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                  Soil & Fertilization
                  Vision
                  Chemical properties
                  Physical properties
                  Biological properties
                  Our own body'NPK' thinking
                  You are here: Home > Soil & Fertilization > Chemical properties > 'NPK' thinking

                  Where did it start

                  SSP thinking started after the First World War when the munitions industry was the biggest and most powerful. SSP production (bombs) was far and away the most important economically. This became the basis of our school system where chemistry focused purely on the inorganic side and therefore approached the link with fertilisation purely on the basis of SSP. This continued to be developed in Wageningen after the First World War.

                  Even though soil and nature = carbon = organic!

                  After the Second World War there was research to confirm this doctrine and to keep this economically important industry intact. At that time the government introduced BLGG. Even now this influence can still be felt to some extent although it has finally and fortunately started to change...

                  If we consider the soil and the natural role of the elements in the soil, then we come across Ca, Mg, K, S, P, N in order of importance. The middle element Potassium is perhaps synonymous for this list. Potassium is a derivative of potash, which was used by the Romans. Pot Ash - wood was burned in a pot, dissolved in water and the filtered solution evaporated. The solution was called Potash and in fact it contains this entire list of important elements for the soil. They knew that back in those days…..

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