Fig. 4

Effect of leaf harvesting and different water regimes on tuber yield data as fresh and dry in season 2021/22 and season 2022/23, W1 – H1; well-watered with leaf harvest, W1 – H2; well-watered with no leaf harvest, W2- H1; moderate water stress with no leaf harvest; W2- H2; moderate water stress with no leaf harvest, W3-H1; severe water stress with leaf harvest; W3-H2; severe water stress with no leaf harvest. Genotypes V1 = ENDURANCE, V2 = LINE 2; Error bars represent standard errors of the means. The letters above the error bars indicate significant differences (P < 0.05).