| A | B |
|---|
| Aeroponics | The process of growing plants in an air or mist environment. |
| Aquaponics | The symbiotic cultivation of plants & fish in a recirculating environment. |
| Chelating Agents | Chemicals that combine with metal ions and remove them from their sphere of action, also called sequestrants. |
| Coarse Aggregates | For horticultural soil-potting mixes, refers to large, inorganic particles used to create large pores in the mix. Include coarse sand, perlite, vermiculite, shredded plastics, and others. |
| Coir | Fiber obtained from the husk of a coconut. |
| Conductivity Meter | An instrument used to measure the soluble salts concentration in soil or potting mixes. |
| Expanded Clay | Clays that expand greatly upon adsorption of interlayer water and shrink upon drying. |
| Hydroponics | Cultivation of plants in water. |
| Media | Growing materials in which plants can be started that are loose, well drained, fine textured, low in nutrients, and free of disease. |
| Medium Culture | Hydroponic method in which the nutrient solution constantly flows past the roots. |
| Nutrient Film Technique | A hydroponic method of growing plants where a very shallow stream of water containing all the dissolved nutrients required for plant growth is recirculated past the bare roots of plants in a watertight gully, also known as channels. |
| Perched Water Table | The layer of saturated soil in the bottom of a pot of soil, because excess water cannot drain to the normal water table in the soil. |
| Potting Mixes | Plant-growing media made of some type of coarse aggregate, organic amendment, and possibly some soil. |
| Rockwool | Inorganic fibrous substance that is produced by steam blasting and cooling molten glass or a similar substance and is used as an insulator and a filtering material. |
| Soilless | Growing plants without soil. |
