Fig. 1
From: Estimating the impact on maize production by the weed Parthenium hysterophorus in Pakistan
Effect of Parthenium hysterophorus density on maize (‘CORTEVA 30K08’) yield and yield components (A: grain yield, B: number of cobs per plot, C: number of cobs per plant, D: number of grains per row; E: number of grains per plot; F: 1000 grain weight). Data were pooled across both years. Blue lines represent the best fit a linear or quadratic models, and grey shadings represent 95% confidence intervals around the fit