@article{Howard:172933,
      recid = {172933},
      author = {Howard, Wayne H. and Blake, Robert W. and Knight, Thomas  O. and Shumway, C. Richard and Tomaszewski, Michael A.},
      title = {Estimating the effectiveness of extension information  systems using farm trials and subjective probabilities},
      journal = {Agricultural Economics: The Journal of the International  Association of Agricultural Economists},
      address = {1992-06},
      number = {968-2016-75441},
      pages = {14},
      year = {1992},
      abstract = {A method of combining survey data and Dairy Herd  Improvement Association (DHIA)
records to achieve low cost  farm trials is presented. Farm trials and surveys of  current
practices and production responses are useful to  identify yield gaps between expectations
predicted from  experimental findings and actual field results. Different  management schemes
can be ranked using subjective  probabilities and stochastic dominance to enhance  successful
implementation of research findings and to  increase the feedback between researchers,
extension  workers, and producers.
A survey of current masitis control  practices and expected milk yield response is the
example.  Combining survey results with DHIA records allowed  estimating the relationship
between somatic cell counts  (SCC) and milk yield. Eliciting beliefs about the  relationship
between sec and milk yield showed that  producers agreed with predictions from the
statistical  model. Subjective probabilities about SCC and mastitis  control practices showed
that our sample of experts and  producers consistently ranked the different practices  but
extension agents had no consensus about the the most or  least effective ones.},
      url = {http://ageconsearch.umn.edu/record/172933},
      doi = {https://doi.org/10.22004/ag.econ.172933},
}