Tomato yield and water use efficiency change with various soil moisture and potassium levels during different growth stages - Fig 1

Tomato yield as effected by soil moisture and K supply during vegetative growth (VG, a) stage, flower and fruit setting (FS, b) stage, fruit early growth (FG, c) stage, fruit development (FD, d) stage and fruit maturity (FM, e) stage. W1, W2 and W3 denote three soil moisture levels, i.e., 60–70% θf, 70–80% θf and 80–90% θf, respectively. K1, K2 and K3 denote three K application rates, i.e., 0 g K2O·kg-1 soil, 0.46 g K2O·kg-1 soil and 0.92 g K2O·kg-1 soil, respectively. Error bars indicate standard error of the mean (n = 3 or 2). Fw, Fk and Fw×k are the F values of the variance analysis for soil moisture, K rate and their interaction effect, respectively. The symbol of * and ** indicate significant effect at 0.05 and 0.01 level, respectively.