Indigenous rhizobia population influences the effectiveness of Rhizobium inoculation and need of inorganic N for common bean (Phaseolus vulgaris L.) production in eastern Ethiopia

Argaw, Anteneh; Tsigie, Angaw

doi:10.1186/s40538-015-0047-z

Chemical and Biological Technologies in Agriculture

Table 4 Total biomass yield, grain yield and total plant tissue N of common bean var. Dursitu along different rates of N application with and without inoculation of Rhizobium leguminosarum bv. Phaseoli at selected areas of eastern Ethiopia

From: Indigenous rhizobia population influences the effectiveness of Rhizobium inoculation and need of inorganic N for common bean (Phaseolus vulgaris L.) production in eastern Ethiopia

Treatments	TBY			GY			PTTN
Treatments	Soil type 1	Soil type 2	Soil type 3	Soil type 1	Soil type 2	Soil type 3	Soil type 1	Soil type 2	Soil type 3
Control	2055.6ef	2077.8c	4917.6c	1025.65f	1082.13cd	1946.05bc	2.3800de	2.5200c	4.0983ab
20 kg N ha⁻¹	2277.8def	4018.5ab	5609.5bc	1254.35e	1270.19bc	2121.48abc	3.2433a	3.5533b	4.5300ab
40 kg N ha⁻¹	2631.5cd	4333.3a	6351.4abc	1568.52c	1307.13bc	2262.27ab	2.8533abcd	3.7800ab	4.6533a
60 kg N ha⁻¹	3131.5abc	4055.6a	6481.5abc	1727.63bc	1289.44bc	2207.04abc	2.5567bcde	3.6933ab	4.0767ab
80 kg N ha⁻¹	3082.4bc	4388.9a	6721.8ab	1674.26bc	1280.46bc	2380.60a	2.5167cde	3.8600ab	4.2900ab
100 kg N ha⁻¹	3260.8ab	4374.1a	6742.8ab	1830.09b	1454.26ab	2416.44a	3.1567abc	4.2000a	4.1200ab
Rhizobium sp.	1787.0f	3133.3b	5472.6bc	996.39f	1005.37d	1941.67c	2.1600e	3.3833b	4.0517ab
Rhizobium sp. + 20 kg N ha⁻¹	2148.1def	4087.0a	7405.6a	1302.22de	1258.70bc	2169.17abc	3.1800ab	3.3633b	4.1867ab
Rhizobium sp. + 40 kg N ha⁻¹	2498.1de	4249.2a	6668.1ab	1211.48ef	1569.72a	2381.16a	2.6567abcde	3.6800ab	4.0800ab
Rhizobium sp. + 60 kg N ha⁻¹	3375.4ab	4277.8a	6851.6ab	1697.59bc	1461.85ab	2366.06a	2.7000abcde	3.8200ab	4.0033ab
Rhizobium sp. + 80 kg N ha⁻¹	3421.4ab	4462.2a	6486.1abc	1511.57cd	1571.57a	2240.34abc	3.2000ab	3.9200ab	3.9467ab
Rhizobium sp. + 100 kg N ha⁻¹	3648.1a	4740.7a	7222.2a	2089.54a	1653.89a	2329.40a	3.0133abcd	3.8767ab	3.7583b
Mean	2776.48	4016.54	6410.89	1490.78	1350.39	2230.14	2.8014	3.6375	4.1496
F value	32.12***	16.30***	4.95***	57.11***	19.75***	5.99***	8.10***	14.64***	1.73 ns
LSD	557.86	913.75	15,380.6	226.81	226.53	318.67	0.6467	0.5621	0.8943
CV (%)	6.82	7.73	12.56	5.17	5.70	7.28	7.84	5.25	10.98

Means in the same column followed by the same letter are not significantly different at the 5 % probability level by Tukey’s test
NS non-significant, TBY total biomass yield, GY grain yield, PTTN plant total tissue N
* Significant at 0.05; ** significant at 0.01; *** significant at 0.001

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