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

Pietro-Souza, William; Bonfim-Silva, Edna Maria; Schlichting, Alessana Franciele; Silva, Matheus de C.

doi:10.1590/s1415-43662013000600001

Cited by 25 publications

(17 citation statements)

References 19 publications

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“…Nitrogen, for being the most required nutrient, also modifies the duration of the oat development stages (Flores et al, 2012;Pietro-Souza et al, 2013). Since wheat and oat are similar species regarding the development cycle (Baier et al, 1988), the coefficients estimated for wheat by Streck et al (2003) and Alberto et al (2009) in the WE-Streck model can be employed in the simulation of the oat development cycle under conditions of N application.…”

Section: Introductionmentioning

confidence: 99%

Simulation of oat development cycle by photoperiod and temperature

Mantai

Silva

Marolli

et al. 2017

Rev. bras. eng. agríc. ambient.

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A B S T R A C TThe simulation of oat development cycle can be used in the planning of agricultural practices. The aim of the study was to simulate and validate the duration of oat development cycle by photoperiod, temperature and coefficients of development of wheat for use in the WEStreck model, considering different doses of N-fertilizer and systems of succession of high and low C/N ratio. The study was conducted in 2015 in a randomized block design with four replicates in a 4 x 2 factorial scheme, corresponding to N rates (0, 30, 60 and 120 kg ha -1 ) and oat cultivars (Barbarasul and Brisasul), respectively, in the soybean/oat and maize/ oat systems. The duration of the stages from emergence to anthesis and from anthesis to maturation of oats was simulated in the WE-Streck model. The minimum, optimum and maximum temperatures that effectively simulate the oat development cycle were 4, 22 and 30 °C from emergence to anthesis and 15, 25 and 35 °C from anthesis to maturation, respectively. The intermediate-cycle oat development was efficiently simulated by the WEStreck model using coefficients developed for wheat, with vegetative and reproductive cycles estimated at 89 and 43 days, respectively. Simulação do ciclo de desenvolvimento da aveia por fotoperíodo e temperatura R E S U M OA simulação do ciclo de desenvolvimento da aveia pode ser utilizada no planejamento de práticas agrícolas. Objetivou-se simular e validar a duração do ciclo de desenvolvimento da aveia por intermédio de fotoperíodo, temperatura e coeficientes de desenvolvimento do trigo para uso no modelo WE-Streck, considerando diferentes doses de N-fertilizante e sistemas de sucessão de alta e reduzida relação C/N. O estudo foi conduzido em 2015, em delineamento de blocos casualizados com 4 repetições em esquema fatorial 4 x 2 para doses de nitrogênio (0, 30, 60 e 120 kg ha -1 ) e cultivares de aveia (Barbarasul e Brisasul), respectivamente, no sistema soja/aveia e milho/aveia. No modelo WE-Streck foi simulada a duração das fases emergência à antese e antese à maturação da aveia. As temperaturas mínima, ótima e máxima que simulam com eficiência o ciclo de desenvolvimento da aveia da emergência à antese, foram 4, 22 e 30 °C, respectivamente e da antese à maturação 15, 25 e 35 °C, respectivamente. A simulação do desenvolvimento da aveia de ciclo médio pelo modelo WE-Streck foi eficiente usando coeficientes desenvolvidos para o trigo, com ciclo vegetativo e reprodutivo estimado em 89 e 43 dias, respectivamente.

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Section: Introductionmentioning

confidence: 99%

Simulation of oat development cycle by photoperiod and temperature

Mantai

Silva

Marolli

et al. 2017

Rev. bras. eng. agríc. ambient.

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“…Wheat has a diversity of genotypes that extends its adaptation to different environmental conditions, and it can achieve high productivity in several regions (Pietro-Souza et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Nitrogen and Potassium in Production, Nutrition and Water Use Efficiency in Wheat Plants

et al. 2016

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is a cereal used in food and feed for its nutritional properties. For nitrogen and potassium management, efficient use of water is required for greater availability and transportation of these nutrients. The objective of this study was to evaluate the effect of combinations of nitrogen and potassium doses in production, nutrition and water use efficiency in wheat. The experiment was held in a greenhouse with 8-dm 3 pots using Oxisol collected at a depth of 0-0.2 m under Cerrado vegetation. Base saturation was raised to 60%. The experimental design was a randomized block in a 5x5 factorial arrangement with five doses of nitrogen (0, 100, 200, 300 and 400 mg dm -3 ) and potassium (0, 90, 180, 270, 360 mg dm -3 ) with four replications. Soil moisture was maintained by an auto-irrigation system (3 kPa pressure). The experiment was collected at 95 days after plant emergence. We evaluated the dry mass of ears, shoots and roots, the total dry matter, nitrogen and potassium in grains, and the consumption and efficiency in water use. An analysis of variance and regression test at 5% probability was conducted using SAS statistical software (SAS Institute, Inc., Cary, North Carolina). The nitrogen and potassium alone increased the dry mass of ears by 31.47% and 20.91%, respectively. There was an interaction of nutrients on the dry mass of the shoots and the total dry matter. Potassium increases the concentration of nitrogen. Nitrogen and potassium promote gains in production, nutrition and water use efficiency.

