Nitrogen Fixation with Soybean: The Perfect Symbiosis?

Hungría, Mariangela; Mendes, I. C.

doi:10.1002/9781119053095.ch99

Cited by 145 publications

(199 citation statements)

References 99 publications

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“…Consequently, it has resulted in an increased competitiveness of this commodity in the world market. This is possible because the bacterial BNF contributes sufficiently to a high soybean production, in addition to replace the N mineral fertilization (Hungria, Franchini, Campo & Graham, 2005;Hungria & Mendes, 2015). However, the bacterial BNF efficiency depends on various edaphoclimatic factors, especially in the tropical regions.…”

Section: Introductionmentioning

confidence: 99%

“…However, the bacterial BNF efficiency depends on various edaphoclimatic factors, especially in the tropical regions. Moreover, management practices such as treatment with fungicides prior to inoculation also interfere in the bacterial BNF efficiency (Hungria, Campo & Mendes, 2007;Campo, Araújo, Mostasso & Hungria, 2010;Zilli, Gianluppi, Campo, Rouws & Hungria, 2010;Hungria & Mendes, 2015).…”

Section: Introductionmentioning

confidence: 99%

“…Bacteria of the Bradyrhizobium genus enter the root via infection of the root hairs, forming nodules (Hungria & Mendes, 2015).…”

Section: Introductionmentioning

confidence: 99%

“…The use of Bradyrhizobium nitrogen fixing bacteria is currently indispensable to grow soybean in the Brazilian fields (Hungria & Mendes, 2015). The efficiency of these microbes has enabled high grain yields, dispensing mineral nitrogen (Alves, Boddey & Urquiaga, 2003).…”

Section: Introductionmentioning

confidence: 99%

“…The BNF occurs in a sequence of processes that begins with the bacteria adaptation to the plant and culminates with the atmospheric N 2 fixation (Hungria & Mendes, 2015). Nodulation begins about 2h after contact between bacteria and roots.…”

Section: Introductionmentioning

confidence: 99%

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Biological nitrogen fixation and agronomic features of soybean (Glycine max (L.) Merr.) crop under different doses of inoculant

Pedrozo¹,

Oliveira²,

Alberton³

2018

Acta Agron.

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Soybean is one of the most important crops in the world and presents great versatility. This study aims to investigate the effect of the Bradyrhizobium japonicum inoculant at 0, 600 and 1200 mL ha -1 on soybean crop, with and without 1 L ha -1 calcium (Ca 41%) + 0.4 L ha -1 boron (B 14%). Plants were grown for 90 days in plastic pots with 3 kg of sand and vermiculite (v/v) autoclaved at 121 o C for 1 h. The experiment was conducted in a completely randomized design with five replications in a greenhouse. Soybean yield parameters were evaluated, such as, dry weight of shoot, root and total; plant height, nitrogen in the shoot; number and dry weight of nodules; chlorophyll index in the leaves; number of pods per plant (NPPL); number of grains per pod (NGP); and number of grains per plant (NGPL). The addition of Ca + B increased significantly NPPL, NGPL and NGP. The NPPL, NGPL were significantly increased with 600 mL ha -1 of the inoculant. The dose of 600 mL ha -1 of the inoculant combined with Ca+B significantly stimulated NPPL, NGPL and NGP. It is concluded that the productivity of soybean was increased with addition of 600 mL ha -1 inoculant, in combination with Ca and B.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…Bacteria of the Bradyrhizobium genus enter the root via infection of the root hairs, forming nodules (Hungria & Mendes, 2015).…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Biological nitrogen fixation and agronomic features of soybean (Glycine max (L.) Merr.) crop under different doses of inoculant

Pedrozo¹,

Oliveira²,

Alberton³

2018

Acta Agron.

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Biological Nitrogen Fixation

Bruijn¹,

Hungría²

2022

Good Microbes in Medicine, Food Production, Biotechnology, Bioremediation, and Agriculture

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Effects of growth‐promoting bacteria on soybean root activity, plant development, and yield

et al. 2020

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Rhizobia and other plant growth‐promoting rhizobacteria (PGPR) have been broadly used as inoculants in agriculture, resulting in morphofunctional improvements in roots and grain yield. This study was carried out during two cropping seasons under field and greenhouse conditions in Brazil to verify the effects of inoculation of two soybean cultivars with PGPR and secondary microbial metabolites (SMMs) on root activity and nodulation, plant development, and grain yield. Inoculation and co‐inoculation treatments consisted of Bradyrhizobium japonicum strain SEMIA 5079 and B. diazoefficiens strain SEMIA 5080 inoculated together, in combination with Bacillus subtilis strain QST 713, Azospirillum brasilense strains Ab‐V5 and Ab‐V6, and SMMs extracted from B. diazoefficiens strain USDA 110 and Rhizobium tropici strain CIAT 889. Root systems were evaluated by direct (optical reading) and indirect (rubidium nitrate application, 85RbNO3) methods. Increases of up to 1.6% in root diameter (0.01‐ to 0.5‐mm class), 28.5% in length, 19.7% in root volume, 17.8% in root surface area, 29% in the number of nodules, 27.2% in nodule dry weight, 13.5% in root dry weight, and 3.8% in shoot dry weight. Greater exploration and activity within and between rows following inoculation at up to 40 and 10 cm in depth, respectively, were observed in plants co‐inoculated with the standard inoculation (only Bradyrhizobium spp.) + SMMs + A. brasilense, resulting in a yield increase of 485 kg ha−1. The results emphasize the biotechnological potential of using secondary metabolites of rhizobia with inoculants containing rhizobia and PGPR to improve the growth and soybean yield in tropical conditions.

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Nitrogen Fixation with Soybean: The Perfect Symbiosis?

Cited by 145 publications

References 99 publications

Biological nitrogen fixation and agronomic features of soybean (Glycine max (L.) Merr.) crop under different doses of inoculant

Biological nitrogen fixation and agronomic features of soybean (Glycine max (L.) Merr.) crop under different doses of inoculant

Biological Nitrogen Fixation

Effects of growth‐promoting bacteria on soybean root activity, plant development, and yield

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