In last week’s article we mentioned briefly that nurseries should have the correct physical, chemical and biological properties in their growing media. The question is have you actually tested them on site? Listed in the back of “Container Media Management” by K.Bodman and Dr.K.V.Sharman, 1993. This is a complete guide for nurseries to analyse their growing media. It discusses the analytical methods for determining Air Filled Porosity, Total Water Holding Capacity, Wettability, Volume and Bulk Density, pH and EC (Electrical Conductivity), Toxicity Index and Nitrogen Drawdown Index.