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Earth

A sprinkling of nanotubes makes plants shoot up

30 September 2009

TINY they may be, but carbon nanotubes have found a remarkable range of uses, from stretchy loudspeakers to artificial photosynthesis. Now use as a fertiliser can be added to the list.

Plant biologist Mariya Khodakovskaya and nanotechnologist , both at the University of Arkansas at Little Rock, planted tomato seeds in a growth medium that contained carbon nanotubes. They found that the seeds germinated sooner and seedlings grew faster than those in a non-treated medium (ACS Nano, ).

Nanostructures have been reported to boost germination before, but no explanation for the phenomenon has been offered until now.…

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