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On 27/5/2019, Intellectual Property Office of Viet Nam has issued Decision No. 2588/QD-SHTT on granting Geographical Indication Registration Certificate No. 00074 for Đồng Giao pineapple. The People’s Committee of Tam Điệp City is the organization in charge of managing this geographical indication (GI). 

Đồng Giao pineapple is a specialty of Ninh Bình Province, and is listed in the Top 50 most famous fruits of Viet Nam. Đồng Giao pineapple, along with Tổng Trường anabas fish, Ninh Bình mountain goat and fried rice, are considered gourmet highlights of Ninh Bình province. 

Two main varieties of Đồng Giao pineapple are Cayene pineapple and Queen pineapple. 

Đồng Giao Cayene pineapple has cylinder shape, slight yellow-orange colour, aromatic scent and no fibre. Its weight is about 1.53 to 1.78 kg per fruit, with diameter of about  12.90 to 13.90 cm and length of about 19.45 to 20.39 cm. Each fruit has from 111 to 115 eyes. Edible part of the fruit takes up 72 to 75% of the fruit. Nutrition value of Đồng Giao Cayene pineapple consist of: total soluble dry matter of 12.71 to 14.03⁰bx; Vitamin C content of 27.87 to 28,57 mg per 100g; total sugar content of 8.62 to 9.31%; total acid content of 0.75 to 0.71%; dry matter content of 13.61 to 14.26%; water content of 85.87 to 86.26%. 

Đồng Giao Queen pineapple has cylinder shape, straw yellow colour, aromatic scent, sweet taste and no fibre. Its weight is about 0.54 to 0.61 kg per fruit, with diameter of about 7.71 to 8.49 cm and length of about 10.46 to 11.27 cm. Each fruit has from 92 to 94 eyes. Edible part of the fruit takes up 60 to 74% of the fruit. Nutrition value of Đồng Giao Queen pineapple consist of: total soluble dry matter of 16.70 to 17.87⁰bx; Vitamin C content of 26.52 to 27.10 mg per 100g; total sugar content of 12.47 to 14.29%; total acid content of 0.78 to 0.79%; dry matter content of 16.39 to 17.32%; water content of 82.66 to 83.63%. 

The peculiarity of Đồng Giao pineapple is thanks to unique conditions of this geographical area, i.e. typical half-mountainous terrain, distributed in the hilly region stretching from the West to the East, on the low hills with the altitude of below 100m, and is sparsely separated. Those characteristics have created  consistent climate and good drainage, which are favourable for the cultivation and production of pineapple. Climate-wise, the geographical area has a high radiation, with a total of 110 - 120 kcal/cm²/year, high radiation balance of 87,2 kcal/cm²/year, creating a high level of temperature with annual average of 23.3 – 24.0⁰C. The total annual heat is 8,800⁰C. Annually there are 8 to 9 months with average temperature of over 20⁰C. With the fact of low temperature during period from December to February, and has high temperature during the remains, it is very suitable for the growth and development stages of pineapple. During the blooming and the accumulation of nutrition in the stem, the geographical area has a high temperature variation between day and night (4 - 6⁰C) which helps formulating the peculiarity of Đồng Giao pineapple. Annual average rainfall in the area is approximately 2,078 mm, relatively evenly distributed. The rainy season is from April to October with the highest rainfall in August and September, which is suitable to all of the development periods of pineapple, creating its peculiarity. Pedology-wise, the geographical area has 2 main soil groups, consist of 3 main soil types and 3 secondary soil types, in which the ones having the largest area is the red-brown soil group and the red-yellow soil group. The soil has a high clay content in its mechanical composition, which helps retaining water and nutrition, satisfying the high water requirement of pineapple. The surface level of the soil is soft and loose, suitable for the weak and shallow root of pineapple. Nutrition criteria of the soil of the geographical area also satisfy the needs of pineapple. Trace elements in the soil of the geographical area are at an adequate level, which have a significant impact on the quality of pineapple flower, contributing to the peculiarity of the product. 

Not only the natural conditions, but the techniques in cultivation, production, harvesting and product preservation of the local producers also play a part in the formulation of Đồng Giao pineapple’s peculiarity. 

        The geographical area consists of Phú Long and Quảng Lạc Communes of Nho Quan Districts; Đông Sơn, Quang Sơn Communes and Trung Sơn, Nam Sơn Wards of Tam Điệp City, Ninh Bình Province.  

Geographical Indication and International Trademark Examination Centre.