Table 2.

Maize grain yields (q/ha) after inoculation (I) and no inoculation (NI) of seeds with A. lipoferum CRT1.

	FC		L		C		Corg
	NI	I	NI	I	NI	I	NI	I
2014	96.5 ± 3.1a	104.1 ± 4,5b	89.5 ± 13.9a	91.0 ± 8.7a	87 ± 8a	77.6 ± 6.6b	—	—
2015	62.9 ± 8.5a	56.6 ± 7,1b	75.6 ± 5.3a	84.1 ± 6.7b	69.0 ± 5.6a	79.7 ± 4.2a	77.5 ± 4.3a	79.8 ± 3.4a

Sub-plots received no nitrogen fertilization in the four fields (FC, L, C, Corg) during the two years of the study. Grain yields are expressed in q/ha. Letters a/b above numbers refer to significance classes at p < 0.05 after two-by-two comparisons between PGPR-inoculated and mock-inoculated conditions (n = 5). Non-parametric Wilcoxon tests were run using blocs as a random variable.