zero-tillagehttp://www.oed.com/dictionary/zero-tillage_n%3Ftab%3Dmeaning_and_usezero tillage, n.
Revised 2018

zero tillagenoun

Agriculture.
  1. 1963–
    A form of agriculture in which seed is sown in unploughed ground, herbicides being used to kill or control any existing vegetation; = no-till n., sod planting n..
    1. 1963
      Zero tillage’ may become a standard practice of some humid-area corn growers if results of preliminary research are borne out in further studies.
      Kingsport (Tennessee) News 14 January 2/4
    2. 1971
      Even fairly low levels of pesticide destroyed these bacteria... The situation is made even worse by the growing popularity of ‘zero-tillage’.
      New Scientist 25 March 663/1
    3. 2008
      The adoption of zero tillage has led to improved soil water management and increased water use by subsequent crops.
      Weed Technology vol. 22 486/1

Originally published as part of the entry for zero, n. & adj.

zero, n. & adj. was revised in June 2018.