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Courgette Production: Pollination Demand, Supply, and Value.

Jessica L Knapp1, Juliet L Osborne1

  • 1Penryn Campus, University of Exeter, Penryn, Cornwall, TR10?9FE, United Kingdom.

Journal of Economic Entomology
|October 6, 2017
PubMed
Summary
This summary is machine-generated.

Pollination experiments on courgette (Cucurbita pepo L.) in the UK found minimal pollination deficit, with most crops yielding well without significant insect-mediated pollination. Optimizing pollination could still boost profits for this valuable crop.

Keywords:
agroecologycucurbiteconomic valuationfruit setpollination dependence

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Area of Science:

  • Horticultural science
  • Entomology
  • Crop science

Background:

  • Courgette (Cucucurbita pepo L.) production in the UK is valued at £6.7 million.
  • Limited knowledge exists regarding courgette's reliance on insect pollination (pollinator dependence) and landscape pollinator capacity (pollination deficit).

Purpose of the Study:

  • To investigate pollinator dependence and pollination deficit in field-grown courgettes in the UK.
  • To assess the impact of pollination on courgette yield and fruit quality.

Main Methods:

  • Conducted pollination experiments over two years.
  • Compared yield (length, circumference, weight) between open-pollinated and hand-pollinated courgette crops.
  • Quantified pollination deficit and determined the percentage of unpollinated fruit reaching marketable size.

Main Results:

  • Pollination increased courgette yield by 39%, but no evidence of pollination limitation on overall crop yield was found.
  • A low pollination deficit of only 3% was observed.
  • No statistical difference in yield parameters between open- and hand-pollinated crops.
  • 56% of courgette fruit achieved marketable size and shape without any pollination.

Conclusions:

  • Field-grown courgettes in the UK exhibit low pollinator dependence.
  • While a small pollination deficit exists, its reduction could enhance grower profits by approximately £166/ha.
  • Understanding crop-specific pollination needs aids growers in site and variety selection, improving agricultural resilience and economic returns.