TABLE 1.

Results of growth chamber trials for S. lydicus WYEC108-colonized and noncolonized pea plants after 30 days (n = 15)

Response variable	Value for variable (mean ± SD)		t ratio	P
	Control	Test
Avg shoot length (cm)	32.37 ± 8.31	59.5 ± 15.91	−3.74	0.0032
Avg root length (cm)	9.08 ± 5.97	16.20 ± 6.43	−2.07	0.0631
Avg plant wet wt (g)	1.59 ± 0.37	2.56 ± 0.56	−3.69	0.0039
Avg root wet wt (g)	0.44 ± 0.27	0.84 ± 0.41	−2.05	0.067
Avg no. of nodules	7.33 ± 4.18	29.14 ± 16.77	−3.09	0.0103
Avg nodule wet wt (g)	0.004 ± 0.003	0.037 ± 0.023	−3.45	0.0055
Avg nitrogenase activity (μmol of ethylene produced/h/plant)	0.47 ± 0.43	52.08 ± 3.39	−36.98	0.0001