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UK: Mechanising the future of apple growingAdopting fruit-wall orchards instead of traditional orchard systems, could make mechanising the pruning of apple trees easier for growers and help reduce costs, latest AHDB Horticulture research finds.
Uncertainties about the fruit industry’s ability to source seasonal workers following Brexit and an increase in labour costs means there’s a sharper focus than ever on finding ways to mitigate the industry’s reliance on human labour.
Modern intensive orchards are already simpler and easier to prune than traditionally planted ones but it can still take between 25 and 40 hours of labour per hectare. In fruit-wall orchards, mechanical pruning work rates vary between 1.5 and 2.5 hours per hectare, so even though some hand-pruning will be needed, there is potential to save around £3,000 per hectare over an orchard’s 15-year life.
Mark Holden, from Adrian Scripps Ltd and the industry representative of the project, said: “The cost of labour is inevitability increasing due to the rises in the minimum wage. Also, there is a potential shortage of a quality workforce in the future, therefore I am keen to explore how we can get the best from mechanisation. Another key target is improving the consistency and quality of the fruit from tree to tree in the orchards. Mechanical pruning was identified as, potentially, one way to achieve both these goals.”
AHDB Horticulture has spent the last four years investigating the tree types and pruning regimes most suitable for use in a fruit-wall orchard in the UK in two projects.
Recommendations have been generated from one of the projects about pruning timing for growers who are working with fruit-wall orchards and include:
- In strongly growing orchards, and where tree vigour control is important, it could be better to delay mechanical pruning to the nine or 12-leaf stage
- Where limited regrowth and improved fruit bud formation are required, pruning at the nine-leaf stage appears to be best
- Where trees are not vigorous and are in balance, pruning at pink bud may benefit fruit size and sugar content – but this will encourage more growth
Scott Raffle, Knowledge Exchange Manager at AHDB Horticulture, said: “Research into mechanising apple production is just one of the ways AHDB is supporting projects that promote innovation in horticulture to help our growers remain competitive. The results from these projects could have a really positive impact on fruit growers and we look forward to sharing these results, and other research project updates, with our growers at the Tree Fruit conference in February.’
An update from the research projects will be presented at the AHDB/EMR Association Tree Fruit Conference, which takes place on 28 February at NIAB EMR, Kent.
For more information:
Tel: +44 024 7647 8781
Publication date: 2/17/2017
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