Avaliação da disponibilidade de nitrogênio no solo para o trigo em Latossolo Vermelho do Distrito Federal

Meneghin, Maria Fernanda Scian; Ramos, Maria Lucrécia Gerosa; Oliveira, Sebastião Alberto de; Ribeiro, Walter Quadros; Amábile, R. F.

doi:10.1590/s0100-06832008000500015

Cited by 11 publications

(12 citation statements)

References 17 publications

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“…O nitrogênio se caracteriza como um dos principais fatores limitantes ao crescimento e desenvolvimento das plantas (Meneghin et al, 2008) participando na constituição de substâncias determinantes da qualidade e no desenvolvimento de funções metabólicas essenciais, tais como a síntese proteica (Pöttker & Roman, 1998).…”

Section: Introductionunclassified

Desenvolvimento inicial de trigo sob doses de nitrogênio em Latossolo Vermelho de Cerrado

Pietro-Souza

Bonfim-Silva

Schlichting

et al. 2013

Rev. bras. eng. agríc. ambient.

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RESUMOAs condições de solo, clima, topografia e variedades adaptadas, têm favorecido o cultivo de trigo no Cerrado; contudo, no que concerne à adubação nitrogenada, ela é responsável pelo incremento de produção. Assim, o objetivo deste estudo foi avaliar o desenvolvimento inicial e a produção de massa seca de plantas de trigo cv. Guamirim adubado com nitrogênio em Latossolo Vermelho do Cerrado. O experimento foi conduzido em casa de vegetação da Universidade Federal do Mato Grosso -Campus Universitário de Rondonópolis, em vasos com capacidade para 5 dm 3 . O delineamento experimental foi o inteiramente casualizado com seis doses de nitrogênio (0, 80, 160, 240, 320 e 400 mg dm -3 ), cinco repetições e cinco plantas por vaso. Os períodos de avaliações foram: 26, 33, 40 e 47 dias após a emergência, determinou-se: número de folhas e perfilhos, altura de planta, massa seca da parte aérea e raízes. A adubação nitrogenada influencia o desenvolvimento das plantas de trigo em todos os períodos avaliados. As melhores respostas do trigo à adubação nitrogenada ocorrem nas doses entre 80 a 195,6 mg dm -3 . Palavras-chave: Triticum aestivum L., crescimento, ureiaInitial development of wheat under different nitrogen levels in an Oxisol of the 'Cerrado' ABSTRACT The soil conditions, climate, topography and adapted varieties have favored the cultivation of wheat in the 'Cerrado'. However, regarding the nitrogen fertilization, it is considered the main factor for increasing production. The objective of this study was to evaluate the initial development and dry mass production of wheat plants cv. Guamirim fertilized with nitrogen in the 'Cerrado' Oxisol. The experiment was carried out in a greenhouse at the University of Mato Grosso -Campus of Rondonópolis, in recipients of 5 dm 3 . The experimental design was completely randomized with six levels of nitrogen (0, 80, 160, 240, 320 and 400 mg dm -3 ), five replications with five plants per pot. The evaluation periods were: 26, 33, 40 and 47 days after emergence, where the number of leaves and tillers, plant height, dry mass of shoots and roots were determined. Nitrogen fertilization affected the wheat plant development for all evaluated periods. The best responses of wheat to nitrogen fertilization occurred at doses ranging from 80 to 195.6 mg dm -3 .

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Section: Introductionunclassified

Desenvolvimento inicial de trigo sob doses de nitrogênio em Latossolo Vermelho de Cerrado

Pietro-Souza

Bonfim-Silva

Schlichting

et al. 2013

Rev. bras. eng. agríc. ambient.

