@article{Nehring:205317,
      recid = {205317},
      author = {Nehring, Richard F. and Hallahan, Charlie and  Fernandez-Cornejo, Jorge and Wang, Sun-Ling and Wechsler,  Seth and Hart, Jarrett and Mosheim, Roberto},
      title = {Revisiting Quality-Adjusted Price and Quantity Indices for  Pesticides},
      address = {2015-05-26},
      number = {330-2016-14028},
      pages = {16},
      month = {May},
      year = {2015},
      abstract = {This study extends previous research, which calculated  quality-adjusted price and quantity indices for the  pesticides applied to corn, soybeans, cotton, and sorghum  using hedonic methods (Fernandez-Cornejo and Jans, 1995).  We extend the analysis through 2008 and make several  econometric improvements.  The analysis proceeds as  follows: First, Zivot-Andrews tests are used to determine  whether there are structural breaks in the data generating  process. Next, we use hedonic regressions to control for  pesticide quality characteristics including potency,  toxicity, and persistence across active ingredients.   Finally, the regression results are used to obtain  preliminary estimates of the quality-adjusted price and  quantity indices.},
      url = {http://ageconsearch.umn.edu/record/205317},
      doi = {https://doi.org/10.22004/ag.econ.205317},
}