Table 1.

F-statistics for the effects of N fertilization (N), cultivars (C), and their interactions (N × C) on leaf and grain N, P, and K contents.

Source	Leaf						Grain
	Nitrogen (N)		Phosphorus (P)		Potassium (K)		Nitrogen (N)		Phosphorus (P)		Potassium (K)
	1st Year	2nd Year	1st Year	2nd Year	1st Year	2nd Year	1st Year	2nd Year	1st Year	2nd Year	1st Year	2nd Year
N fertilization (N)	34.01 ***	21.48 ***	22.06 ***	20.10 ***	0.59 ns	1.83 ns	11.49 ***	32.76 ***	2.64 *	0.39 ns	1.36 ns	0.55 ns
Cultivar (C)	3.94 *	1.39 ns	2.74 *	5.60 **	0.56 ns	0.47 ns	1.37 ns	22.33 ***	1.85 ns	8.01 ***	0.50 ns	16.11 ***
N × C	0.29 ns	0.39 ns	0.36 ns	0.56 ns	0.23 ns	1.94 *	0.29 ns	2.05 *	0.53 ns	1.34 ns	0.54 ns	1.60 ns

* p < 0.05, ** p < 0.01, and *** p < 0.001; ns = non-significant.