Media for Soilless Agriculture
Growing media and soil are porous and the properties of both are similar. An appropriate adaptation technique is required when soil related knowledge is transferred to media due to the differences in structure and root zone volume. Plants may be grown with their roots in the nutrient solution or in an inert medium, such as perlite, gravel, mineral wool, or coconut husk. The medium culture method has a solid medium for the roots and is named for the type of medium, e.g., sand culture, gravel culture, or rock wool culture.