Tropical Legume Crop Rotation and Nitrogen Fertilizer Effects on Agronomic and Nitrogen Efficiency of Rice

Table 8

Nitrogen agronomic efficiency (g g⁻¹) of rice as affected by N fertilizer and legume residues.

N (g m^−2)		Nitrogen agronomic efficiency (g g^−1)
		Rice after bush bean		Rice after long bean		Rice after mung bean
2010	2011	2010	2011	2010	2011	2010	2011
0	0	0.0^d	0.0^d	0.0^d	0.0^c	0.0^d	0.0^d
4	0	13.0^a	12.5^a	21.2^a	17.1^a	14.8^a	12.9^a
8	0	10.7^b	9.7^b	15.1^b	11.4^b	12.6^b	11.4^b
12	0	7.4^c	6.5^c	12.8^c	11.1^b	8.3^c	7.8^c
N (g m^−2)		Nitrogen agronomic efficiency (g g^−1)
		Rice after winged bean		Rice after corn		Rice after fallow
2010	2011	2010	2011	2010	2011	2010	2011
0	0	0.0^d	0.0^d	0.0^c	0.0^c	0.0	0.0^d
4	0	26.9^a	23.6^a	14.7^a	16.3^a	21.2^a	13.8^b
8	0	16.3^b	14.7^b	15.5^a	14.3^b	18.7^b	15.1^a
12	0	12.2^c	12.5^c	13.3^b	12.2^b	15.2^c	11.4^c

Means followed by the same letters are not significantly different for each treatment mean (𝑃<0.05).