Organic vs Conventional Dairy Systems Trial 

The Organic / Conventional Dairy Systems Trial, set up in 2001 and run for 10 years, was unique as it was the first comparative grassland-based open grazing dairy study in the world.


The long-term aim of the trial was to better understand organic dairy farming systems by investigating component interactions in these systems, and by determining how impacts and interactions change over time as organic systems mature.

Over the ten years extensive monitoring was carried out on both farms and an inter-disciplinary approach has enabled the spectrum of soils, water, pastures and forage, animal production and health, and economics to be recorded and analysed.

 As the trial is now concluded the publications and results have been compiled and made available to be download from this site