Jeju Mandarin evidence goes beyond a single average: the archive contains large-sample °Brix measurements, grade-distribution analysis and a market-value calculation.
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Historical Jeju field program. Detailed site/sample records remain in the technical archive.
The 2018–2019 Jeju program shows how a shift in sugar-content distribution can change the proportion of fruit entering higher quality grades. This is a useful example of the Nutra-Park story from physiology to fruit quality and then to commercial value.
The later Orange/Mandarin Fact Sheet lists 4 and 2 weeks before harvest, 2 applications, 250 ml/100 L. The Jeju historical field program used a different protocol (2,000×, three sprays), and the two are intentionally not merged.
Historical trial protocols and current recommendations are kept separate. Always follow the latest Nutra-Park technical guidance and local label requirements.
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