Significant differences were found in Mehlich-3 soil extracts at
the three sites for macronutrients but not for micronutrients or
trace elements (Tables 5 and 6). The levels of P, K, Ca and Mg were
different among the five treatments, with the MSW3 treatment
producing the highest values of most macronutrients at all three
sites; in addition, often the MSW2 rate had higher values of K and
Ca than the control treatment