Logan Salmons writes in the Arizona newspaper, Casa Grande Dispatch,
Soil’s popularity is eroding as hydroponic gardening blossoms among students.
Casa Grande Union High School’s agriculture program is embracing a modern technique of agriculture. Hydroponic gardening is the process of growing vegetation without the use of soil.
Instead, plants develop in one of four hydro methods. Steven Sipes’ [...]
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Hydroponics Dictionary

