Fig. 1From: Toxicity of ZnO and Fe2O3 nano-agro-chemicals to soil microbial activities, nitrogen utilization, and associated human health risksEffect of IONPs and ZONPs on (a) soil microbial biomass Fe/Zn after application PM (b) viable counts of bacteria and fungi. Error bars represent the standard error ( ±) of the mean. Bars carrying different letters are significantly different at a 5% probability levelBack to article page