Table 4. Amount of inorganic N leached at 50% of N input.

Depth (cm)	Treatments	Rice yield (Mg ha−1)	N input (kg ha−1)	Net leached inorganic N per Mg of rice grains (kg N Mg−1) b	Proportion of net leached inorganic N in total N input (%) a b
	CK	3.6 d	n.a.
	LS	9.4 a	297	0.93 b	2.9 bc
50	B1A1	5.6bc	193	2.69 a	7.9 a
	B2A1	6.9bc	498	2.72 a	3.8 b
	B3A1	7.6 b	802	2.62 a	2.5 c
	CK	3.6	n.a.	n.a.	n.a.
	LS	9.4	297	0.25 a	0.78 a
180	B1A1	5.6	193	0.21 a	0.60 ab
	B2A1	6.9	498	0.26 a	0.36 b
	B3A1	7.6	802	0.34 a	0.32 b

^a“Net N leached” was calculated by subtracting the amount of N leached in the control treatment (CK) from total treatment values.

^bDifferent letters in a column denote a significant difference between treatments at the 0.05 level.