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

Table 7

Nitrogen recovery efficiency of rice as affected by N fertilizer and legume residue.

N (g m^−2)		Nitrogen recovery efficiency (%)
		Rice after bush bean		Rice after long bean		Rice after mung bean
2010	2011	2010	2011	2010	2011	2010	2011
0	0	0.0^c	0.0^d	0.0^c	0.0^d	0.0^c	0.0^d
4	0	28.8^a	27.5^a	28.8^a	27.5^a	27.5^a	25.0^b
8	0	29.5^a	23.8^b	29.4^a	23.8^b	28.8^a	28.8^a
12	0	19.6^b	20.0^c	19.6^b	20.0^c	20.0^b	20.0^c
N (g m^−2)		Nitrogen recovery efficiency (%)
		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^c	0.0^d
4	0	32.5^a	30.0^a	10.0^b	9.8^b	25.5^a	20.0^a
8	0	20.0^b	18.8^b	16.3^a	11.1^a	25.0^a	16.3^b
12	0	15.0^c	13.3^c	15.0^a	12.4^a	18.3^b	13.3^c

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