77% increase in phosphor with penergetic: long-term evaluation of the application on meadow in Austria

The evolution from the first test results in 2010 until 2018 shows an increase of 77% Phosphor. The average of plant available P2O5 got from 5mg / 100g soil sample to 8.8mg / 100g soil sample. The amount of plant available P went from 21.67mg / 1000g soil sample to 38.40mg / 1000g soil sample.