Agronomic efficiency of Bradyrhizobium pre-inoculation in association with chemical treatment of soybean seeds

Silva, Krisle da; Silva, Edmilson Evangelista da; Farias, Eliane do Nascimento Cunha; Chaves, Josimar da Silva; Albuquerque, Christian Nilton Batista; Cardoso, Carina

doi:10.5897/ajar2018.13016

Cited by 11 publications

(4 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The long-term viability of cell survival on inoculated seeds depends on adhesives and cell protectors in the formulation (Hungria et al, 2005;Santos et al, 2019;Santos, Hungria, & Nogueira, 2017). Nowadays, some inoculants commercialized in Brazil and in other South American countries have been used for preinoculation from few (5) to several (60) days (Anguinoni et al, 2017;Araujo et al, 2017;Machineski, Scaramal, Matos, Machineski, & Colozzi Filho, 2018;Silva et al, 2018;Zilli, Campo, & Hungria, 2010); however, in general, the number of surviving cells at sowing time is far below the minimum to provide early and effective nodulation, and…”

Section: Introductionmentioning

confidence: 99%

Seed pre‐inoculation with Bradyrhizobium as time‐optimizing option for large‐scale soybean cropping systems

et al. 2020

View full text Add to dashboard Cite

Nitrogen is a key nutrient for soybean cropping and can be fully supplied by the biological nitrogen fixation (BNF) process. Inoculation with elite Bradyrhizobium strains greatly improves the supply of N to soybean; however, inoculation of large areas in short-sowing windows delays the sowing process, demanding the development of technologies for pre-inoculation. Here we report the evaluation of a liquid formulation containing cell protectors that proved, in four field experiments located in different edaphoclimatic conditions of Brazil, symbiotic performance comparable to the peat-based inoculant, traditionally considered as the best carrier. The liquid inoculant was also effective when applied to seeds not treated with pesticides 15 days before sowing, providing efficient BNF and timeflexibility to the farmers. Benefits of the liquid inoculant in improving grain yield were confirmed in two areas cropped for the first time and devoid of Bradyrhizobium, with an average increase of 89%, and also in two areas traditionally cropped with inoculated soybean, with an average increase of 6.8%, both in comparison to the non-inoculated control without N-fertilizers (NI). It is worth mentioning that, also in comparison to the NI control, the addition of 200 kg N ha −1 impacted grain yield in +54% and −1,8%, in new and traditional areas, respectively, indicating that BNF was more effective than the application of N-fertilizer. Large increases in total N content in grains were observed as well in response to the liquid inoculant, on average 47% and 27%, when compared to the NI and NI + N controls, respectively.

show abstract

Section: Introductionmentioning

confidence: 99%

Seed pre‐inoculation with Bradyrhizobium as time‐optimizing option for large‐scale soybean cropping systems

et al. 2020

View full text Add to dashboard Cite

show abstract

“…Several studies had reported the effectiveness of the pre-inoculation technology in soybean crop for five days before sowing (Zilli et al, 2016), up to 10 days (Anghinoni et al, 2017;Silva et al, 2018) and up to 30 days before sowing (Araujo et al, 2017). However, this study is the first to report the efficacy of pre-inoculation of soybean seeds for up to 60 days before sowing.…”

Section: Discussionmentioning

confidence: 71%

“…Positive results in soybean grain yield with pre-inoculation technology have already been found in other studies. Silva et al (2018) also observed that even with a drastic reduction in numbers of cells with chemical treatmens of the seeds, pre-inoculation 10 days before sowing did not reduce nodulation nor grain yield. Zilli et al (2016) verified that the pre-inoculation five days before sowing had a similar performance to the standard inoculation.…”

Section: Discussionmentioning

confidence: 87%

“…Although some authors report the toxicity of plant protection products used in seed treatment to the bacteria present in the inoculants (Araujo and Araújo, 2006;Hartley et al, 2012) Silva et al (2018) found a drastic reduction in the number of viable cells in seeds pre-inoculated 10 days before sowing and chemically treated with Fipronil+Thiophanate-methyl+Pyraclostrobin (Standack ® Top) and Metalaxyl-M+Fludioxonil (Maxim ® XL). Nevertheless, in the present study, the use of the cell protector ensured the survival of bacteria even with chemical treatments and these results are in accordance with Araújo et al (2017), who hypothesize that for establishing pre-inoculation technologies, especially in seeds treated chemically with crop protection products, the use of chemicals that improve bacterial survival is necessary.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Efficiency of pre-inoculation of soybeans with Bradyrhizobium up to 60 days before sowing

Machineski¹,

Scaramal²,

Matos³

et al. 2018

Afr. J. Agric. Res.

View full text Add to dashboard Cite

The inoculation of nitrogen-fixing bacteria in soybean crops allows the achievement of high crop yield by reducing or eliminating the application of nitrogen fertilizers. Pre-inoculation of seeds can reduce costs and increase the efficacy of this agricultural practice. The objective of this study was to assess the efficacy of pre-inoculation of soybean seeds with a commercial inoculant of Bradyrhizobium (RIZOLIQ LLI ® manufactured by Rizobacter do Brasil) at 60, 45, and 30 days before sowing using a cell protector and different chemical treatments. The study was conducted in four municipalities in the state of Paraná (Londrina, Pato Branco, Ponta Grossa, and Santa Tereza do Oeste) and included 14 treatments, a negative control, standard inoculation of the recommended bacterial strains on the day of sowing, and pre-inoculation at 30, 45, and 60 days before sowing using the commercial inoculant RIZOLIQ LLI ® together with the cell protector and chemical treatment of seeds with Imidacloprid (Rocks ® ), Fipronil+Thiophanate-methyl+Pyraclostrobin+ (Standack ® Top), Metalaxyl-M+Fludioxonil (Maxim ® XL), and Metalaxyl-M+Fludioxonil+Thiabendazole with Thiamethoxam (Maxim ® Advanced+Cruiser ® ). The nodulation, plant biomass, nitrogen concentration in shoot and grain, and grain yield were evaluated. The cell protector was efficient in maintaining the bacterial inoculant viable in the seed for up to 60 days. All treatments of pre-inoculation of soybean chemically-treated seeds up to 60 days before sowing could be performed without impairment of nodulation, plant biomass, nitrogen concentration in shoot and grain, and grain yield. Therefore, pre-inoculation of soybean seeds up to 60 days before sowing is an efficient and practical inoculation strategy for sowing soybean crops.

show abstract

Can NBPT urease inhibitor in combination with Azospirillum brasilense inoculation improve wheat development?

Galindo

Filho

Buzetti

et al. 2020

Nutr Cycl Agroecosyst

View full text Add to dashboard Cite

Agronomic efficiency of Bradyrhizobium pre-inoculation in association with chemical treatment of soybean seeds

Cited by 11 publications

References 13 publications

Seed pre‐inoculation with Bradyrhizobium as time‐optimizing option for large‐scale soybean cropping systems

Seed pre‐inoculation with Bradyrhizobium as time‐optimizing option for large‐scale soybean cropping systems

Efficiency of pre-inoculation of soybeans with Bradyrhizobium up to 60 days before sowing

Can NBPT urease inhibitor in combination with Azospirillum brasilense inoculation improve wheat development?

Contact Info

Product

Resources

About