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

Machineski, Gabriela Silva; Scaramal, Andrea Silva; Matos, Maria Aparecida de; Machineski, Oswaldo; Filho, Arnaldo Colozzi

doi:10.5897/ajar2018.13108

Cited by 6 publications

(2 citation statements)

References 11 publications

(16 reference statements)

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“…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

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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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Section: Introductionmentioning

confidence: 99%

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

et al. 2020

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“…use of pre-inoculation with Bradyrhizobium spp. (Anghinoni et al, 2017;Machineski et al, 2018). All these results are contrary to what was found by Brzezinski et al (2015) and Zilli et al (2009), where the authors mentioned that treatment of soybean seeds with insecticide and fungicides before sowing hinders the establishment of soybean in the field and reduces nodulation of the plants.…”

Section: Nodulation and Soybean Yieldmentioning

confidence: 64%

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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Impact of pesticides in properties of Bradyrhizobium spp. and in the symbiotic performance with soybean

Rodrigues

Bender

Sanzovo

et al. 2020

World J Microbiol Biotechnol

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

Cited by 6 publications

References 11 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

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

Impact of pesticides in properties of Bradyrhizobium spp. and in the symbiotic performance with soybean

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