[Kostas G.]

PG Mix, a basic fertiliser commonly used for adding to potting soils and substrates, is available in three NPK combinations: 15-10-20, 12-14-24 and 14-16-18. The choice to be added depends on the crop, irrigation requirements and the volume of the production unit. The effect of the basic fertiliser will last from 2 to 6 weeks. Realising an effect of 6 weeks can be achieved only by adding high concentrations of nutrients.
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