Fig. 2
From: Conservation agriculture enhances maize yields and profitability in Mexico’s semi-arid highlands

Effect of cropping system on maize yield in San Juan del Rio field experiments, 2014-18. The error bars represent the standard error of the mean. In 2019 there was a complete crop failure due to drought. Abbreviations: CT = Conventional tillage, PWB = Permanent wide beds, MM = Maize monocropping, MB = Maize-bean rotation, MO = Maize-oats rotation and MT = Maize-Triticale rotation.