Clay Used in Hydroponic Gardening, SEM

Clay Used in Hydroponic Gardening, SEM

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Credit: Ted Kinsman/SCIENCE PHOTO LIBRARY

Caption: Colour-enhanced Scanning Electron Micrograph (SEM) of an expanded clay aggregate pebble used in hydroponic (soilless) gardening. This is a lightweight ceramic manufactured in a rotating kiln. This material has a very high surface area due to all the holes and cracks. It is able to collect hydroponic chemicals and air to nurture the roots of a plant, making it an excellent delivery method for nutrients. Plants can grow at maximum rates using expanded clay aggregate. A typical hydroponic system will wet the aggregate several times a day. Magnification: 33X when printed at 10 cm wide.

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Keywords: aggregate, ceramic, clay, clay aggregate, clay pebbles, colorization, colorized, colour enhanced, colour enhancement, colour-enhanced, electron micrograph, em, enhancement, expanded clay, expanded clay aggregate, expanded clay pebbles, false colour, false-colour, gardening, hydroculture, hydroponic, imaging, micrograph, nodules, science

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