Table 1.

Combination of factors and levels in each treatment.

Processing number	Fertilization level (kg hm-2)
	N	P	K
N0P0K0	0	0	0
N0P2K2	0	500	400
N1P2K2	300	500	400
N2P0K2	600	0	400
N2P1K2	600	250	400
N2P2K2	600	500	400
N2P3K2	600	750	400
N2P2K0	600	500	0
N2P2K1	600	500	200
N2P2K3	600	500	600
N3P2K2	900	500	400
N1P1K2	300	250	400
N1P2K1	300	500	200
N2P1K1	600	250	200

N₀, N₁, N₂, and N₃ denote four N applications, 0, 300, 600, and 900 kg.hm^-2, P₀, P₁, P₂, and P₃ denote four phosphorus applications, 0, 250, 500, and 750 kg hm^-2, and K₀, K₁, K₂, and K₃ denote four potassium applications, 0, 200, 400, and 600 kg hm^-2, respectively.