Variations in infectivity of indigenous rhizobial isolates of some soils in the rainforest zone of Nigeria

Ojo, Abisoye; Dare, M. O.; Fagbola, O.; Babalola, Olubukola Oluranti

doi:10.1080/03650340.2014.933811

Cited by 7 publications

(7 citation statements)

References 28 publications

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“…The present work indicated that all isolates including the uninoculated control produced the lowest mean NN and NDW in all genotypes at Babile. This was probably due to low rhizobial population in this site (Ojo et al 2015) and this consequently reduced the nodule formation. Low nodulation formation might be also attributed to the prevailed adverse environmental condition at Babile site (Hungria et al 2003).…”

Section: Discussionmentioning

confidence: 99%

Effect of genotypes-Rhizobium-environment interaction on nodulation and productivity of common bean (Phaseolus vulgaris L.) in eastern Ethiopia

Argaw

Muleta

2017

Environ Syst Res

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Background: Effectiveness of Rhizobium inoculation is determined by common bean genotypes. Environmental factors also affect common bean genotypes-Rhizobium-symbiosis. The effect of common bean genotypes-Rhizobium strains-environment interaction on nodulation and common bean production is not well studied. Three genotypes (Dursitu, Gofta, and Kufanzik) and eight selected isolates of common bean nodulating-rhizobia with N-fertilized and control check were used for field experiments at four locations (Babile, Fedis, Haramaya, and Hirna) to evaluate the effect of genotypes-Rhizobium strains-environment interaction on the nodulation, yield and yield traits of common bean. The treatments were laid out in a randomized complete block design with three replications.Results: This study revealed that Rhizobium inoculation, the genotypes, environment and their interaction significantly (P ≤ 0.05) affected all investigated traits of common bean. Common bean genotypes Rhizobium inoculation and experimental locations significantly affected nodule number (NN) and nodule dry weight (NDW). The highest NN and NDW as compared to the uninoculated control across locations were recorded with the genotype Dursitu in all inoculation treatments. However, the result revealed the lowest mean total biomass (TBY) and grain yield (GY) over locations with the same genotype Dursitu. The highest mean grain yields of 3358.89, 3257.82, 1499.25 and 2204.82 kg ha −1 across the treatments were recorded at Haramaya, Hirna, Babile and Fedis sites, respectively, with the genotype Gofta, thereby implying that there was none specificity between common bean genotypes × locations in the study locations of eastern Ethiopia with tested common bean genotypes. None of the tested isolates produced statistically better NN, NDW, TBY, GY and total plant N accumulation consistently in all locations with all tested common bean genotypes, indicating the presence of Rhizobium strains × location specificity. Conclusion: Therefore, the result showed the need for a specific strain of Rhizobium development for common bean production in different locations.

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Section: Discussionmentioning

confidence: 99%

Effect of genotypes-Rhizobium-environment interaction on nodulation and productivity of common bean (Phaseolus vulgaris L.) in eastern Ethiopia

Argaw

Muleta

2017

Environ Syst Res

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“…Soil samples were analysed for pH in water (1:1) as outlined in IITA (1982), soil organic matter using wet dichromate acid oxidation method (Nelson and Sommers, 1982), total nitrogen using Kjeldahl analytical method (Bremmer and Mulvaney, 1982), available phosphorus using Bray-1 method (Bray and Kurtz, 1945), particle size using Bouyoucus hydrometer method (Okalebo et al, 1993), exchangeable Mg, Ca, K and Na extracted using neutral 1M ammonium acetate and determined with spectrophotometer (Okalebo et al, 1993). The rhizobial population count of the three locations was determined as described Ojo et al (2015). The soil biological, chemical and physical characteristics of the three locations are presented in Table 1.…”

Section:  Methods  Location Climates and Soils Of The Experimentalmentioning

confidence: 99%

“…Studies on indigenous rhizobia for N fixing efficiency in soyabean in the forest transition zone of Nigeria are at best scanty. Ojo et al (2015) selected three indigenous rhizobial strains that are highly infective on soybean in the forest transition zone of Nigeria but information on their N fixation efficacy was lacking.…”

Section:  Introductionmentioning

confidence: 99%

Efficacy of Indigenous Rhizobial Strains for Nitrogen Fixation and Yield of Soyabean (Glycine Max (L.) Merill) in the Rainforest Transition Zone

