…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

What value does organic manure have? You can have it analysed, apply set financial values to each unit of fertiliser and then work out a...