A coffee farmer shows off leaf rust fungus on his thumb, after examining coffee plant leaves that have been infected with leaf rust.

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Size: 5200px × 3470px
Photo credit: © Edwin Remsberg / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: america, central, coffee, costa, fungus, hemileia, leaf, plant, research, rice, rust, tarrazú, tarrazœ, thumb, vastatrix, worker