A new study in Nature Food warns that rising temperatures could dramatically reduce areas suitable for export banana production in Latin America and the Caribbean by 2080 unless there are urgent interventions. The researchers used satellite imagery, including radar, to map intensive banana production and to link climatic, soil and socioeconomic factors with viability. They found production concentrated at low altitude with high stable temperatures, slightly acidic soils and proximity to ports and urban centres.
The study projects likely yield declines across most current banana zones and flags socioeconomic constraints — for example labour availability and infrastructure — that will complicate adaptation. It highlights Colombia and Costa Rica as especially vulnerable for exports to Europe and North America, while southern Brazil and Ecuador show a more favourable outlook. Many Caribbean island systems, such as in Haiti, were less intensive and were not well detected, and the team plans other monitoring approaches.
Bananas make a global market of about US$11 billion a year and are important for income and food security. In Colombia banana trade is about five per cent of agricultural GDP and provides work for nearly 300,000 people. To respond, Brazil added banana cultivation to its Agricultural Climate Risk Zoning in 2020 and is testing measures.
- Increased irrigation and water management.
- Drought-tolerant hybrid varieties that need 25 per cent less water.
- Gradual heat exposure experiments on Grand Nain plants to build tolerance.
- A sprayable "sunscreen" to reduce heat damage; trials show treated plants keep more chlorophyll.
Difficult words
- intervention — planned action to change a situation or outcomeinterventions
- viability — ability of something to continue or succeed
- altitude — height of a place above sea level
- proximity — nearness in space to another place
- infrastructure — basic physical systems and services for a region
- yield — amount of crop produced in a given area
- chlorophyll — green pigment in plants used for photosynthesis
Tip: hover, focus or tap highlighted words in the article to see quick definitions while you read or listen.
Discussion questions
- Which interventions from the article should governments or producers prioritise to protect export banana areas, and why?
- How could reduced banana-growing areas affect local incomes and food security in countries such as Colombia? Give specific effects mentioned in the text.
- The study found many Caribbean island systems were less intensive and not well detected. What monitoring approaches or policies might help these systems, based on the article?
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