An example of independent research that assessed a wide range of products, including various ones termed biological or similar, was published in CSIRO journal Crop and Pasture Science, Volume 70 (12). Authors included former NSW DPI Agronomist, now Yass LLS Senior Agronomist Fiona Leech, Dr Alan Richardson CSIRO, and Dr Michael Kertesz, University of Sydney. The research found pasture production was mainly related to a given product’s level of available phosphorus and sulphur, with single superphosphate the standout product.
