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

Table 1

Biomass yield of bush bean, long bean, mung bean, winged bean, and corn as affected by nitrogen fertilizer.

Nitrogen		Biomass yield (g m^−2)
(g/m^2)		Bush bean		Long bean		Mung bean		Winged bean		Corn*
2010	2011	2010	2011	2010	2011	2010	2011	2010	2011	2010	2011
0 0*	0	148.2^c	140.1^c	138.4^c	136.8^b	134.9^c	131.6^c	179.8^b	169.4^b	462.5^d	449.5^d
2 4*	0	155.7^b	149.8^b	145.9^b	140.7^b	145.0^b	141.7^b	187.3^ab	184.7^a	537.5^c	514.7^c
4 8*	0	165.5^a	156.4^a	155.7^a	149.2^a	151.5^b	148.2^b	190.6^a	187.6^a	579.8^b	560.3^b
6 12*	0	170.0^a	162.9^a	161.9^a	155.7^a	158.3^a	157.7^a	197.2^a	193.2^a	635.2^a	602.6^a

Means followed by the same letters are not significantly different for each treatment mean (𝑃<0.05).
∗Denotes N fertilizer rate for corn in 2010.