Produtos à base de triazol como redutores de crescimento da cultura da soja

Pacentchuk, Fabiano; Sandini, Itacir Elói; Rodrigues, João Domingos; Ono, Elizabeth Orika

doi:10.19084/rca16064

Cited by 3 publications

(4 citation statements)

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“…Similar results have already been reported in the literature for fungicides from the chemical group of triazoles (e.g. propiconazole), as well as for the herbicide lactofen with regard to the effect of these products on the architecture of soybean plants (Rios, 2016;Pacentchuk et al 2018). The shortening of the distance between the reproductive nodes of soybean is related to the physiological stress that these products provide to plants, also causing a reduction in size.…”

Section: Resultssupporting

confidence: 83%

“…For propiconazole, reductions in yield compared to the control without application were only observed when this fungicide was used sequentially. It is inferred that this reduction in yield provided by propiconazole in sequential applications may be motivated by the fact that triazoles have a cumulative effect when sprayed on soybean plants, causing inhibition in the synthesis of gibberellin, which may negatively impact the yield of this crop (Pacentchuk et al 2018). 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.…”

Section: Resultsmentioning

confidence: 99%

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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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Section: Resultssupporting

confidence: 83%

Section: Resultsmentioning

confidence: 99%

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Gonçalo¹,

Andrade²,

Cruvinel³

et al. 2021

J. Res. Weed Sci.

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“…Seedlings that present the shoot very developed in comparison with the root system are considered fragile and may present a high mortality rate in the field. Some growth inhibitors, such as paclobutrazol (PBZ), act inhibiting gibberellin production, a hormone responsible for vegetative growth and used to avoid etiolation, lodging, or even the competition between plants (Brito et al, 2016;Pacentchuk et al, 2018). These substances can be used directly in the soil/substrate in the treatment of seeds or sprayed on the leaf surface (Benett et al, 2014;Parladore et al, 2019;Ascoli et al, 2020;Matos et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Priming and Growth Inhibitor in the Production of High-Quality Pepper Seedlings

Silva

Binotti

Matos

et al. 2021

Rev. Agric. Neotrop.

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This study aimed to evaluate the effect of nitrate salts and a growth regulator on seed conditioning. Subsequently, the responses of the influence of the leaf application of paclobutrazol (PBZ) and nitrogen on the quality of seedlings of Capsicum frutescens L. were evaluated. Two experiments were carried out. The first experiment was conducted in a completely randomized design to evaluate priming, as follows: T1 – control, T2 – control (water), T3 – 0.2% calcium nitrate, T4 – 0.2% potassium nitrate, T5 – 0.1% calcium nitrate + 0.1% potassium nitrate, T6 – PBZ, and T7 – PBZ + 0.1% calcium nitrate + 0.1% potassium nitrate. The second experiment was carried out in a completely randomized design in a 2×5 factorial scheme consisting of priming (absence and presence of calcium nitrate) and leaf application of growth regulator, as follows: control (water), PBZ, PBZ + 1% nitrogen (calcium nitrate), PBZ + 1% nitrogen (urea), and PBZ + nitrogen (0.5% calcium nitrate + 0.5% urea). Physiological conditioning with a solution of 0.1% calcium nitrate increased the germination and seedling emergence rate and resulted in seedlings with a higher shoot length at 33 days after sowing (DAS), but seedlings at 50 DAS showed no differences in growth with its use. Leaf application of 0.1% paclobutrazol provided pepper (C. frutescens L.) seedlings with better distribution in growth according to the Dickson quality index.

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“…Flutriafol less effectiveness for malformation could be probably caused by its effect in gibberellin level reduction in plant tissue, as demonstrated in soybean (PACENTCHUK et al, 2018), because one reason for malformation symptom development is the reduction in gibberellin levels, as demonstrated by a study where the levels in infected buds were fewer than in healthy buds (USHA et al, 2019).…”

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confidence: 99%

Chemical control of dieback and mango malformation in a semiarid region

2022

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The São Francisco Sub medium Valley is a great mango exporter in Brazil. In this semiarid region, diseases such as dieback and mango malformation have reduced the production of this crop. In this work the effectiveness of different active ingredients (flutriafol, methyl-thiophanate, copper hydroxide and fluxapyroxad mixed with pyraclostrobin) was assessed for the control of these diseases in a mango orchard. Monthly assessments of disease incidence were carried out. There was a difference among treatments for the two diseases studied, with flutriafol as the most effective fungicide against dieback and, for the malformation, the mixture of fluxapyroxad and pyraclostrobin and methyl-thiophanate showed the best results.

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Produtos à base de triazol como redutores de crescimento da cultura da soja

Cited by 3 publications

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Priming and Growth Inhibitor in the Production of High-Quality Pepper Seedlings

Chemical control of dieback and mango malformation in a semiarid region

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