Dr. Adrian Correndo's Recommendations for Soil Sampling: Farmtario

Consistency in sample depth – 15 centimetres (six inches) for nitrogen, phosphorus, and potassium – as well as when samples are taken – whether in spring or autumn – is one such recommendation from Correndo, a professor in plant agriculture at U of G. 

Read the story in Farmtario: Proactive soil sampling brings fertility cost savings