Growstones ideal alternative to perlite, parboiled rice hulls
Wednesday, December 14, 2011 - 16:31
in Physics & Chemistry
In the greenhouse business, organic and inorganic growing substrates are chosen for the physical and chemical properties necessary to support specific crops and growing conditions. One important physical property in substrates is air-filled pore space, a particularly important characteristic that allows for gas exchange between plants' roots and the outside atmosphere. Perlite and parboiled rice hulls are the two of the most common components used to increase air-filled pore space (AFP) in substrates. A study compared these popular components to Growstones, an aggregate produced from finely ground waste glass.