Coosan

Coosan is a recognized cultivar of the mango tree (Mangifera indica) that originated in the island nation of Fiji during the early 1980s. The variety was selected by local horticulturists for its compact growth habit and high fruit yield under tropical conditions. Coosan mango fruits typically mature between December and February, presenting a round to slightly oblong shape with a dense, bright orange-yellow flesh that is sweet and fragrant. The fruit contains a large seed that is relatively easy to remove, making it popular for both fresh consumption and use in processed products such as juices and preserves.

The plant thrives in sandy loamy soils and prefers a well-drained, tropical climate with rainfall distributed evenly across the year. It is moderately resistant to common mango pests, including fruit flies and scale insects, and shows good tolerance to low temperatures compared with other tropical cultivars. In commercial plantations, Coosan yields between 30 and 40 tonnes per hectare, depending on management practices, and the trees are typically pruned to a height of 6 to 8 metres to improve canopy light penetration.

Cultural significance in Fiji is notable; Coosan is often featured in local festivals and is considered a symbol of agricultural prosperity. Its fruit contributes to the local economy, providing both direct sales to consumers and value-added products for export. Researchers continue to study Coosan for potential traits such as disease resistance and improved shelf life, intending to broaden its cultivation in other tropical regions. The cultivar remains an important component of Fiji’s fruit horticulture sector and serves as a model for breeding programs focused on sustainable tropical fruit production.