Date of this Version



© 1992, The Board of Regents of the University of Nebraska on behalf of the University of Nebraska–Lincoln Extension. All rights reserved.


Farmers are interested in evaluating new agricultural practices on their own farms. To produce results credible to themselves, other farmers, and researchers, a systematic method of testing should be used. If a comparison of agricultural practices results in one practice yielding a few more bushels of crop than another, this does not necessarily mean it is a more valuable practice. The difference may simply be due to field variation or chance.

This circular discusses the on-farm trials and incorporation of the two basic requirements in designing experiments: randomization and replication.