A key result of using the biological products is the ongoing improvement in soil health. This addresses a key issue for farmers where soil health has deteriorated markedly over the decades forcing growers to use more and more chemical fertiliser products to try and achieve the same yield outcome. The microbiology in soil is what generates nutrients and trace elements for the plants. Nutrients in the soil must be in their natural form before plants can take them up. It is one of the functions of a healthy food web to hold nutrients in non-leachable forms so that they remain in the soil until the plant requires the nutrients.
Then the plant "turns on" the right biology to convert the nutrients into forms that the plant can uptake.