This paper discusses the production, demand trend, export and market access of four selected major tropical fruit namely dragon fruit, mango, rambutan and pomelo through value chain improvements in Vietnam. The results showed that tropical fruit in Vietnam are normally produced by small-scale farmers. Mostly, fruit growers sold their fruit to village collectors according to grade. The seasonality/availablity of fruit, new variety and good agricultural practices (GAP) were the main factors that detemined the highest price through value chain improvement. The main support policies to improve market access of fruit in Vietnam are marketing information system, technical training courses on fruit production in off-season and disease (for dragon fruit, pomelo and rambutan), implementing GAP standards for farmers. Moreover, government should support credit to build the collection centers and packing houses, improve the logistics and promote export. 
Research on tropical fruit in vietnam - 1
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http://vietdragonfruit.com/dataupload/research-ve-thi-truong-rau-qua-vn.docx