In the 1970s, research on agroforestry in the UK and Ireland occurred in a piecemeal manner. Due to difficulties in applying conclusions from isolated experiments across the countries, it was decided to establish experimental sites to carry out research on silvopastoral agroforestry based on experiments with common protocols. This was the Silvopastoral National Network Experiment.
The Silvopastoral National Network Experiment was an early trial of agroforestry across the UK. Beginning in 1968, there were originally six sites involved in the trials: