Fig. 5From: Exploring the synergistic effects of indole acetic acid (IAA) and compost in the phytostabilization of nickel (Ni) in cauliflower rhizosphereEffect of individual and combined application of IAA and compost on chlorophyll contents (A) SPAD value, (B) chlorophyll ‘a’ (mg g− 1 FW), (C) chlorophyll ‘b’ (mg g− 1 FW), and (D) Carotenoid contents (mg g− 1 FW) under Ni stress. Bars displaying same alphabets are statistically non-significant at P < 0.05Back to article page