Fig. 2From: A comparative evaluation of the effects of seed invigoration treatments with precursor zinc salt and nano-sized zinc oxide (ZnO) particles on vegetative growth, grain yield, and quality characteristics of Zea maysEffect of application of Zn-sources (Zn-salt and ZnONPs) on chlorophyll content (µg cm−2) of maize cv. PMH-1 cultivated under field conditionsBack to article page