Fig. 2

Comparison of the impact of salicylic acid (SA), potassium nitrate (KNO3), and a control for plant height and leaf area index (A), shoot biomass and crop growth rate (B), average tuber weight and tuber diameter (C), and tuber yield (D) in potato cv. Sutlej. The bars represent the standard error (±) of the mean (n = 4). Lettering indicates the differences in the treatment means that was conducted through the least significant difference (LSD) test at P ≤ 0.05 after analysis of variance.