Nodulation and mycorrhization of transgenic soybean after glyphosate application

Chagas, Aloísio Freitas; Reis, Marcelo Rodrigues dos; Santos, Gil Rodrigues dos; Erasmo, Eduardo Andrea Lemus; Chagas, Líllian França Borges

doi:10.5433/1679-0359.2013v34n6suppl1p3675

Cited by 1 publication

(2 citation statements)

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“…However, in GM soybean cultivars, BNF can be recovered after some time (King et al, 2001). Chagas Junior et al (2013) observed that the application of two glyphosate formulations reduced the number of nodules of GM soybean at 45 days after application, but at 60 days after application, no difference was observed.…”

Section: Resultsmentioning

confidence: 99%

“…In the GM soybean cultivation, besides weed burneddown application in pre-sowing, it is common to have two glyphosate applications in post-emergence, due to weed escape. However, more glyphosate applications during the crop cycle intensify the negative effects on soybean nodulation (Chagas Junior et al, 2013). Therefore, these applications must be carefully done not to affect BNF.…”

Section: Introductionmentioning

confidence: 99%

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GM soybean nodulation and yield in response to glyphosate applications and co-inoculation

Ferreira,

Burg,

Arismendi

et al. 2022

Agraria

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Glyphosate is the main herbicide applied post-emergence to GM soybean. Previous research showed that glyphosate can affect the number and mass of nodules that affect yield. However, with the use of techniques to increase nodulation, the effect of glyphosate on the yield of GM soy may be lessened. The objective was to evaluate GM soybean nodulation and yield as a function of glyphosate applications and co-inoculation. Four experiments were carried out in one area with a history of co-inoculation. The treatments of glyphosate included: weed burned-down 10 days prior to sowing plus one post-emergence application, weed burned-down 10 days prior to sowing plus two post-emergence applications, one post-emergence application, two post-emergence applications and weed control carried out mechanically with a hoe. The treatments of inoculation involved three types: co-inoculation, inoculation and no inoculation. Glyphosate applications reduced nodulation in only one of the four experiments. Co-inoculation increased nodule number and dry weight by 105 and 168%, respectively, in one experiment of the 2018/19 crop year compared to no inoculation. In this study, glyphosate applications altered nodulation but did not influence grain yield.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%