Farmers that undertake on-farm experiments can benefit from increased yields and reduced input costs. However it is challenging to properly design experiments that will give relevant results. In this interactive session we will simply introduce the principles and practicalities of design of on-farm experiments. We will hear from experts from Rothamsted Research, ADAS and the University of Reading Experimental Farm. We will also hear an on-the-ground perspective from farmers who have recent experiences with experiments. This session is designed for those farmers and/or managers who are on-farm experiment-curious and need a little nudge to give it a go.