Bourbon Mayaguez 71

Bourbon Mayaguez 71, often abbreviated as BM71, is a distinct selection within the Bourbon-Typica genetic group. Its lineage traces back to the broader Bourbon family, which originated from plants taken from Yemen to the island of Bourbon (now Réunion) and subsequently spread globally. The specific 'Mayaguez' designation arises from the variety's transit through the USDA germplasm collection located in Mayaguez, Puerto Rico, before its eventual introduction to East Africa.

In the 1930s, this germplasm was introduced to the Mulungu collection in the Democratic Republic of Congo. By the early 1950s, it reached Rwanda, where it became a foundational component of the country's coffee sector. Upon its arrival in East Africa, researchers performed selections on the existing Bourbon population to identify mother trees with superior performance, resulting in the formalization of the BM71 and BM139 varieties.

In the field, Bourbon Mayaguez 71 is characterized as a tall plant with bronze-tipped new leaves. Agronomically, it is recognized for providing moderate yields. While it is highly regarded for its cup quality, it is not a disease-resistant cultivar; like many traditional Bourbon varieties, it remains susceptible to major coffee diseases, which necessitates careful management by producers.

Producers typically choose to plant BM71 because of its proven track record in the specific microclimates of Rwanda and Burundi. It is particularly well-adapted to medium altitudes, where it can express its genetic potential for quality. Its widespread adoption in these regions has made it a staple of the local coffee economy, contributing to the consistent profile associated with East African Bourbon-derived coffees.

For the roaster and the drinker, BM71 offers the classic, desirable characteristics of the Bourbon lineage. It is generally noted for a balanced, sweet profile with crisp acidity. Because it is a direct descendant of the Bourbon family, it is often sought after by specialty roasters who prioritize the nuanced, clean, and sweet cup profiles that have made Bourbon one of the most culturally and genetically significant varieties in the world.

Today, the variety stands as a testament to the historical movement of coffee germplasm through international research stations. While newer, disease-resistant hybrids have been developed, BM71 remains a vital part of the agricultural landscape in Rwanda and Burundi. Its continued presence in these countries highlights the enduring value of traditional Bourbon selections in producing high-quality specialty coffee.