Symbiotic N₂-Fixation Estimated by the ¹⁵N Tracer Technique and Growth of Pueraria phaseoloides (Roxb.) Benth. Inoculated with Bradyrhizobium Strain in Field Conditions

Table 3

Effect of bradyrhizobial inoculation on plant N status after 4-month growth.

Treatments	%N			^15N atom% excess			Total N (g/m^2)
	Shoot	Root	Nodule	Shoot	Root	Nodule	Shoot	Root	Nodule
I. Pueraria	2.71	1.18b	4.8	0.615a	0.773	0.474	1.743b	0.042	0.033
NI. Pueraria	2.73	1.20b	4.3	0.742a	0.893	0.485	0.953a	0.027	0.013
Ipomoea	2.56	0.69a		0.995b	0.880		0.783a	0.084
Sign. Trait ()	ns		ns		ns	ns		ns	ns

I. Pueraria = inoculated Pueraria, NI. Pueraria = noninoculated Pueraria, Sign. Trait = significant trait at 5% probability level, and ns = nonsignificant; significant at , significant at . One-way ANOVA was performed using CropStat ver. 7.2.
In a column, values with different letters (a, b) are statistically different at the indicated significant trait.