. 2023 Feb 6;14:1060239. doi: 10.3389/fmicb.2023.1060239

Table 2.

Effect of inoculation on growth and nitrogen content of water yam cv. A-19.

WAP	Treatment	Leaf area (cm² plant⁻¹)	SPAD (plant⁻¹)	Leaf dry weight (g plant⁻¹)	Stem dry weight (g plant⁻¹)
8	Pre- inoculation	1174.4 ± 143.3	32.8 ± 3.2	2.8 ± 0.2	2.5 ± 0.4
16	T0	1933.1 ± 447.3^ns	36.7 ± 3.9^ns	6.5 ± 1.6^ns	5.8 ± 1.3^ns
16	T1	2052.4 ± 146.6	39.7 ± 3.9	6.5 ± 0.8	6.1 ± 0.7
20	T0	2510.5 ± 475.3^ns	37.8 ± 9.2^ns	9.9 ± 1.6^ns	7.5 ± 1.5^ns
20	T1	2645.3 ± 451.8	42.0 ± 5.9	10.5 ± 1.7	8.7 ± 1.2
WAP	Treatment	Root dry weight (g plant⁻¹)	Tuber dry weight (plant⁻¹)	Plant N content (%)	N uptake (mg plant⁻¹)
8	Pre-inoculation	2.0 ± 0.3	–	1.8 ± 0.3	137.1 ± 42.7
16	T0	5.5 ± 1.4^ns	–	1.5 ± 0.1^ns	248.3 ± 53.0^ns
16	T1	6.6 ± 1.9	–	1.5 ± 0.2	285.8 ± 22.4
20	T0	7.2 ± 2.1^ns	1.3 ± 0.8^ns	1.3 ± 0.2^ns	334.4 ± 24.0^ns
20	T1	6.3 ± 0.6	0.4 ± 0.2	1.4 ± 0.3	335.2 ± 57.8

Values represent means followed by the standard deviation. “ns” indicates no significant difference on the same sampling date according to the T test (p = 0.05). WAP, weeks after planning.