Possible new ways to continue growing coffee in a changing climate NaturePlants
Despite the apparent potential of excelsa, the use of this coffee became neither commonplace nor locally abundant, probably because Arabica and robusta served the coffee sector well enough. However, renewed interest in excelsa coffee is now clearly evident. In Uganda, at least 200 farms are now growing excelsa, and this number is growing year-on-year, mainly due to farmers shifting from farming robusta to farming mixed robusta–excelsa or farming excelsa only.
In both cases, based on the considerable morphological variation observed on farms, the planting material has undergone little or no selection and resembles the diversity and range of morphological variation seen in wild populations, as observed by us in Uganda and South Sudan. According to farmers growing excelsa in lowland Uganda, this coffee has been a minor element of their farms for many decades, perhaps generations, and originally came from the forest.
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