crop rotation(redirected from Four field system)
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The successive planting of different crops on the same land to maintain soil fertility and help control insects and diseases.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
(Agriculture) the system of growing a sequence of different crops on the same ground so as to maintain or increase its fertility
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
the system of varying successive crops in a definite order on the same ground, esp. to avoid depleting the soil and to control weeds, diseases, and pests.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
A growing method which helps prevent the buildup of soilborne pests and diseases. The vegetable plot is divided into three or four areas each of which is used to grow a specific family of related crops (e.g. the cabbage family). These areas are rotated annually.
Dictionary of Unfamiliar Words by Diagram Group Copyright © 2008 by Diagram Visual Information Limited