Figure 2.

Absolute and relative growth rates of plant height—AGR_PH and RGR_PH (A,B), stem diameter—AGR_SD and RGR_SD (C,D), and leaf area—AGR_LA and RGR_LA (E,F) of cotton plants as a function of the interaction between salinity levels of irrigation water—ECw and hydrogen peroxide concentrations—H₂O₂, in the period 35–110 days after sowing. X and Y—Electrical conductivity of water—ECw and concentration of hydrogen peroxide—H₂O₂, respectively. ns, *, **—not significant, significant at p ≤ 0.05, and significant at p ≤ 0.01 by F-test, respectively.