Fig. 39From: How does tillage intensity affect soil organic carbon? A systematic reviewBoxplot of difference in SOC stock for NT–HT in full soil profile as affected by soil class. NT no tillage, HT high intensity tillage (see text for explanation). See text for explanation of tillage groups and soil classes (USDA classification). Thick line, median; boxes, interquartile ranges (Q1–Q3); whiskers, non-outlier range; points, outliersBack to article page