Figure 5 in Does narrow row spacing suppress weeds and increase yields in corn and soybean? A meta-analysis

Figure 5. The individual effect sizes (natural log of response ratios [lnðRRÞ]) of (A) weed density, (B) weed biomass,(C) weed control, (D) weed seed production, and (E) crop yield as a function of crop row spacing. The green and red dots represent individual effect sizes for corn and soybean, respectively. The horizontal black dashed line represents zero effect,while the vertical black line represents 76-cm row spacing (control).The black bold line shows the relationship between individual effect sizes and crop row spacing,which is given as R (Pearson's correlation) with a P-value. The gray-shaded area represents 95% confidence intervals (CIs) of the linear relationship.