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Effect of root pruning and summer pruning on growth, yield, quality, and fruit maturity of McIntosh apple trees

Schupp, J.R.

Acta Horticulturae 322: 173-175

1992


ISSN/ISBN: 0567-7572
Accession: 002359399

Mature McIntosh apple trees on M.7 rootstocks received the following treatments: (1) control, (2) mechanically root pruned at full bloom, (3) summer pruned in mid-Aug. or (4) root + summer pruned. The treatments were applied annually between 1988 and 1990. Root pruning (1 m from the trunk on each side of the row and to a depth of 35 cm) reduced preharvest drop and fruit internal ethylene content and starch index rating.

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