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. 2020 Jan 24;10:1147. doi: 10.1038/s41598-020-58169-2

Figure 5.

Figure 5

(a) The number of kernels per cob (KC), (b) 1000-grain weight (GW), (c) grain yield (GY) and (d) biological yield (BY) of maize plants affected by the application of optimized doses of sulfate fertilizers (K2SO4, FeSO4, CuSO4 and Na2SO4) under normal (100% WHC) and drought stress (30% WHC) conditions. The mean values with different letters indicate significant difference (P ≤ 0.05), according to post hoc Tukey’s test.