Ted Yap

Former Graduate Student

Degree: M.S., 2015

Thesis: Influence of Processing and Preconditioning on Hydration and Wettability of Traditional and Alternative Horticultural Substrates

The ability of a substrate component (organic or inorganic) to capture and retain water (hydration and wettability) is important for it to be used to grow horticultural crops in containers. Many factors play a role in a material’s wettability including the processing of the material as well as its preconditioning, previous exposure to moisture, exposure to dry conditions, etc. One goal of Ted’s research was to determine the effect of preconditioning a substrate by drying or rewetting to different testing moisture content might have on the ultimate wettability of that material. Other objectives of this research were to 1) quantify the differences in wettability between pine bark and pinewood substrate materials that were processed by/using different methods and 2) determine where the effects of wettability lie within the particle size distribution of the bark and wood materials i.e. which particle size(s) most influence wettability.

Ted C. Yap