Fig. 4From: Responses of Moringa oleifera to alteration in soil properties induced by calcium nanoparticles (CaNPs) on mineral absorption, physiological indices and photosynthetic indicatorsIndicator of photosynthetic ability. Group: A water (control), group B: 100 mg Ca(NO3)2/kg soil, group C: 100 mg CaNPs/kg soil, group D: 75 mg CaNPs/kg soil, group E: 50 mg CaNPs/kg soil. Bars having different superscripts are significantly different (p < 0.05)Back to article page