The experiment was carried out in a greenhouse located at
Chungnam National University, South Korea. The potting
soil was classified as sandy loam and had the following
characteristics: pH 6.55, 300 mg NH4
+
-N kg-1, 300 mg NO3
-
-N kg-1, 255 mg P2O5 kg-1 (Olsen P), and cation exchange
capacity (CEC) of 10 cmol(+) L-1