Oyepero¹,

Olajire²

2020

JAES

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Production of efficient indigenous rhizobial inoculants for seed inoculation can improve soyabean yield and biological N fixation. The performance of indigenous rhizobial isolates: TRC2, IDC8, OISa-6e, R25B, IRj1280A on nodulation, N fixation and yield of soyabean varieties TGx1448-2E, TGx1908-1F and TGx1910-2F were studied in three study sites: University of Ibadan Teaching and Research Farm (UITRF), Idi Ayunre (IA) and Orile Ilugun (OI). Low rhizobial count (< 14 cell g-1 soil) of the sites seemed to favour competitiveness of the inoculated strains against resident rhizobial population for nodule occupancy. Nodulation, grain yield and N fixation were increased by inoculation in IA and UITRF. The indigenous isolates OISa-6e and IDC8 showed relatively high level of compatibility with TGx1448-2E at UITRF and IA with significantly (P<0.05) higher nodulation, grain yield and total N fixed compared to uninoculated plants. Minimum increase of 0.4 t/ha in grain yield and 40 kg/ha N in total N fixed were observed when soybean inoculated with OISa-6e and IDC8 were compared with uninoculated control. Variable soil biological and chemical properties of the study sites and soyabean varietal compatibility with rhizobial strain were critical to the efficiency of rhizobial inoculation. The study revealed the potentials of indigenous rhizobial strains for use as inoculants to increase soyabean production.

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“…Therefore, soils have been depleted due to a continuous cropping without soil replenishment as consequence of population pressure (Bashagaluke, 2015). In that case, crop yield depends upon N fixation by native rhizobia that are not always effective (Ojo et al, 2015) thus obtaining low yields, estimated at 0.5 t ha -1 (FAO, 2018).…”

Section: Introductionmentioning

confidence: 99%

Indigenous rhizobia strains: The silver bullet for enhanced biological nitrogen fixation and soybean (Glycine max (L.) Merr. ) yield under different soil conditions in South Kivu province, Democratic Republic of Congo

Nabintu¹,

Ndemo²,

Sharwasi³

et al. 2019

Afr. J. Agric. Res.

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Soybean is an important crop in the Democratic Republic of Congo, a country faced with high levels of war induced malnutrition but its productivity is limited by poor soil fertility coupled with low access to nitrogen mineral fertilizers. Commercial rhizobia strains introduced in 2010 failed to adapt and increase soybeans yields at desired level. We studied the performance of six indigenous rhizobia strains in enhancing soybean productivity compared to two commercial strains USDA110 and SEMIA5019. The study was carried out in the greenhouse and field of Kalambo station of International Institute of Tropical Agriculture (IITA), D. R. Congo during 2016/2017 cropping season. The treatments included: (1) N-, control without inoculation and N-fertilizer; (2) N+, non-inoculated control with 80 kg of N ha −1 ; and inoculated with (3) commercial strain Bradyrhizobium diazoefficiens USDA110; (4) commercial strain Bradyrhizobium elkanii SEMIA5019; (5) local strains Bradyrhizobium japonicum NAC17; (6) NAC22; (7) NAC37, (8) NAC42 (9) NAC 46 and (10) NAC78. Greenhouse and field experiments were laid out as completely randomized design and randomized complete block design respectively. The best inoculation treatments across all experiments were the indigenous strains NAC46 and NAC17 which nodulated equally or better than the commercial strain USDA 110. In the field NAC46 and NAC17 increased soybean grain yield from 2.4 to 3.3 t ha-1 and 3.4 t ha-1 ; indicating the increase of 68.7 and 70.8% respectively, over the commercial strain USDA110. The results demonstrated that indigenous rhizobia NAC46 and NAC17 would thus be the silver bullet to enhanced BNF and soybean yields in South Kivu province of Democratic Republic of Congo.

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Variations in infectivity of indigenous rhizobial isolates of some soils in the rainforest zone of Nigeria

Cited by 7 publications

References 28 publications

Effect of genotypes-Rhizobium-environment interaction on nodulation and productivity of common bean (Phaseolus vulgaris L.) in eastern Ethiopia

Effect of genotypes-Rhizobium-environment interaction on nodulation and productivity of common bean (Phaseolus vulgaris L.) in eastern Ethiopia

Efficacy of Indigenous Rhizobial Strains for Nitrogen Fixation and Yield of Soyabean (Glycine Max (L.) Merill) in the Rainforest Transition Zone

Indigenous rhizobia strains: The silver bullet for enhanced biological nitrogen fixation and soybean (Glycine max (L.) Merr. ) yield under different soil conditions in South Kivu province, Democratic Republic of Congo

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