, G. H. Neilsen and E. J. Hogue
Abstract:
'Golden Delicious' apple trees were grown
under 3 orchard floor management systems
(grass sod, vegetation control to July or vegetation control year-round) and 3 rates of nitrogen
(30, 60 or 180 kg N ha-1) applied in the spring
(1980-83) or the fall (1984-87). Fruit at harvest
from grassed plots tended to be firmer, lighter
in color, higher in acidity, higher in K and
slightly higher in Ca compared to those from
non-grassed plots.
Leaf N was lower and leaf K
was higher from grassed plots than non-grassed
plots.
High rates of N tended to give greener
rruit, higher leaf N and lower leaf K. A lower
leaf N content was observed in 1985-87 than in
1981-83 and is assumed to be an effect of time
of N application rather than one caused by tree
factors.
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