If you are thinking about setting up a research trial this year, here are a few resources to assist you. 

The Thames Valley Soil and Crop Region (Elgin, Middlesex, Oxford) have led an effort to produce larger, more consistent datasets for the on-farm research projects conducted each year.  A project list and folder with all protocols is available HERE.

The On-farm Research: Guidebook also has valuable information to help you design and set up a trial.  Your local Soil and Crop Improvement Association may also have resources to help you.