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“…Em relação a taxa de Nitrogênio (N) presente no solo a quantidade de acordo com a Mata Nativa foi de 0,26. De acordo com Meneghin et al (2008), o nitrogênio é um importante elemento pois é um dos principais fatores limitantes para o desenvolvimento da vegetação já que tem relação direta com a fotossíntese, sendo constituinte da clorofila, vitaminas, carboidratos e proteínas, além de sua atuação no sistema radicular. Mais uma vez um valor mais alto entre os pastos foi para o PR1 (0,18) e um decréscimo no PR2 (0,16).…”

Section: Resultsunclassified

Alterações Nos Atributos Químicos De Um Argissolo Amarelo, Submetido a Três Diferentes Agroecossistemas

Blanco¹,

Campos²,

Santos³

et al. 2018

Enci Bio

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Historically, Brazil is a country in which agricultural production presents one of its greatest economic characteristics, however, in the last decades, public policies have been constructed that aim at a greater insertion of family agriculture. This practice, if not done with good management, can become extremely harmful to the physical, biological and chemical properties of the soil. Thus, the use of environmental parameters for soil establishes the level of environmental degradation in which they are, directing preventive, corrective and control actions. The objective of this study was to analyze the changes in the chemical attributes of a yellow argisol, located in the vicinity of Eldorado dos Carajás-Pará, under different agroecosystems: pastures with 1 and 2 years of reforestation and primary forest. Data collection was performed from the second half of 2017, during the months of November and December. In view of the result found, according to the methodology used, in many cases the chemical attributes evaluated were satisfactory over time when compared to the native forest, such as salinization and potential acidity (harmful to the soil), where the lowest value obtained went to the pasture with 2 years of reform. In addition, the value found individually in each of the parameters allowed to evaluate the chemical property to which more attention should be directed, functioning as an instrument of evaluation and control of the environmental degradation in which the soils are found.

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“…Because of its importance to seeds yield, the nitrogen, if mismanaged, can bring unsatisfactory effects in yield and quality of grains and seeds (Meneghin et al, 2008). The amount of nitrogen that must be applied in the barley culture, at the Southern Brazil, is based in the organic matter content, harvesting expectation and culture history (SBCS, 2016).…”

Section: Introductionmentioning

confidence: 99%

Physiologic Quality and Biochemical Characters of Barley Seeds Produced Under Nitrogen Doses and Growing Environments

Jaques¹,

Carvalho²,

Szareski³

et al. 2019

JAS

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Barley (Hordeum vulgare L.) is considered one of the most important cereals, such as maize, rice and wheat, due to its multiplicity of usage, as much for human consumption as for feed. The Nitrogen is one of the main nutrients that influences the quality and productivity of barley seeds because it participates in numerous metabolic routes. It is a limiting factor of the production, the lack or the excess can bring consequence to the culture. In this manner, the present study aims to evaluate the influence of different nitrogen doses on the physiologic quality and biochemical characters of brewing barley seeds produced in two growing environments. The experiment was conducted in the 2017 crop season, in a randomized block design, organized in a factorial scheme, being 2 cultivation environment × 2 brewing barley cultivars × 4 nitrogen doses, disposed in four replicates. The physiological quality of the seeds was evaluated by germination, first counting of germination, accelerated aging, field emergence, shoot and root length, dry mass of shoot and root of seedlings, electrical conductivity (3, 6 and 24 hours) and isoenzymes. The growing environment promotes differences in the barley seeds physiologic quality. The nitrogen fertilizing, at dose of 120 kg ha-1, results in superiority in the physiologic quality of seeds. The cultivar BRS Cauê in both environments presented higher vigor. The nitrogen fertilizing alters the isoenzymatic expression of barley seedlings, creating variation in the bands intensity, at different nitrogen doses.

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Avaliação da disponibilidade de nitrogênio no solo para o trigo em Latossolo Vermelho do Distrito Federal

Cited by 11 publications

References 17 publications

Desenvolvimento inicial de trigo sob doses de nitrogênio em Latossolo Vermelho de Cerrado

Desenvolvimento inicial de trigo sob doses de nitrogênio em Latossolo Vermelho de Cerrado

Alterações Nos Atributos Químicos De Um Argissolo Amarelo, Submetido a Três Diferentes Agroecossistemas

Physiologic Quality and Biochemical Characters of Barley Seeds Produced Under Nitrogen Doses and Growing Environments

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