highly significantp < 0.01
The linear terms A, B and the quadratic terms A 2 , B 2 exerted a highly significant influence on the calcium content ( p < 0.01), while the interaction terms (AC, BC) exerted a significant influence (0.01 < p < 0.05).
The linear terms A, B and the quadratic terms A 2 , B 2 exerted a highly significant influence on the calcium content ( p < 0.01), while the interaction terms (AC, BC) exerted a significant influence (0.01 < p < 0.05).