PROTECTING THE GEOGRAPHICAL INDICATION “VĂN CHẤN” FOR ORANGE PRODUCTS

The history of orange cultivation in Văn Chấn began around 1990 [1] , [2] . Trần Phú Farm town was the first place to grow oranges in Văn Chấn district and later spread throughout the neighboring communes. To meet the needs and tastes of consumers, from the Sành orange variety first planted in Văn Chấn [3] , Văn Chấn orange producer has diversified early ripening, late ripening, seasonal orange varieties. long harvest to serve the needs of the market. Up to now, Sành oranges, Đường oranges, CS1 oranges and V2 oranges have been grown in Văn Chấn district, Yên Bái province.

In terms of sensory, oranges have a sweet taste, and sugar oranges have a cool sweet taste. CS1 and V2 oranges have a strong sweet taste.

About quality: Oranges have Brix from 9.91 – 10.73oBx, total sugar content from 7.83 – 8.72%. Sugar oranges have Brix from 7.70 – 10.90oBx, total sugar content from 6.31 – 7.12%, water content from 87.15 – 91.12%. Orange CS1 has Brix from 12.80 – 13.35oBx, total sugar content from 7.39 – 7.55%. Orange V2 has Brix from 10.05 – 11.52oBx, total sugar content from 8.90 – 9.20%, Vitamin C content from 34.50 – 38.75 mg/100g

  Figure 1: Văn Chấn’s crockery

 Figure 2: Văn Chấn sugar oranges

Figure 3. CS1 Văn Chấn oranges

Figure 4. Orange V2 Văn Chấn

Văn Chấn orange growing area is located at an average altitude of 400m above sea level. Most of the Văn Chấn orange growing area has a slope of 15-25o, many rivers and streams. The steep slope makes the soil easy to wash away. To overcome this unfavorable condition, orange growers in Văn Chấn area have designed orange plantations along contour lines, both to help the surface of the garden to drain easily, the trees are not flooded, and at the same time, the orange trees are still normal. regularly provided with enough water during growth and development.

 In addition to topographical conditions, the specific properties and quality of Văn Chấn oranges are also due to climatic conditions, soil conditions and the caring hands of farmers in the geographical area. The geographical area has an average annual temperature of 22-26oC, a large temperature range of day and night (average of about 8-9oC), relatively large rainfall (average of 1,200-1,800mm/year). The annual average humidity is from 83% to 87%. The soil of the geographical area is red-yellow soil on clay and metamorphic rocks, the arable soil layer is over 1m thick, the humus content in the soil is quite average (the average total humus content is over 1.8%) … The technique of using most of the organic fertilizers, pruning, creating canopy after each harvest, arranging a reasonable tree density to help the orange garden get suitable scattered light, helping orange trees grow and develop. good, improve fruit quality.

 Geographical area: Cát Thịnh Commune, Tân Thịnh Commune, Đại Lịch Commune, Chấn Thịnh Commune, Bình Thuận Commune, Thượng Bằng La Commune, Nghĩa Tâm Commune, Minh An Commune, Sơn Thịnh Town, and Trần Phú Farm Town. Văn Chấn district, Yên Bái province.

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