

I knew that...
…it’s just that I had forgotten. Reviewing cereal production for 2026 I re-read some of the science associated with the Broadbalk long-term trial at Rothamsted. The experiment with over 180 years of data has worked with organic and inorganic fertilisers. This data forms the basis for commercial crop production worldwide. What are some of its key findings? It highlights the need for additional nitrogen and phosphate to increase yield. The application of chalk (lime) is es


P's.
“P”s come in many forms. Considering soil analysis and plant nutrition the abbreviation P stands for Phosphorous or should that be Phosphate? Soil phosphorus (P) is the essential chemical element, vital for plant life, while phosphate (PO 4 ) refers to the specific ionic compound (e.g. orthophosphate) that plants absorb from soil solution for growth, often used interchangeably in fertiliser talk but technically distinct. Phosphorous exists in the soil in various forms,





