Commercial Evaluation of Green

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Commercial Evaluation of Green Gold

• A Persimmon IPM System
• Trevor Lupton
• Lewis Wright Ltd
• Gisborne

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Green Gold A NZ Persimmon IPM System

• Science Based
• Developed 1995-1998
• Lifecycle studies
• Field trials
• Gisborne, Waikato/South Auckland, Northland

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Green Gold

• October 2001PIC Released Green Gold Manual to
  all Growers
• Slow Adoption Broad Spectrum Insecticides
  Available Cheap
• Monitoring Hassle Factor
• Reliable Outcomes From Current Insecticides

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Commercial Evaluation of Green Gold

• 3 Year Project Involving
• Soft Insecticides (not OPs or SPs)
• Monitoring
• Thresholds to Justify Insecticide Use
• Improved Spray Application Coverage
• Comparison with Standard Approach

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Commercial Evaluation of Green Gold

• 2003/04 Preliminary Evaluation
• Green Gold 5 Insecticides
• (only 1 post flowering threshold justified appn)
• Standard 9 Insecticides
• (NB preliminary to the 3-year project)

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Commercial Evaluation of Green Gold

• 600 Fruit Assessed at Harvest 2004
• G G Standard
• Leafroller 4 1
• Scale 4 0
• Mealy Bug 2 0
• Spiders 23 10

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Future

• Year 1 4 growers, 0.5 ha each, current sprayer
  coverage, improving spray coverage, nozzles,
  adjuvants, sprayer types
• Year 2-3 more growers and regions, monitoring
  thresholds, insect control
• Outcome Updated GG, and commercially viable GG
  programme.

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Sponsors

• SFF 28,400
• PIC 15,000
• Fruitgrowers Charitable Trust 5,000