| 
      Different superscripts in a column indicate significant difference (P<0.05)
        | Treatment | ß coefficient | Intercept (a) | r2 | R |  
        | 0 | 2. 354ab | 3.022 | 0.609 | 0.780 |  
        | 40 mgMT/Kg | 2.642ab | 3.653 | 0.742 | 0.861 |  
        | 60 mgMT/kg | 2.083b | 2.386 | 0.571 | 0.756 |  
        | 90 mgMT/kg | 1.547a | 1.205 | 0.821 | 0.906 |  |