VII Farmer-Managed Trials Previous chapters have described a process by which researchers evaluate technological alternatives over one or more locations and years, utilizing their own understanding of farmers' resources, desires, and capabilities, and with increasing farmer participation in researcher-managed trials. After analyzing results from previous trials, the best alternatives are then placed in farmers' hands for their evaluation. Keeping in mind that it is the farmer who must ultimately make decisions concerning adoption or rejection, farmer-managed trials (FMTs) provide the opportunity for farmers to become the primary evaluators of new technology. In order for the farmer to be able to evaluate the results of a trial, the trial must possess three critical characteristics: 1) the technology must be simple enough for farmers to comprehend and manage it; 2) farmers must use their own resources so they can understand all implications of the alternatives; and 3) design of the trial must be simple enough that farmers can observe differences in treatments and/or measure them, with their own means of measurement. An example of an FMT might be the testing of a new cultivar under the farmers' normal planting and cultivating procedures. The farmers pay all their usual costs plus the cost of the seed of the new variety. Design of the trial would be simple: farmers plant one plot with the