Seletividade de glyphosate isolado ou em misturas para soja RR em aplicações sequenciais

Alonso, Diego Gonçalves; Constantin, Jamil; Jr, R.S Oliveira; Santos, Geraldo Tadeu dos; Dan, Hugo Almeida; Neto, Antônio Mendes Oliveira

doi:10.1590/s0100-83582013000100022

Cited by 9 publications

(6 citation statements)

References 15 publications

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“…Melhorança Filho et al (2010) used different doses of glyphosate in the V4 stage and at 7 days after the application of 2400 g ha -1 , they obtained 13% intoxication to soybean 'CD-212RR', partially corroborating the results obtained in the present study. Alonso et al (2013) found intoxication rates by glyphosate in soybean close to 30% at 7 DATs in the development stages V1 to V2 and V3 to V4, in the doses of 720, 960, 1,200 and 1,440 g ha -1 .…”

Section: Resultsmentioning

confidence: 81%

‘BMX Ativa’ soybean responses after application of biofertilizer associated or not with glyphosate

Galon

Babinski

Forte

et al. 2021

Agraria

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Even with the development of glyphosate-resistant soybean, there are cases in which harmful effects of intoxication occur, especially when the herbicide is applied in mixture with other products. The objective of this work was to verify the efficiency of biofertilizer as a glyphosate stress reducer in the soybean "BMX Ativa". The experiment was installed in a randomized block design, in a 3 × 5 + 1 factorial scheme, with four replications. In factor A, soybean development stages (V4, V8 and V4 + V8) were allocated, and in factor B the application of 0.1 L ha-1 of biofertilizer, 1,080 and 2,160 g ha-1 of a.e. of glyphosate, applied in isolated mode and/or mix in tank, plus one control without application as an additional treatment. The evaluated variables were phytointoxication, number of grains per plant, number of pods per plant, thousand grains mass and soybean grain yield. The application of double the dose of glyphosate (2,160 g ha-1) alone or in mixture with the biofertilizer in stages V4, V8 and V4 + V8 caused visual injuries to soybean 'BMX Ativa' until 28 days after application, but without affect the productive characteristics of the crop. The biofertilizer did not affect soybean plants and neither mitigate the negative effect of the highest dose of glyphosate.

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Section: Resultsmentioning

confidence: 81%

‘BMX Ativa’ soybean responses after application of biofertilizer associated or not with glyphosate

Galon

Babinski

Forte

et al. 2021

Agraria

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“…2), all treatments containing either lactofen or chlorimuron consistently affected plant height after second application (Table 4). Previous selectivity works with herbicide mixtures containing glyphosate have also reported that lactofen may cause more severe soybean injuries as compared to other herbicides (Almeida Jr. et al, 2010;Alonso et al, 2013). Addition of FP to GLY+LAC prevented the slower growth observed after one single application of herbicides (Table 2), but it was not effective for sequential applications of GLY/GLY+LAC and GLY/GLY+CHL (Table 4).…”

Section: Resultsmentioning

confidence: 89%

“…However, there was no prevention of yield loss due to the application of GLY+LAC and GLY+CHL in combination with FP in both experiments. The difference between both situations could be the type of injuries caused by the herbicide treatments, more transitory for GLY alone but more long-lasting for the necrotic lesions on leaves caused by GLY+LAC and GLY+CHL (Alonso et al, 2013).…”

Section: Resultsmentioning

confidence: 99%

Prevention of yield losses caused by glyphosate in soybeans with biostimulant

Constantin¹,

Jr²,

Gheno³

et al. 2016

Afr. J. Agric. Res.

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Enhanced selectivity can be achieved for some herbicide treatments through the application of chemicals that reduce or protect plants from injuries. The objective of this work was to evaluate the potential to prevent herbicide yield losses in glyphosate-resistant soybean by the use of the biostimulant Fertiactyl PÓS. Based on results from two field experiments, the association of Fertiactyl PÓS with glyphosate applied post emergence of soybeans reduced foliar injuries and prevented yield losses caused by the herbicide, either when glyphosate was applied in one single application or when it was applied in two sequential applications. However, the application of the Fertiactyl PÓS was not enough to assuage the injuries caused by the mixtures of glyphosate+lactofen and glyphosate+chlorimuron-ethyl.

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“…For imazethapyr and lactofen, a reduction in yield was found in comparison with the control, even when these products were used in a single application in the soybean cycle. Possibly, this factor may be related to a greater sensitivity of the cultivar used in the experiment to these herbicides, since in the literature the selectivity of these herbicides for soybean crops has already been attested (Alonso et al 2011;Alonso et al 2013). The use of Grainset ® , in a single application, did not show differences in grain yield when compared to the control.…”

Section: Resultsmentioning

confidence: 96%

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Gonçalo¹,

Andrade²,

Cruvinel³

et al. 2021

J. Res. Weed Sci.

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The search for cultivation practices that provide increased soybean yield has been recurrent. From this context, the objective of this study was to evaluate the agronomic performance of soybeans with the application of phytosanitary products, as well as the effect of 2,4-D amine subdoses on this crop. Two field experiments were conducted in a randomized block design (RCBD), in a factorial arrangement, with four replications. In the first experiment, one factor corresponded to the soybean post-emergence application of propiconazole, 2,4-D amine, lactofen, imazethapyr and Grainset ® , while the other factor corresponded to the single or sequential application of these products. For the second experiment, one factor corresponded to the application of 2,4-D amine at two phenological stages of soybeans: V4 or V8 (4 and 8 fully expanded trifoliate leaves, respectively), while in the other factor the subdoses of this herbicide were evaluated: 4.03, 8.06, 12.09, 16.12, 20, 15 and 24.18 g a.i. ha -1 . In both experiments, the additional treatment consisted of the control without application. 2,4-D amine applied in subdoses has potential for use in soybeans. The application of 2,4-D amine subdoses promotes changes in morphological parameters of this crop. Increase in the yield of this crop can be obtained with the application of 2,4-D amine in subdoses varying between 16.12 and 20.15 g a.i. ha -1 .

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Seletividade de glyphosate isolado ou em misturas para soja RR em aplicações sequenciais

Cited by 9 publications

References 15 publications

‘BMX Ativa’ soybean responses after application of biofertilizer associated or not with glyphosate

‘BMX Ativa’ soybean responses after application of biofertilizer associated or not with glyphosate

Prevention of yield losses caused by glyphosate in soybeans with biostimulant

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