Organic substrate mixtures are prepared according to customer specifications to contain the nutrients and acidity (pH) required. During cultivation the pH in the root ball is influenced by various factors, so as a result, these specifications do not always fully meet expectations. On the basis of an extensive inventory, RHP (European knowledge centre for potting soil and substrates) documented the facts. So, which factors play a role and what can growers do to keep, or achieve, the pH at the desired level?
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A stable pH in the pot requires knowledge and craftsmanship
Acidity around root ball fluctuates during cultivation
A stable pH in the pot requires knowledge and craftsmanship
