Napier grass biofuel research. Close-up of chopped up napier grass (Pennisetum purpureum) harvested from research plots. These samples will be evaluat

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Napier grass biofuel research. Close-up of chopped up napier grass (Pennisetum purpureum) harvested from research plots. These samples will be evaluated for moisture and ash content, as part of studies into this plant's potential use as a renewable fuel (biofuel). Photographed in the USA.

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Size: 2417px × 3626px
Photo credit: © PEGGY GREB/US DEPARTMENT OF AGRICULTURE/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

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