Agriculture Reference
In-Depth Information
Chapter 9
HYDROPONICS
THE GROWER AND THE GROWING MEDIUM
As the grower begins to experiment with soil types and
mixing them they may begin to look at alternative growing mediums
such as rockwool or clay pebbles. These are mostly artificial grow
mediums designed to contain all the plant's mineral needs and allow
air to get the roots to promote good growth.
Figure 9.1 - This is a picture of rockwool in various forms. You can
see slabs and cubes in this picture. 'Grow Dan' is a popular brand of
rockwool.
In the early days of experimenting with artificial grow
mediums inventors found that plants just needed a suitable material
that holds minerals, performs some form of drainage and allows air to
