Earthworkers

Many soils already hold significant phosphorus reserves — in some cases enough to support crops for years when soil biology and structure are functioning well. This article is the second contribution from Earthworkers alumnus Tom Scott. It builds on his earlier article, The Nitrogen Trap and the Path Back to Soil Function, and turns attention to phosphorus — a mineral fundamental to plant energy, soil biology, and long-term fertility management. Earthworkers educator Daniel Schuurman, founder of Biologix NZ, has contributed technical guidance to ensure clarity and accuracy in the interpretation of soil and plant processes discussed here. Additional concepts referenced draw from widely recognised practitioners such as Graeme Sait (Nutri-Tech Solutions, Australia) and Dr David C. Johnson (soil microbiologist, New Mexico State University), whose research has contributed significantly to regenerative soil science. Through this growing series, Earthworkers alumni share the areas of soil and plant nutrition that most interest them in practice. In doing so, we expand the culture of knowledge sharing that sits at the heart of the Earthworkers ethos.

Healthy soils can already cycle significant nitrogen - in some cases enough to meet crop demand without bringing anything onto the farm. Earthworkers education supports growers to reduce input dependence, including nitrogen, rebuild soil biology, and strengthen resilience through practical regenerative systems.

At Earthworkers we believe that food production should regenerate the soil it relies on.