Co-inoculation of Bradyrhizobium japonicum and Azospirillum brasilense on the physiological quality of soybean seeds

Libório, Paloma Helena da Silva; Bárbaro-Torneli, Ivana Marino; Nogueira, Marco Antônio; Unêda-Trevisoli, Sandra Helena; Agronegócios, Agência Paulista de Tecnologia dos

doi:10.5433/1679-0359.2020v41n6supl2p2937

Cited by 2 publications

(3 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the joint analysis of the total number of nodules per plant, the treatments with 200 mL ha -1 (seed or in-furrow) and 300 mL ha -1 applied in-furrow did not differ statistically from each other but surpassed the treatment with 100 mL 50 kg -1 seed with both the standard and the mixed inoculants (Table 4). These results corroborate the reports of Groppa et al (1998) and Libório et al (2020) that point out favorable influences of A. brasilense on soybean nodules.…”

Section: Resultssupporting

confidence: 92%

“…N fertilization reduced the dry nodule mass in the Colina-SP and Selvíria-MS areas, which was expected due to the contribution of mineral N. In Maringá-PR, the lowest mass of nodules per plant was observed in control (without inoculant and mineral N) due to the lower number of nodules in these plants. A study of in-furrow co-inoculation with several soybean cultivars revealed an increased number of nodules from 36.9 in control to 44.4 nodules per plant on average with the co-inoculation (Libório et al, 2020). In general, the supply of 200 kg ha -1 of mineral N showed inferior results regarding the number and mass of nodules (Table 4).…”

Section: Resultsmentioning

confidence: 97%

“…Concerning nutrients, greater plant vigor is also observed (Ardakani et al, 2011). Azospirillum brasilense positively influences soybean nodules, improving their BNF efficiency (Groppa et al, 1998;Libório et al, 2020). Improvements in soybean agronomic traits were attributed to the positive influence of co-inoculation (Hungria et al, 2013;Embrapa, 2013;Hungria et al, 2015;Bárbaro et al, 2017Bárbaro et al, , 2018aBárbaro et al, , 2018bDourado et al, 2018;Galindo et al, 2018).…”

Section: Introductionmentioning

confidence: 98%

See 2 more Smart Citations

Combination of Azospirillum and Bradyrhizobium on Inoculant Formulation Improve Nitrogen Biological Fixation in Soybean

Picoli¹,

Pasquetto²,

Muraoka³

et al. 2022

JAS

View full text Add to dashboard Cite

Co-inoculation in soybean with Azospirillum brasilense and Bradyrhizobium spp. is a consolidated practice to ensure nitrogen supply and maximize productivity and sustainability. This study aimed to evaluate the agronomic efficiency of the co-inoculation in soybean, via seed or in-furrow, of doses of the mixed inoculant containing Bradyrhizobium spp. and A. brasilense in the same formulation. The experiments were conducted under field conditions in four different edaphoclimatic regions to compare seven treatments: Control without nitrogen (N) and inoculant (T1), 200 kg ha-1 of mineral N fertilizer (T2), 100 mL of standard liquid inoculant of Bradyrhizobium spp. (T3) in 50 kg-1 seeds, 100 mL (T4) or 200 mL (T5) of the mixed liquid inoculant in 50 kg-1 seeds, 200 mL (T6) or 300 mL (T7) ha-1 of the mixed inoculant applied in-furrow. Nodulation characteristics (number and mass of nodules) and carbon and N metabolism (dry mass, N content, and N accumulation in the aerial part) were evaluated at the phenological stage R2 (full flowering—there is an open flower at one of the two uppermost nodes). At maturity (R8—full maturity—95% of the pods have reached their full mature color), yield, the mass of 1,000 grains, N content in the grains, and grain N export were measured. The data were submitted to analysis of variance using the F test and comparison of means was performed using the Duncan test (5%). Under field conditions, the mixed inoculant at doses of 200 mL 50 kg-1 seed or 300 mL ha-1 applied in-furrow were equivalent or superior to the standard inoculant for the total number of nodules, N content in the grains, grain N export, productivity, and mass of 1,000 grains. The use of the mixed inoculant containing Bradyrhizobium spp. and A. brasilense in the same formulation meets the demand of grain N export and resulted in increases of 28%, 18% and 7.4% in soybean productivity compared with control without nitrogen, mineral N fertilizer and standard liquid inoculant of Bradyrhizobium spp. respectively.

show abstract

Section: Resultssupporting

confidence: 92%

Section: Resultsmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 98%

See 1 more Smart Citation

Combination of Azospirillum and Bradyrhizobium on Inoculant Formulation Improve Nitrogen Biological Fixation in Soybean

Picoli¹,

Pasquetto²,

Muraoka³

et al. 2022

JAS

View full text Add to dashboard Cite

show abstract

Microbial inoculants as a means of improving soil and crop yields

Khomina,

Lapchynskyi,

Pustova

et al. 2024

Scientific Horizons

View full text Add to dashboard Cite

The article presented the results of studies of the influence of microbial inoculants Rhizobium japonicum and Azospirillum brasilense on the growth and development of soybean (Glycine max) at the initial stages of its development. The study was conducted on three experimental plots: a control plot without treatment, a plot with Rhizobium japonicum inoculum and a plot with Azospirillum brasilense inoculum. The main indicators were evaluated: plant height, number of leaves, root system development and total biomass at different stages of plant growth, as well as laboratory analysis of nitrogen content in plant tissues. The results of the study showed that the inoculants had a significant impact on all measured parameters compared to the control plot. In particular, the plants in the plot with Rhizobium japonicum showed 50% higher growth and development of the root system, which was confirmed by the formation of root nodules responsible for nitrogen fixation. Azospirillum brasilense also improved plant growth and root system development, but its effect was less pronounced compared to Rhizobium japonicum. Nitrogen content analysis showed that plants in the Rhizobium japonicum plot had 45% higher tissue nitrogen content compared to the control plot, indicating effective nitrogen fixation. In plants treated with Azospirillum brasilense, the nitrogen content was also 25% higher, but without nodule formation, the effect was less pronounced. The aim of the study was to evaluate the effectiveness of microbial inoculants in improving plant growth and development in the early stages of vegetation, to investigate their effect on root system productivity, nitrogen uptake and total plant biomass, and to determine the optimal conditions for maximising the impact of inoculants in agricultural conditions. The results emphasised the importance of using microbial inoculants to increase soybean productivity and resistance in the early stages of its development. The application of Rhizobium japonicum provided a greater increase in biomass, root system and nitrogen assimilation, which makes this inoculant more effective than Azospirillum brasilense

show abstract

Co-inoculation of Bradyrhizobium japonicum and Azospirillum brasilense on the physiological quality of soybean seeds

Cited by 2 publications

References 22 publications

Combination of Azospirillum and Bradyrhizobium on Inoculant Formulation Improve Nitrogen Biological Fixation in Soybean

Combination of Azospirillum and Bradyrhizobium on Inoculant Formulation Improve Nitrogen Biological Fixation in Soybean

Microbial inoculants as a means of improving soil and crop yields

Contact Info

Product

Resources

About