Pre-Inoculation with &amp;lt;i&amp;gt;Bradyrhizobium&amp;lt;/i&amp;gt; spp. in Industrially Treated Soybean Seeds

Anghinoni, Fernanda Brunetta Godinho; Braccini, Alessandro Lucca; Scapim, Carlos Alberto; Anghinoni, Guilherme; Ferri, Gláucia Cristina; Suzukawa, Andréia Kazumi; Tonin, Telmo Antônio

doi:10.4236/as.2017.87044

Cited by 7 publications

(8 citation statements)

References 13 publications

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“…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%

“…Pre-inoculation of soybean seeds before sowing may stimulate the use of inoculants in these crops and optimize sowing. Some studies have shown the efficacy of seed pre-inoculation on bacterial survival (Gemell et al, 2005) and crop yield (Zilli et al, 2010;Anghinoni et al, 2017) even with a cell protector (Marks et al, 2013). However, to date, few inoculation technologies used before sowing ensured bacterial survival on seeds treated chemically with crop protection products under long storage periods and ensured good agronomic performance in the field.…”

Section: Discussionmentioning

confidence: 99%

“…Pre-inoculation or early inoculation of Bradyrhizobium strains recommended for soybeans might be the solution as long as the bacterial cells are viable on the day of sowing and the chemical treatment of the seeds does not reduce the viability of the inoculant. Therefore, preinoculation allows amplifying the effects of BNF in soybeans by the increased inoculation of soybeans with Bradyrhizobium by farmers because the seeds could be commercialized in the pre-inoculated homogenized form and seed quality is guaranteed (Anghinoni et al, 2017;Araújo et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

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

Machineski¹,

Scaramal²,

Matos³

et al. 2018

Afr. J. Agric. Res.

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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.

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Section: Discussionmentioning

confidence: 71%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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

Machineski¹,

Scaramal²,

Matos³

et al. 2018

Afr. J. Agric. Res.

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“…Inoculation of nitrogen-fixing bacteria of the Bradyrhizobium genus is a very important component of soybean production systems (Hungria et al, 2006;Salvagiotti et al, 2008); therefore, it needs to be considered by the companies that offer industrial seed treatment to the growers. Inoculation been performed traditionally at the day of sowing; however, due to the reduction of efficiency of the sowing process; preinoculation has been assessed as an alternative to the conventional inoculation (Zilli et al, 2010;Silva Junior et al, 2016;Anghinoni et al, 2017). Pre-inoculation is a practice that consists of inoculating soybean seeds days or even weeks before sowing (Anghinoni et al, 2017); therefore, growers do not need to worry about rushing and inoculating the seeds at the day of sowing.…”

mentioning

confidence: 99%

“…Inoculation been performed traditionally at the day of sowing; however, due to the reduction of efficiency of the sowing process; preinoculation has been assessed as an alternative to the conventional inoculation (Zilli et al, 2010;Silva Junior et al, 2016;Anghinoni et al, 2017). Pre-inoculation is a practice that consists of inoculating soybean seeds days or even weeks before sowing (Anghinoni et al, 2017); therefore, growers do not need to worry about rushing and inoculating the seeds at the day of sowing.…”

mentioning

confidence: 99%

Seed treatment and pre-inoculation of soybean: effect of storage period and agrochemicals on the physiological quality of seed and yield

Sandini¹,

Belani²,

Falbo³

et al. 2019

Afr. J. Agric. Res.

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Industrial seed treatment of soybean [Glycine max (L.) Merr.] has increased over the last years. New technologies have been developed to allow the inoculation procedure, which is traditionally done at the day of sowing, to be performed with the industrial treatment days or even weeks before sowing. Since little is known about the compatibility of agrochemicals and pre-inoculation, the objective of this study was to determine whether the storage period and the combination of fungicides and insecticides could negatively affect the physiological quality and yield of soybean seeds that were pre-inoculated. Soybean seeds received fourteen seed treatments that consisted of different fungicides and insecticides and were pre-inoculated with Bradyrhizobium elkanii. The seeds were treated and stored for 51 days until it was sown in the field. Every 17 days the physiological quality of the seed was assessed. The results shown that pre-inoculation did not affect the physiological quality of seeds. However, some combinations of agrochemicals, as well as storage period reduced seed vigor and seed germination, while increased abnormal seedlings. The findings of this study indicated that some combinations of fungicides and insecticides can have adverse effect on the physiological quality of seed that is stored for up to 51 days before sowing, but none of them jeopardized the nodulation and soybean yield under field conditions.

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

et al. 2020

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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.

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Pre-Inoculation with <i>Bradyrhizobium</i> spp. in Industrially Treated Soybean Seeds

Cited by 7 publications

References 13 publications

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

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

Seed treatment and pre-inoculation of soybean: effect of storage period and agrochemicals on the physiological quality of seed and yield

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

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