Figure 6
From: The effect of Palm Oil Mill Effluent Final Discharge on the Characteristics of Pennisetum purpureum

Macronutrients, Cu (i), Fe (ii), Mn (iii) and Zn (iv) concentrations (mg/kg) in stem, leaves and juice of P. purpureum grown on POME FD (treatment) and rain water (control). a,b,c,d,e,fMean significant differences between treatment and control at a different part of plant, at p-value < 0.0001, according to Tukey’s Least Squares Means Test.