@article{Swinton:11748,
      recid = {11748},
      author = {Swinton, Scott M. and Jones, Kezelee Q. and Miller, Neil  R. and Schabenberger, O. and Brook, Roger and Warncke,  Darryl},
      title = {SITE-SPECIFIC VERSUS WHOLE-FIELD FERTILITY AND LIME  MANAGEMENT IN MICHIGAN SOYBEANS AND CORN},
      address = {2002},
      number = {1099-2016-89159},
      series = {Staff Paper 2002-16},
      pages = {39},
      year = {2002},
      abstract = {Prior research into variable-rate application (VRA) of  fertilizer nutrients has found profitability to be lacking  in single nutrient applications to U.S. cereal crops.  This  study examines the yield and cost effects of VRA  phosphorus, potassium and lime application on Michigan corn  and soybean farm fields in 1998-2001.  After four years, we  found no yield gain from site-specific management, but  statistically significant added costs, resulting in no gain  in profitability.  Contrary to results elsewhere, there was  no evidence of enhanced spatial yield stability due to  site-specific fertility management.  Likewise, there was no  evidence of decreased variability of phosphorus, potassium  or lime after VRA treatment.  Site-specific response  functions and yield goals might also enhance the likelihood  of profitable VRA in the future.},
      url = {http://ageconsearch.umn.edu/record/11748},
      doi = {https://doi.org/10.22004/ag.econ.11748},
}