Converting a green kiwifruit block to gold under Psa pressure
At Te Puke, a 5.0 ha Hayward green kiwifruit orchard on free-draining volcanic soil yields 8,600 trays/ha sold at $6.80/tray orchard gate, with on-orchard costs of $42,000/ha. The owner holds an offer to convert the whole block to a gold cultivar: licence at $95,000/ha, conversion (uprooting, redevelopment, structures) at $120,000/ha, and three years before full production at 11,500 trays/ha and $10.20/tray, with on-orchard costs of $68,000/ha. A wet spring has left 14% of existing vines with Psa leaf spot, and one shelter line has been trimmed back, raising wind exposure across the block. The gold cultivar is more Psa-susceptible than Hayward. The block is mortgage-free, but the owner is 61 and the only family member returning to the business has no gold production experience. Zespri licence rules require the land to be in production and the orchard to meet industry standards.
1. Build a ten-year incremental cash comparison of converting versus staying in Hayward, and state what the decision hinges on.
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Status quo (Hayward). Revenue 5 × 8,600 × $6.80 = $292,400; costs 5 × $42,000 = $210,000; operating surplus $82,400/yr.
Gold at full production. Revenue 5 × 11,500 × $10.20 = $586,500; costs 5 × $68,000 = $340,000; operating surplus $246,500/yr. Incremental surplus once mature = $164,100/yr.
Capital. Licence 5 × $95,000 = $475,000; conversion 5 × $120,000 = $600,000. Total $1,075,000.
Ten-year incremental cash.
- Years 1–2: no gold income, Hayward surplus forgone ≈ −$164,800.
- Year 3: 60% of mature surplus ($147,900) less $82,400 = +$65,500.
- Years 4–10: +$164,100 × 7 = +$1,148,700.
- Net: −$1,075,000 − $164,800 + $65,500 + $1,148,700 = −$25,600.
On operating cash alone the conversion is essentially break-even over ten years, which is a thin margin for the risk taken.
What the decision actually hinges on.
- The licence is a tradable asset with residual value; if it holds value, the true ten-year position is positive. The owner should seek an indicative transfer value, not assume it.
- Psa: gold is more susceptible, and 14% of existing vines are already symptomatic. A 5–10% annual crop loss in the new block would erase the margin.
- The two-year income gap on a mortgage-free block is survivable, but the owner's age and the lack of gold experience are real constraints.
Recommendation. Do not convert the whole block at once. Convert 2 ha as a staged pilot, retain Hayward income, and use the first two seasons to build gold capability. Reassess at year four with actual Psa incidence and tray prices.
2. Identify the Psa management practices that would need to be in place before and during conversion, and explain why each matters.
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Psa is a bacterial disease spread by wind-driven rain, pruning wounds, tools, footwear and plant material, so management is about reducing wounding, reducing inoculum and reducing spread between vines.
Before conversion.
- Site and shelter: the trimmed shelter line increases wind exposure, and wind damage is an entry point. Restore shelter before planting, but avoid dense, still, humid blocks that favour infection.
- Plant source: certified, Psa-tested nursery plants only. Homegrown or uncertified budwood is the most common route for new infections.
- Block layout and drainage: free-draining soil helps; avoid overhead irrigation, which spreads bacteria and lengthens leaf wetness.
During conversion and ongoing.
- Prune only when the forecast is dry for at least 48 hours, and seal or spray cuts. Wet-weather pruning is the single highest-risk practice.
- Disinfect tools between vines in high-risk periods and between blocks always; footwear and clothing hygiene at block entry.
- Copper and elicitor programmes timed to autumn and spring risk periods, rotated to manage resistance and residues.
- Weekly monitoring with industry protocols, immediate removal and destruction of infected material, and accurate record-keeping for traceability.
- Restrict visitor and contractor access; the block will have higher traffic during redevelopment.
The gold block should carry a budgeted contingency for Psa-related crop loss, and the owner should cost the additional spray and monitoring labour before committing. A conversion that assumes zero Psa loss is not a realistic plan on a property already showing 14% vine symptoms.
3. Beyond the cash budget, what factors should influence the owner's decision, and how would you weigh them?
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The cash analysis is close to neutral, so the decision is really made on these factors. Succession and capability. The owner is 61 and the returning family member has no gold experience. Gold production is less forgiving: different pruning, crop loading, harvest timing and Psa vigilance. A whole-block conversion transfers the entire business risk to an inexperienced operator. A staged conversion spreads the learning curve and keeps a Hayward income floor. Risk concentration. Converting 5 ha of 5 ha puts all revenue into one cultivar with higher Psa susceptibility. The current 14% symptom rate is a warning, not a settled outcome. Diversification of cultivar and harvest timing has value beyond its expected cash return. Asset and optionality. The licence is a capital asset with a resale market, so the conversion is partly an investment decision, not just an operating one. But licence rules and transfer values can change, and the owner should not treat the current price as guaranteed. Market and compliance. Zespri controls access and quality standards; the orchard must meet industry standards to hold the licence. Non-compliance risk sits with the owner. Labour and lifestyle. Gold harvest has a narrow window and high labour demand; the owner needs a confirmed labour plan, not an assumption. Weighing. I would weight succession and Psa risk above the marginal ten-year cash result. My advice: convert 2 ha now as a pilot, invest in shelter restoration and a formal Psa protocol, and set a decision point at year four based on measured Psa incidence, tray price and the family member's confidence. Whole-block conversion should require a positive cash result under a 10% crop-loss scenario, which it currently is not.