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Minimising biennial bearing in apples

Industry Best Practice

APAL sat down recently with Australian and German researchers from the Productivity, Irrigation, Pests and Soils (PIPS2) project Physiological, metabolic and molecular basis of biennial bearing in apples, to discuss the outcomes from their five-year research project to better understand the underlying processes that cause biennial bearing.

Q&A with Dr Dario Stefanelli

In the video below Dr Dario Stefanelli from WA Department of Primary Industries and Regional Development (DPIRD),  explores the importance of evenness and what growers can do to minimise biennial bearing.

Q&A with Prof. Jens Wünsche and Prof. Henryk Flachowsky

Listen to Prof. Jens Wünsche, University of Hohenheim (Germany), and Prof. Henryk Flachowsky, Julius Kühn-Institute (Germany) as they discuss

  • why some apple cultivars bear biennially,
  • the cost of biennial bearing,
  • how to identify when flower initiation occurs,
  • what growers can do to avoid biennial bearing, and
  • next steps for biennial bearing research.

Biennial bearing in apples webinar series

Part 1

In part one Tim Plozza a Research Scientist with Agriculture Victoria share research outcomes about the effects of crop loading on biennial bearing in apples. Providing an overview of the project and the key findings.

Part 2

In part two Prof. Jens Wünsche and Anton Milyaev from University of Hohenheim (Germany), and Prof. Henryk Flachowsky, Julius Kühn-Institute (Germany) share research outcomes about the mechanisms in biennial bearing, and why apple crops fail to develop sufficient flower numbers in the year after a high crop load.

Acknowledgement

This project is part of the Productivity, Irrigation, Pests and Soils (PIPS) program which delivers industry relevant R&D to the apple industry using an integrated and effective approach. For further information on the PIPS program visit https://apal.org.au/programs/more-industry-programs/pips2/

This project is funded by Horticulture Innovation Australia Ltd using the apple and pear industry levy paid by growers and matching funds from the Australian and Victorian Governments.

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