Figure 1
From: Dryland soil chemical properties and crop yields affected by long-term tillage and cropping sequence
Effect of tillage and cropping sequence combination on annualized crop yields from 1984 to 2013. FSTCW denotes fall and spring till continuous spring wheat, FSTW–B/P fall and spring till spring wheat–barley (1984–1999) followed by spring wheat–pea (2000–2013), NTCW no-till continuous spring wheat, STCW spring till continuous spring wheat and STW-F spring till spring wheat-fallow. Annualized crop yield in FSTW–B/P includes average yield of spring wheat and barley from 1984 to 1999 and spring wheat and pea from 2000 to 2013. Bars at the top denote least significant difference among treatments at P = 0.05. Number in parenthesis along with different letters in the treatment legend denotes significant mean annualized crop yield from 1984 to 2013.