muckland

[muhk-land]
noun Agriculture.
  1. fertile farmland characterized by soil (muck soil) that contains a high percentage (between 20 percent and 50 percent) of organic matter.

Origin of muckland

An Americanism dating back to 1840–50; muck + -land
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018