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Training system and tree density affect cost:benefit ratio, but have little impact, relative to season, on fruit yield and quality of 'Lapins' in Tasmania, Australia

conference contribution
posted on 2023-05-23, 09:48 authored by Dugald CloseDugald Close, Whiting, M, Jotic, P, Oakford, M
The objective of this study was to investigate yield, fruit quality and cost of production of ‘Lapins’/’Colt’ sweet cherry trained to intensive Spanish bush (1111, 1481, and 2222 trees/hectare, ha), Tatura trellis (1481 and 2222 trees/ha) and V-axis (2962 and 4444 trees/ha) . The trial was established in 2003 and fruit data were collected between the 2005/2006 and 2008/2009 seasons. Yields were low in 2005/2006 and 2008/2009 due to frost damage. A radiative frost event in 2008/2009 affected Tatura-trained trees to a greater extent than other training systems. Highly intensive Spanish Bush (1481 and 2222 trees/ha) was relatively productive in 2005/2006 (ca. 10 ton/ha cf. > 5 ton/ha; 2 years after orchard establishment) but Tatura trellis and V-axis were more productive in non-frost years. Across all seasons, there were no differences among systems or tree densities in yields, which ranged from 9 to 14 ton/ha. Fruit quality was high with 74-80% rated as grade one (defined as export quality fruit of dark mahogany hue, unblemished and intact pedicel) and, of these fruit, around 80 % were 28 mm or larger in diameter. Training system and tree density had no effect on fruit size distribution. Orchard development costs were relatively high for Tatura trellis and V-axis and, therefore, the internal rate of return was greatest for intensive Spanish bush at 1481 trees/ha (185%). The other systems had similar rates of return of ca. 125 %. Overall, our results suggest that factors other than training system and tree density (eg., environment and management) have a greater impact on system profitability, for ‘Lapins’/’Colt’ within the range tested herein.

History

Publication title

Acta Horticulturae 1020: VI International Cherry Symposium

Volume

1020

Editors

M Ayala, JP Zoffoli, GA Lang

Pagination

463-469

ISSN

0567-7572

Department/School

Tasmanian Institute of Agriculture (TIA)

Publisher

International Society for Horticultural Science

Place of publication

Belgium

Event title

6th International Cherry Symposium

Event Venue

Santiago, Chile

Date of Event (Start Date)

2009-11-15

Date of Event (End Date)

2009-11-19

Rights statement

Copyright 2014 ISHS

Repository Status

  • Restricted

Socio-economic Objectives

Stone fruit (excl. avocado)

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    University Of Tasmania

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