Trinexapac-ethyl e adubação nitrogenada na cultura do trigo

Pagliosa, E.E.; Benin, Giovani; Biezus, Elda; Beche, Eduardo; Silva, C.L.; Marchese, José Abramo; Martin, Thomas Newton

doi:10.1590/s0100-83582013000300014

Cited by 16 publications

(18 citation statements)

References 13 publications

(13 reference statements)

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“…This behavior can be attributed to genetic effect. In this context, Pagliosa et al (2013) indicate differences in the genetic potential between wheat BRS 208 and BRS Guamirim, wherein the first cultivar was influenced by the dose of trinexapac-ethyl, behavior not observed in the latter cultivar for the character grain number per ear.…”

Section: Resultsmentioning

confidence: 82%

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Effects of growth reducer and nitrogen fertilization on morphological variables, SPAD index, interception of radiation and productivity of wheat

et al. 2015

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The objective of this study was to evaluate the effect of growth reducer and nitrogen fertilization on morphological variables, SPAD index, radiation interception, and grain yield of three cultivars of wheat. The experimental design was a randomized block in factorial scheme 3x5x2, with three cultivars (Mestre, Iguaçú and Itaipú), five nitrogen doses (0, 40, 80, 120, 160 Kg ha -1 ), and application or no application of a growth reducer, with three replications. The following characteristics were evaluated: plant height, SPAD index, leaf area index (LAI), Global Radiation Interception (GRI) and grain yield. The Tukey test (p < 0.05) was used for the comparison between the means of cultivar and growth reducer factors, and for a regression analysis to evaluate N levels. Increasing the dose of nitrogen promotes an increase in LAI of plants of wheat crops differently among cultivars, which leads to a greater degree of global radiation interception. At doses higher or equal to 120 Kg ha -1 of nitrogen, there are significant differences in grain yield between treatments with and without the application of the growth reducer. The significant interaction between growth reducer and nitrogen dose, showed that applications of growth reducer increase the GRI at doses above and below 80 Kg ha -1 of nitrogen. Nitrogen rates of 138 and 109 Kg ha -1 are responsible for maximum grain yields of wheat, which is 4235 and 3787 Kg ha -1 with and without the use of growth reducer, respectively.

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Section: Resultsmentioning

confidence: 82%

“…Pagliosa et al (2013), working with wheat cultivars BRS 208, BRS 220 and BRS Guamirim, using nitrogen fertilizer in the form of urea, did not identify the occurrence of lodging.…”

Section: Resultsmentioning

confidence: 89%

Effects of growth reducer and nitrogen fertilization on morphological variables, SPAD index, interception of radiation and productivity of wheat

et al. 2015

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“…Therefore, in the elaboration of the presented models were considered the cumulative effects of variability among the years. In the estimation of the ideal growth regulator dose by lodging expression (Table 2), the regression equations tested showed a x − -50.67 − 0.092x 89 * (5) ≅ 495 * = Significant at 5% probability of error, respectively, by the probability of F; ( ) In wheat [27] [28] and rice [9]- [29] was observed a reduction of plant lodging with the 400 mL•ha −1 dose of regulator. In crotalaria [30] and soybean [31], efficient reduction of lodging was obtained with the application of 500 mL•ha −1…”

Section: Resultsmentioning

confidence: 99%

A Proposal of Oat Productivity Simulation by Meteorological Elements, Growth Regulator and Nitrogen

Marolli¹,

Silva²,

Scremin³

et al. 2017

AJPS

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The simulation of oat grain productivity does not contemplate the use of efficient models that involve important management with meteorological elements. The objective of the study is to propose a mathematical model capable of simulating the oat grain productivity through the management of nitrogen and growth regulator with variables related to the plant and to meteorological elements. In this study, two experiments were conducted in the years of 2013, 2014 and 2015: one to quantify biomass productivity and another to determine grain productivity and lodging at the management doses of nitrogen and growth regulator. The experimental design was a randomized block with four replications in a 4 × 3 factorial scheme for 0, 200, 400 and 600 mL•ha −1 growth regulator doses and 30, 90 and 150 kg•ha −1 nitrogen doses, respectively. During the crop cycles, the meteorological variables thermal sum, radiation and rainfall were quantified. The mathematical model proposed, which combines polynomial regression of the harvest index with multiple linear regression of the biological productivity, is efficient in the simulation of oat grains productivity with the use of growth regulator, nitrogen and meteorological elements. Thus, it adds to the conventional models of simulation and becomes an aid tool for making decisions regarding the management of oats culture.

