Table 7.

Effect of silicon and paclobutrazol on macronutrients in leaf and aboveground plant samples of rice MR219.

Treatment	Content (%)
	Leaf					Aboveground
	N	P	K	Ca	Mg	N	P	K	Ca	Mg
C	3.38 ± 0.43	0.27 ± 0.02	2.33 ± 0.87	0.26 ± 0.15c	0.18 ± 0.08	2.22 ± 0.53	0.33 ± 0.01	3.28 ± 0.25a	0.12 ± 0.02	0.33 ± 0.03
4	3.64 ± 0.71	0.28 ± 0.00	2.85 ± 0.39	0.24 ± 0.11c	0.20 ± 0.06	2.31 ± 0.43	0.31 ± 0.03	3.35 ± 0.36a	0.13 ± 0.01	0.31 ± 0.02
6	3.47 ± 0.95	0.27 ± 0.03	3.05 ± 0.63	0.27 ± 0.14bc	0.19 ± 0.08	2.22 ± 0.58	0.31 ± 0.06	3.34 ± 0.59a	0.12 ± 0.03	0.31 ± 0.03
4T	3.31 ± 0.35	0.25 ± 0.01	2.81 ± 0.47	0.34 ± 0.19a	0.21 ± 0.07	2.03 ± 0.05	0.29 ± 0.02	3.07 ± 0.37a	0.15 ± 0.04	0.29 ± 0.01
6T	3.11 ± 0.63	0.26 ± 0.03	2.76 ± 0.22	0.33 ± 0.16ab	0.20 ± 0.07	2.02 ± 0.43	0.30 ± 0.03	3.02 ± 0.37a	0.16 ± 0.01	0.30 ± 0.01
PBZ	3.48 ± 0.64	0.29 ± 0.02	2.73 ± 0.67	0.28 ± 0.14abc	0.22 ± 0.07	2.14 ± 0.02	0.35 ± 0.02	2.60 ± 0.29b	0.13 ± 0.02	0.35 ± 0.02
LSD	ns	ns	ns	0.064	ns	ns	ns	0.408	ns	ns
	N		P		K		Ca		Mg
Aboveground	2.16 ± 0.36b		0.31 ± 0.03a		3.11 ± 0.42a		0.13 ± 0.03b		0.15 ± 0.02b
Leaf	3.4 ± 0.57a		0.27 ± 0.02b		2.75 ± 0.54b		0.29 ± 0.13a		0.20 ± 0.06a
Pr > F	***		***		***		***		**

Means with same letter in the same column are not significantly different at p ≤ 0.05 according to Fisher's least significant difference (LSD). C, control; 4, 4 g Si/pot; 6, 6 g Si/pot; PBZ, PBZ only; 4T, 4 g Si+ 400 ppm PBZ; 6T, 6 g Si+ 400 ppm PBZ.

^**P ≤ 0.01,

^***P ≤ 0.001. ns, not significant.