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Table 3 Treatment means for mineral concentrations (dry weight) of lettuce grown in soil 1 from the 1st and the 2nd growing cycles

From: Effect of biochar derived from faecal matter on yield and nutrient content of lettuce (Lactuca sativa) in two contrasting soils

  1. Cu and Zn in mg/kg; all other nutrients in g/kg
  2. Mean of four replicates. Mean value followed by different letters in the shaded block for each variable significantly differ at the 5% level, according to the adjusted turkey test