Fig. 1
From: An assessment on toxic and essential elements in rice consumed in Colombo, Sri Lanka
Comparison of mean Fe (a), Cu (b), Mn (c) and Zn (d) concentrations in rice varieties (improved, imported, and traditional) collected in 2018 and 2019 from the Colombo district, Sri Lanka. Fe and Cu had significant variety and year effects whereas Mn and Zn had significant variety and variety*year interaction effects, respectively (at 0.05 probability level). In each figure, bars with different letters are significantly different at p < 0.05