Table 1.

Nutrient solution composition for two N-form treatments.

Fertilizer type*	NH4+:NO3¯ ratios
	100:0	75:25	50:50	25:75	0:100
Ca (NO3)2.NH4.10H2O	–	230 g	–	600 g	930 g
KNO3	–	130 g	–	390 g	510 g
(NH4)2.SO4	990 g	742.5 g	–	247.5 g	–
NH4NO3	–	–	600 g	–	–
CaCl2.2H2O	650 g	490 g	650 g	170 g	–
KCl	372.5 g	379.3 g	372.5 g	93.125 g	–
KH2PO4	272 g	272 g	272 g	272 g	272 g
MgSO4	500 g	500 g	500 g	500 g	500 g

*The concentrations are for making 1000 L of standard nutrient solution with soft water.