Performance of white oat cultivars in response to nitrogen fertilization and trinexapac-ethyl

Bazzo, José Henrique Bizzarri; Riede, Carlos Roberto; Arruda, Klever Márcio Antunes; Cardoso, Carolina Pereira; Franzoni, Isabela; Fonseca, Inês Cristina de Batista; Zucareli, Claudemir

doi:10.5433/1679-0359.2019v40n5supl1p2121

Cited by 7 publications

(17 citation statements)

References 22 publications

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“…However, these doses of trinexapac have to be related to the productive behavior and lodging index of each cultivar. (Bazzo et al, 2019). However, in the second experiment, the hypothesis was confirmed with trinexapac doses applied at GS36, based on the following traits: plant height, lodging index and on thousand grain weight.…”

Section: Trinexapac Application To the 6th Visible Nodementioning

confidence: 77%

“…Application of trinexapac reduced the source-sink distance in wheat plants, which increased the translocation of photoassimilates to the components, and reduced plant height (Fioreze & Rodrigues, 2014). Bazzo et al (2019) found a greater number of panicles per m² in the association between growth regulator and nitrogen fertilization in an oat crop (Avena sativa). Trinexapac reduced plant height when applied in increasing doses on white oat plants at growth stages 31 (1st visible node-GS31) and 32 (2nd visible node-GS32) on the Zadoks scale (Zadoks et al, 1974), and associated with different amounts of topdressing nitrogen fertilization.…”

Section: Introductionmentioning

confidence: 91%

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Trinexapac-ethyl as an Alternative to Reduce Lodging and Preserve Grain Yield and Quality of Rye

Pinheiro¹,

Souza²,

Silva³

et al. 2020

JAS

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Trinexapac-ethyl (henceforth referred to as trinexapac) is a growth regulator that can mitigate some undesirable vegetative growth in Poaceae plants, reducing lodging and optimizing the distribution of photoassimilates to reproductive organs. The objective of this research was to evaluate the morphophysiological and productive responses of rye cultivars and trinexapac doses applied at different phenological stages of plants. Two field experiments were performed in two different seasons. In the 2015 growing season, 8 doses of trinexapac were evaluated: 0, 75, 85, 100, 115, 130, 150, 200 g ha-1 of active ingredient (a.i.), applied at the plant growth stage with the 4th node visible on the main stem (GS34). In the 2018 growing season, two cultivars (IPR 89 and BRS Serrano) and five doses of trinexapac were evaluated: 0, 50, 100, 150 and 200 g a.i. ha-1, applied at the plant growth stage with the 6th node visible on the main stem (GS36). The morphophysiological, productive and qualitative characteristics of grains were evaluated. In the 2015 season, trinexapac applied to shoot plants at GS34 only have low response in decreased plant lodging from around 20% to 10%. However, in the 2018 season, the application of trinexapac on plants at GS36, resulted in lower plant height, associated with reduced lodging and better quality of rye grains. Cultivar IPR 89 showed higher values for yield components and grain quality in comparison to cultivar BRS Serrano. Reduced lodging is dependent on speed of resumption of plant height growth, and the magnitude of response to trinexapac is also stage-cultivar-dose-dependent; in rye, the best response to trinexapac was found at GS 36 in comparison to GS 34, and for IPR 89 in comparison to BRS Serrano cultivar, respectively, with a dose range from 100 to 150 g ai ha-1. In conclusion, trinexapac (around 150 g a.i. ha-1), when applied to plants at GS36, reduces plant height, reduces the lodging index and enables the harvest of high-quality grains.

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Section: Trinexapac Application To the 6th Visible Nodementioning

confidence: 77%

Section: Introductionmentioning

confidence: 91%

Trinexapac-ethyl as an Alternative to Reduce Lodging and Preserve Grain Yield and Quality of Rye

Pinheiro¹,

Souza²,

Silva³

et al. 2020

JAS

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“…Similarly, for the E 3 time, there was a reduction of 10.11% from the dose of 100 g ha -1 . Bazzo et al (2019), studying doses of TE and N in white oat cultivars, in two growing environments (Mauá da Serra and Londrina-PR), observed that the cultivar IPR Artemis showed a reduction in TGW with the use of TE in the municipality of Maua da Serra. Martins et al (2021), in studies on the */**: significant at 5 and 1% probability by the F test, respectively; ns: not significant; CV: coefficient of variation; Variables: TGW: thousand grain mass; HW: hectoliter weight; GI>2mm: grain index greater than two millimeters; PI: peel index; IGY: industrial grain yield.…”

Section: Resultsmentioning

confidence: 99%

Doses and application times of trinexapac-ethyl on the industrial quality of white oat grains

Fernandes

Arruda

Couto

et al. 2023

Semina: Ciênc. Agrár.

