Product Name: Navel Orange (Citrus sinensis var. brasiliensis)
Description:
Navel Orange, botanically known as Citrus sinensis var. brasiliensis, is a premium sweet orange variety originating from a spontaneous bud mutation discovered in a Brazilian monastery orchard in 1820. The mutation produced a secondary, undeveloped fruit at the apex of the orange, creating a distinctive “navel” scar on the skin – the feature that gives this beloved citrus its name. Introduced to California in 1870, the navel orange quickly became a global commercial phenomenon and is now cultivated extensively across subtropical regions worldwide. In China, the primary commercial cultivar is Newhall, an early-maturing bud mutation of the Washington Navel Orange, introduced in 1978 and now the dominant variety across major production regions including Gannan (Jiangxi), Fengjie (Chongqing), and Zigui (Hubei).
A Citrus That Delivers on Every Level:
Navel Orange is renowned for its exceptional sweetness, crisp melting flesh, and convenient seedlessness. Soluble solids content reaches 12%–16% Brix, with total sugar exceeding 11% and acidity as low as 0.6%, yielding a sugar-to-acid ratio of 18:1 – a perfectly balanced sweet-tart profile often described as “eight parts sweet, two parts tang.” The flesh is fine, crisp, and melting (化渣) , with a juice content exceeding 55%, delivering a rich, aromatic, and refreshing eating experience. The fruit is seedless, with an edible rate of 74%, making it exceptionally convenient for snacking.
A Visual Standout:
The fruit is oval to long-oval with a bright orange-red to deep orange skin that is smooth, glossy, and highly attractive. The peel is 0.35–0.55 cm thick and peels relatively easily. Inside, the flesh is deep orange, with juice sacs neatly arranged and bursting with sweet, aromatic juice.
Nutritional Excellence:
Navel Orange is a nutritional powerhouse, containing Vitamin C, Vitamin B1, and Vitamin B2 at levels 5–10 times higher than apples and pears. It is also rich in carotenoids and other beneficial antioxidants, supporting immune health, skin health, and overall wellness.
Key Commercial Advantages:
Superior Eating Quality – High sugar (12–16% Brix), low acid, crisp and melting flesh
Seedless – No seeds for hassle-free enjoyment
Attractive Appearance – Bright orange-red skin, smooth and glossy
Excellent Storage Life – Thick peel and firm structure support long-distance shipping and extended shelf life
Extended Supply Window – Through variety sequencing (September Red → Newhall → Late Navel → Summer Orange), fresh navel oranges can be supplied year-round
Geographical Indication Products – Gannan Navel Orange, Fengjie Navel Orange, and Zigui Navel Orange are all recognized as National Geographical Indication Products
High Yield – Mature orchards yield 2,000–3,000 kg per mu
Growing Regions:
Navel Orange is successfully cultivated in Jiangxi (Gannan – the world's largest navel orange production region, with 1.94 million mu and 1.93 million tonnes annual output), Chongqing (Fengjie – known as the "Hometown of Chinese Navel Orange"), Hubei (Zigui – the only citrus region in China capable of year-round fresh orange supply), Sichuan (Jintang, Leibo), Guangdong (Pingyuan), and Fujian. The Gannan region, located at the optimal latitude of 25°N, produces fruit with exceptional sugar content and appearance that surpasses the same varieties grown in the United States.
Cultivation Notes:
Climate: Requires annual average temperature of 17–19°C, ≥10°C accumulated temperature above 5,500°C, and winter temperatures not dropping below -3°C
Rootstock Selection:
Acidic soils (pH 4.5–6.5): Large-leaf trifoliate orange – early bearing, high yield, dwarfing (56 trees/mu at 3m×5m)
Alkaline soils (pH >6.5): Red tangerine or Ziyang sweet orange – strong stress tolerance
Carrizo citrange: Later bearing but excellent late-stage productivity; larger canopy (45 trees/mu at 4m×5m); susceptible to longhorn beetle and foot rot
Planting Density: 45–56 trees per mu at 3m×4m or 3m×5m spacing
Soil: Deep, well-drained loam or sandy loam with pH 6.0–7.0
Fertilization: Apply 2,000 kg of decomposed organic fertilizer per mu before planting; avoid fertilizing for the first month after transplanting; use frequent, light applications for young trees and formula fertilization for mature trees
Pest Management: Focus on red spider mite, aphids, anthracnose, and canker disease. Use 20% pyridaben EC at 2000× dilution for red spider mite, alternating chemicals to prevent resistance
Pruning: Remove inner canopy and water sprout branches to improve ventilation and light penetration; proper pruning can increase yield by 10%–15%
Winter Protection: Paint trunks with lime-sulfur-salt mixture or wrap with straw in cold regions; young trees can be protected with simple plastic tunnels
Harvest Season:
November to June (depending on variety and region). Newhall matures from mid-to-late November; Fengjie Navel Orange peaks from December to January; Late Navel (Lunwan) extends the season from March to June; Summer Orange ripens in April–May. Through strategic variety selection and staggered planting, fresh navel oranges can be supplied year-round – a unique advantage that ensures continuous market presence and premium pricing potential across all seasons.