@misc{indiciaee759936eb1b2,
  title = {Long-term tillage and crop rotation effects on residual nitrate in the crop root zone and nitrate accumulation in the intermediate vadose zone},
  author = {A. Katupitiya and D.E. Eisenhauer and R.B. Ferguson and R.F. Spalding and F.W. Roeth and M.W. Bobier},
  year = {1997},
  url = {https://pubs.usgs.gov/publication/70019694},
  note = {Source identifier: 70019694}
}