Description
A deficiency of phosphorus manifests itself in a slow growth and purple decolourisation of the nerves at the lower surface of the leaf and purple stems caused by an anthocyan-accumulation. An excess of phosphor results in an ill-growing plant with an induced shortage of zinc.
Before P 20, it used to be a problem to add any form of phosphor to crops that would be absorbed entirely and very fast without any harmful side-effects. P 20 is absorbed fast and does not have any side-effects.
P 20 is free of chlorides or other excess ingredients.
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