Vietnam, the world's second-biggest coffee exporter, has predicted that bad weather and weak prices could cause its bean output to shrink by almost one-third this season.
The country's coffee exports in the 2002-03 crop season could some in at 500,000 tonnes, down 30% from the previous year.
The country's coffee industry body - the Vietnam Coffee and Cocoa Association - said producers were receiving $450 a tonne, compared with the $2,000 they earned six years ago.
Ironically, the fall of the price of coffee has been largely caused by Vietnam's emergence as a major exporter.
Wanted: a rally
The news of Vietnam's dwindling crop, combined with talk of dry weather in Brazil, the world's top producer, produced a jump in coffee prices on Friday.
London coffee futures jumped by 5%, hitting a two-year high of $743
a tonne.
But it will take a more sustained rally to bail out Vietnam's economy, which has suffered from its growing reliance on the crop.
The country earned some $260m from coffee in 2001-02, just over one-third as much as it brought in four years earlier.
Falling prices have caused a vicious spiral, as Vietnamese farmers cut the amounts of water and fertiliser they apply to their fields, thereby further reducing the yield and quality.
The international charity Oxfam recently launched a campaign to highlight the plight of the developing world's coffee growers, who it claims receive too low a proportion of the revenue from coffee sold in the West.
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