On 9 April, we released information to New Zealand Winegrowers members relating to pruning during an anticipated labour shortage. Bragato Research Institute reviewed existing research to bring the industry the most up-to-date information relating to pruning methods, timing and estimated costs.

This information includes:

  • Spur and mechanised pruning
    • Consider temporary conversion to spur pruning, which would allow mechanical pre pruning
    • Consider converting to mechanical stripping (KLIMA) – although the full benefit may not be realised until year two
    • Reduce the number of canes laid down to reduce wrapping time
    • Mechanically top canes to facilitate faster manual stripping
  • Extending the pruning season – early and late season pruning

Each of these options may result in a reduction in yield. We summarise these yield and cost estimates, based on previous studies in Marlborough Sauvignon Blanc vineyards. The information can be found on the nzwine.com members site, or contact us at info@bri.co.nz for more information.

Updates:

17 April

  • The case study in the fact sheet was updated to clarify barrel pruning measurements
  • BRI released a Q&A to members via email and a new pruning handout, which are both archived on the nzwine.com members site