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“…A utilização de altas doses de adubação nitrogenada tem se tornado uma prática rotineirana busca da maximização da produção, aumento da qualidade do grão e melhoria da eficiência produtiva da espécie (PENCKOWSKI et al, 2009;PAGLIOSA et al, 2013). No entanto, a aplicação de elevadas doses de nitrogênio podeacarretar o acamamento das plantas, prejudicando sua produtividade, qualidade e dificultando a colheita mecanizada de grãos (ZAGONEL e FERNANDES, 2007).…”

Section: Introductionunclassified

Efeito do trinexapac-etil associado a adubação nitrogenada elevada e parcelada na produtividade do trigo cultivar BRS-220

Marchese

Suchoronczek

Civieiro³

et al. 2016

Revista Brasileira De Tecnologia Aplicada Nas Ciências Agrárias

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ResumoO uso de altas doses de adubação nitrogenada, associado à aplicação de redutores de crescimento, pode ser uma alternativa para que plantas de trigo consigam expressar potencial produtivo elevado sem a ocorrência de acamamento. Por este motivo, o objetivo deste trabalho foi avaliar o efeito do redutor de crescimento trinexapac-etil associado à adubação nitrogenada elevada e parcelada no rendimento e seus componentes em plantas de trigo da cultivar BRS 220. O delineamento experimental foi de blocos ao acaso com dois tratamentos e quatro repetições, compostos da aplicação de 110 kg de N ha -1 associados ou não a 0,4 g L -1 de trinexapac-etil. Foram avaliados rendimento e seus componentes, diâmetro de colmo, comprimento de entrenó, altura de planta e comprimento do colmo. As médias foram submetidas ao teste-t de Student no programa Systat 13 ® . A aplicação do redutor de crescimento contribuiu com um aumento significativo no rendimento e no diâmetro do colmo das plantas, além da redução da altura, comprimento do colmo e do entrenó, quando comparado com o tratamento sem a aplicação do produto.Palavras chave:Nitrogênio, redutor de crescimento, Triticum aestivum. Trinexapac-ethyl effect associated with high and split fertilization on wheat productivity cultivar BRS 220 AbstractThe use of high nitrogen doses, associated with the application of growth reducers, can be an alternative to wheat plants express high productive potential without the occurrence of lodging. For this reason, the aim of this study was to evaluate the effect of trinexapac-ethyl growth reducer associated with high and split nitrogen fertilization on yield and its components in wheat cultivar BRS 220. The experimental design was randomized blocks with two treatment and four replications, compose with the application of 110 kg N ha -1 with or without 0,4 g L -1 of trinexapac-ethyl. It was evaluated yield and its components, stem diameter, length of internode, plant height and stem length and the averages were submitted to Student t-test using Systat 13 ® . The application of the growth retardant contributed to a significant increase in yield and stem diameter of the plants, besides the reduction of height and length of stem and internode, when compared to the treatment without product application.

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Trinexapac-ethyl e adubação nitrogenada na cultura do trigo

Cited by 16 publications

References 13 publications

Effects of growth reducer and nitrogen fertilization on morphological variables, SPAD index, interception of radiation and productivity of wheat

Effects of growth reducer and nitrogen fertilization on morphological variables, SPAD index, interception of radiation and productivity of wheat

A Proposal of Oat Productivity Simulation by Meteorological Elements, Growth Regulator and Nitrogen

Efeito do trinexapac-etil associado a adubação nitrogenada elevada e parcelada na produtividade do trigo cultivar BRS-220

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