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United States Department of Agriculture

Agricultural Research Service

Research Project: Redesigning Forage Genetics, Management, and Harvesting for Efficiency, Profit, and Sustainability in Dairy and Bioenergy Production Systems

Location: Dairy Forage Research

Title: Replication, randomization, and treatment design concepts for on-farm research

Author
item Casler, Michael

Submitted to: American Society of Agronomy Meetings
Publication Type: Abstract Only
Publication Acceptance Date: 8/10/2017
Publication Date: N/A
Citation: N/A

Interpretive Summary:

Technical Abstract: For most agronomists, randomization and replication are fundamental concepts that have a nearly sacred or spiritual status. They are an integral part of nearly all of our field-based activities. Some on-farm research falls into this category, simply because it is driven and designed by researchers who use working farms as research sites. While farmers might be driving initial research questions and hypotheses, this type of research is designed and conducted by researchers who are generally using all the standard rules for randomization and replication, especially if publication in a peer-review journal is one of the desired outcomes. In these situations, the only special need would be the presence of more extreme spatial variation than one might find on a research station, necessitating more complex designs and data analysis methods. In contrast, participatory research, in which the farmers and researchers are both involved in various stages of the research, including the design, requires more flexibility for randomization, replication, and/or treatment design. Compromise, imagination, and careful definitions of research goals and outcomes are key elements in the design of participatory on-farm research. Often, such research does not involve replication in the classical sense of station-based agronomic research, so all participants must carefully define their goals and desired outcomes to design experiments that meet everyone's needs. Imagination, flexibility, and open-mindedness are key elements to this process.

Last Modified: 09/25/2017
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