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The application of trinexapac-ethyl in white oats, in addition to controlling lodging, can modify the architecture of the plant, which can favor good growth and development and the production of well-formed, large and heavy grains, characteristics that are valued by the food industry oat processing. However, the responses of the white oat genotypes regarding the effect of doses and times of application of the growth reducer can be variable. The objective of this work was to evaluate the effect of different doses and application times of the growth regulator trinexapac-ethyl on the industrial quality of white oat grains. The experiment was carried out with the cultivar IPR Artemis, under a randomized block design with four replications, in a 4 x 3 factorial scheme, corresponding to four doses of trinexapac-ethyl (0, 50, 100 and 150 g ha-1) and three application times (E1: plants with the 1st noticeable node; E2: between the 1st visible node and the 2nd noticeable node and E3: plants with the 2nd visible node and 3rd noticeable node). The weight of one thousand grains, hectoliter weight, percentage of grains with thickness greater than two millimeters, husking index and industrial grain yield were evaluated. The application of trinexapac-ethyl regardless of the stages at doses of 0 and 50 g ha-1 does not interfere with the industrial quality of grains, but at doses of 100 and 150 g ha-1, at times E2 and E3, there is a reduction in industrial quality of grains (weight of a thousand grains, hectoliter weight, percentage of grains thicker than two millimeters, hulling and industrial grain yield) of the cultivar IPR Artemis.

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“…A resposta do trigo à adubação nitrogenada varia em virtude do genótipo (BAZZO et al, 2019) e das condições de cultivo (SANGOI et al, 2007). Costa et al (2013), também constataram respostas diferentes à adubação nitrogenada parcelada de diversas formas, em virtude do genótipo.…”

Section: Resultsunclassified

Parcelamento de doses da adubação nitrogenada na produtividade e qualidade fisiológica de sementes de trigo

et al. 2020

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The application of nitrogen (N) in the correct dose and at the right time can favor the productivity and quality of wheat seeds. In this sense, the aim was to evaluate the effect of splitting and doses of nitrogen fertilization on the productivity and physiological quality of seeds of wheat cultivars. The seeds were produced at the National Soybean Research Center, in Londrina-PR, in a randomized block experimental design in a 2 × 7 factorial scheme, with four replications. The factors were constituted by two cultivars (BRS Gralha-azul and BRS Sabiá) and seven combinations of doses and splitting of nitrogen fertilization (0 kg ha-1, 40 kg ha-1at tillering, 80 kg ha-1at tillering, 40 kg ha-1at sowing, 80 kg ha-1at sowing, 40 kg ha-1at sowing + 40 kg ha-1at tillering, 20 kg ha-1at sowing + 60 kg ha-1at tillering). The following were evaluated: productivity, germination, first germination count, length and dry mass of seedlings, emergence of seedlings in sand and emergence speed index. The data were subjected to analysis of variance with comparison of means by the F test, between genotypes, and Scott-Knott, between N combinations. The effect of nitrogen fertilization on seed productivity varies with the cultivar. The application of 80 kg ha-1N at sowing favors the vigorof the seeds for BRS Gralha-azul, and the application of 40 kg ha-1N at sowing, or 80 kg ha-1N at tillering favors the production of quality seeds for BRS Sabiá. The inadequate supply of N impairs the physiological quality of seeds produced.

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Performance of white oat cultivars in response to nitrogen fertilization and trinexapac-ethyl

Cited by 7 publications

References 22 publications

Trinexapac-ethyl as an Alternative to Reduce Lodging and Preserve Grain Yield and Quality of Rye

Trinexapac-ethyl as an Alternative to Reduce Lodging and Preserve Grain Yield and Quality of Rye

Doses and application times of trinexapac-ethyl on the industrial quality of white oat grains

Parcelamento de doses da adubação nitrogenada na produtividade e qualidade fisiológica de sementes de trigo

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