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Tufts OpenCourseware
Authors: Kathleen Merrigan, Ph.D., William Lockeretz, Ph.D.


David Pimentel, State of Science Review, forthcoming from The Organic Center

Review materials at

Key Questions

State of Science Review

Compare the conventional and organic systems for:

  • yield levels during the transition period
  • yield levels in drought years
  • energy inputs
  • crop economics
  • labor requirements
  • soil carbon and nitrogen build up
  • nitrate leaching
  • soil microbial population