Pingyuan Navel Oranges

Pingyuan Navel Oranges

Pingyuan navel oranges are a protected geographical indication product.

　　Pingyuan navel oranges are produced in Pingyuan County, Guangdong Province. They are characterized by their large size, beautiful appearance, thin peel, fine oil glands, bright orange-red hue, crisp and tender texture, easy separation of pulp, richly sweet taste, seedlessness, early maturity, and good storage and transport resistance. In 2003, Pingyuan navel oranges were certified as national pollution-free agricultural products. In 2006, the General Administration of Quality Supervision, Inspection and Quarantine approved the implementation of geographical indication product protection for Pingyuan navel oranges.

　　Pingyuan County began trial cultivation of navel oranges in 1983 and expanded planting on a large scale after 1995, making it the county’s dominant fruit variety. Pingyuan is the largest navel orange production base in Guangdong Province. As of 2007, the county had over 30,000 mu of navel orange orchards, with more than 15,000 mu bearing fruit, yielding a total of 10,000 tons—95% of which were the high-quality "Newhall" variety.

　　The natural environment of Pingyuan County is favorable, with a mild climate, abundant rainfall (annual precipitation of 1,633.4 mm), and significant day-night temperature variation. The average annual temperature is 20.7°C, with an average January temperature of 11.1°C. During the fruit ripening period, the day-night temperature difference exceeds 10–11°C, and the air humidity is 77%, all of which closely match the optimal growing conditions for navel oranges. This supports both the economic cultivation of navel oranges and the development of their premium quality.

　　Varietal Characteristics

　　Under normal cultivation and management, Pingyuan navel oranges begin to flower and bear fruit in the third year after planting, officially enter production in the fourth year, and see gradually increasing yields. By the seventh year, they reach peak production, yielding 25–40 kg per tree and averaging 2,500–4,000 kg per mu. The oranges are large and attractive, with thin peel, fine oil glands, vivid color, crisp and tender texture that separates easily, richly sweet and fragrant flavor, seedlessness, early maturity, and excellent storability and transportability. They are also highly nutritious, weighing 250–400 grams per fruit, with around 13% soluble solids, 60% juice content, and over 70% edible rate. They are rich in vitamin C, sugars, citric acid, cellulose, pectin, carotene, vitamins B1 and B2, protein, fat, calcium, phosphorus, iron, and other nutrients. With their “beautiful exterior and exquisite interior,” these oranges have a natural shelf life of over five months, making them ideal for fresh consumption and earning them the title “King of Navel Oranges.”

　　Geographical Indication Product Protection

　　In accordance with the "Regulations on the Protection of Geographical Indication Products," the General Administration of Quality Supervision, Inspection and Quarantine reviewed the application for geographical indication product protection of Pingyuan navel oranges. Upon approval, protection was granted starting August 2, 2006.

　　I. Scope of Protection

　　The scope of protection for Pingyuan navel oranges as a geographical indication product is based on the area proposed in the "Approval on the Application for Origin Protection Planting Area of Pingyuan Navel Oranges" (Ping Fu Han [2004] No. 52) issued by the People's Government of Pingyuan County, Guangdong Province, covering the entire administrative region of Pingyuan County.

　　II. Quality and Technical Requirements

　　(1) Site Conditions.

　　The soil within the protected area must be loamy, with a soil layer thickness of ≥100 cm, a pH value between 5.0 and 6.5, and organic matter content of ≥1%.

　　(2) Variety.

　　"Newhall" navel orange (Newhall navel orange).

　　(3) Cultivation Management.

　　1. Seedling Cultivation: Trifoliate orange is used as rootstock, and seedlings are propagated via grafting.

　　2. Planting: Planting density should not exceed 60 trees per 667 m² (mu).

　　3. Fertilization and Irrigation: Use formula fertilization, applying at least 5 tons of organic fertilizer per 667 m² (mu) annually, along with appropriate supplemental fertilization.

　　4. Pruning and Shaping: Maintain a naturally rounded canopy shape, combining winter and summer pruning to ensure good ventilation and light penetration through the tree canopy.

　　5. Timely Harvesting: Fruit should be harvested after late November when the peel turns deep orange to orange-red.

　　(4) Quality Characteristics.

　　1. Sensory Features: Fruit is oval-shaped with a regular form, transverse diameter between 61 mm and 95 mm, open or closed navel (open navel width ≤10 mm). Color is orange-red or orange.

　　2. Physicochemical Indicators: Soluble solids content of 12.5% to 16.5%, edible rate ≥70%, total acidity ≤0.9%, solid-acid ratio ≥13.5.

　　III. Use of Special Mark

　　Producers within the geographical indication protection area of Pingyuan navel oranges may apply to the Meizhou Entry-Exit Inspection and Quarantine Bureau for the use of the “Special Mark for Geographical Indication Products,” subject to approval and announcement by the General Administration of Quality Supervision, Inspection and Quarantine.