Applied and Environmental Soil Science

Research Article

Effects of Nitrogen Fertilization and Nitrogen Fixing Endophytic Bacteria Supplementation on Soil Fertility, N Uptake, Growth, and Yield of Sesame (Sesamum indicum L.) Cultivated on Alluvial Soil in Dykes

Table 2

Effects of nitrogen fertilizer levels and nitrogen fixing endophytic bacteria supplementation, Enterobacter spp., on improvement of alluvial soil fertility in dykes cultivated sesame at harvest.


Factors		pH_H2O 1 : 2.5	pH_KCl 1 : 2.5	N_total	NH₄⁺	NO₃⁻	P_available	Bacterialdensity
Factors		—	—	%	mg NH₄⁺ kg⁻¹	mg NO₃⁻kg⁻¹	mgP kg⁻¹	x10⁵ CFUg⁻¹ DSW

Nitrogen fertilizerlevels (A) (%)	0	5.23	4.14	0.18	13.5	15.8^d	56.2	1.57^b
	50	5.23	4.26	0.17	13.7	17.2^c	57.0	1.59^b
	75	5.25	4.19	0.18	13.4	19.0^b	60.3	1.77^a
	100	5.19	4.09	0.17	15.1	20.8^a	58.9	1.87^a

NFEB inoculants (B)(8 × 10⁷ CFU g⁻¹ DSW)	No-NFEB	5.20	4.17	0.17	11.4^b	15.7^c	57.5	0.02^c
	ASD-48	5.25	4.17	0.17	14.0^a	17.4^b	57.6	2.12^b
	ASD-21	5.25	4.22	0.17	15.3^a	17.0^b	60.3	2.07^b
	Mixture	5.21	4.12	0.18	15.0^a	22.5^a	57.0	2.58^a

Significant differences	F (A)	ns	ns	ns	ns		ns
	F (B)	ns	ns	ns			ns
	F (AB)	ns	ns	ns			ns

CV (%)		1.81	4.86	18.1	26.6	9.69	21.6	15.1

In a column, the different superscripts indicate significant differences at 5% (, ), and without letter indicates no significant difference according to Duncan’s post hoc test at 5% level; NFEB: nitrogen fixing endophytic bacteria; No-NFEB: no applied nitrogen fixing endophytic bacteria; Mixture: both ASD-48 and ASD-21; CV: coefficient of variation; DSW: dry soil weight.