Different crop load management on columnar apple trees: first year results

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F25271121%3A_____%2F24%3AN0000093" target="_blank" >RIV/25271121:_____/24:N0000093 - isvavai.cz</a>

Result on the web

<a href="https://www.actahort.org/books/1395/1395_37.htm" target="_blank" >https://www.actahort.org/books/1395/1395_37.htm</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.17660/ActaHortic.2024.1395.37" target="_blank" >10.17660/ActaHortic.2024.1395.37</a>

Result language

angličtina

Original language name

Different crop load management on columnar apple trees: first year results

Original language description

Research on the optimisation of crop load management in apple trees is mostly concerned with cultivars of common growing types. However, there is not much research work related to crop load management of columnar apple cultivars. After some decline in interest, the columnar apple cultivars are again considered promising, especially for 2D canopy systems. The interest in 2D systems is driven among other things by the prospect of increasing robotisation in orchard management. One of the main limitations for the introduction of columnar apple cultivars in conventional orchards is the high tendency to alternate bearing. To overcome this problem, we have designed several thinning strategies in order to achieve stable flower sets and yields in the columnar apple cultivar ‘Redspring’ grafted on M26 rootstock. Three main strategies were tested, which could be carried out by robots. First, only the removal of flower clusters was performed. Second, the removal of flower clusters was combined with subsequent thinning leaving only the king fruit. Third, the removal of flower clusters was followed by the removal of fruitlets on the required crop load. In all of these strategies, the level of thinning was set at 2, 3, or 4 units 10 cm‑1 of central axis height. The results of the first year indicate that a stronger thinning to 2 units of flower clusters 10 cm‑1 height without fruitlet reduction could avoid alternate bearing and ensure stable sufficient production. This type of flower clusters thinning could be done by robots for crop load management of columnar apple cultivars.

Czech name

—

Czech description

—

Type

D - Article in proceedings

CEP classification

—

OECD FORD branch

40105 - Horticulture, viticulture

Project

<a href="/en/project/QK21010170" target="_blank" >QK21010170: New orchard concept using technology 4.0</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2024

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

ISHS Acta Horticulturae 1395 II International Symposium on Precision Management of Orchards and Vineyards

ISBN

978-94-62613-94-2

ISSN

—

e-ISSN

—

Number of pages

6

Pages from-to

283–288

Publisher name

ISHS

Place of publication

Leuven, Belgium

Event location

Tatura

Event date

Dec 3, 2024

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

—