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“…Sua importância é evidenciada pela sua participação em rotas metabólicas, formação de ATP, NADH e NADPH, clorofila, proteínas, ácidos nucleicos e enzimas Taiz & Zeiger (2013). O uso do N incrementa a produtividade de diversas culturas como nas grandes culturas do milho Pepke et al (2013), e trigo Pietro- Souza et al (2013), e também em hortaliças como chicória Gomes et al (2012) e alface Porto et al (2012).…”

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Efeito da adubação nitrogenada e da sazonalidade na produtividade de Ocimum basilicum L.

Ferreira

Bulegon

Yassue

et al. 2016

Rev. bras. plantas med.

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Recebido para publicação em 24/02/2015 Aceito para publicação em 03/09/2015 RESUMO: O manjericão (Ocimum basilicum L.) atualmente encontra-se distribuído por todos os continentes e foi introduzido no Brasil com a chegada da colonização italiana. As principais partes utilizadas para comercialização no Brasil são as folhas frescas ou secas. O presente trabalho teve como objetivo avaliar o efeito de doses da adubação nitrogenada, durante o cultivo na primavera e outono, nas características produtivas e na produtividade de manjericão, Alfavaca basilicão vermelho, em casa de vegetação. O delineamento utilizado foi em blocos casualizados, em esquema fatorial 6 x 2, com cinco repetições, onde o primeiro fator foi constituído de cinco doses de nitrogênio e uma testemunha (0,0; 45,0; 90,0; 135,0; 180,0 e 225,0 kg ha -1 de nitrogênio) e o segundo, pelas épocas de cultivo (primavera e outono). Para as características produtivas da cultivar de manjericão Alfavaca Basilicão vermelho, verificou-se que as doses de nitrogênio entre 90,0 a 135,0 kg ha -1 foram mais adequadas, elevando todas as características produtivas avaliadas, do cultivo de primavera. Quando observado o cultivo no outono, teve-se ajuste apenas para a projeção de copa, massa fresca de parte aérea e área foliar. Quando se obteve ajuste significativo, a dose de aproximadamente 110,0 kg ha -1 de nitrogênio foi a que promoveu maior desenvolvimento da cultura. Em relação às épocas de cultivo na primavera recomenda-se o uso de adubação mineral nitrogenada, porém quando esse cultivo é realizado outono, a adubação nitrogenada não é responsiva. Palavras-chaves:Fertilização, características produtivas, cultivo protegido.ABSTRACT: Effect of nitrogen fertilization on the production and productivity of Basil, red basil (Ocimum basilicum L.) in spring and autumn seasons. The basil (Ocimum basilicum L.) currently is distributed to all continents and was introduced in Brazil with the arrival of Italian colonization. The main parts used for commercialization in Brazil are the fresh or dried leaves. This study aimed to evaluate the effect of doses of nitrogen fertilization for cultivation in spring and fall, the yield characteristics and the productivity of basil, Basil red in the greenhouse. The experimental design was a randomized block, in a factorial 2 x 6 with five replications, where the first factor constituent of five nitrogen doses and one control (0.0; 45.0; 90.0; 135.0; 180.0 and 225.0 kg ha -1 of nitrogen) and by the second, the growing seasons (Spring and Autumn). For the productive characteristics of the cultivar red Basil, it was found that the nitrogen rates between 90.0 to 135.0 kg ha -1 were better, bringing all tested productive characteristics, the spring crop. When observed growing in the autumn, was only fit for the crown projection, fresh weight of shoot and leaf area. When there was significant adjustment, the dose of approximately 110.0 kg ha -1 of nitrogen was that promoted further development of culture. Regarding the growing seasons in the spring we...

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

Cited by 25 publications

References 19 publications

Simulation of oat development cycle by photoperiod and temperature

Simulation of oat development cycle by photoperiod and temperature

Nitrogen and Potassium in Production, Nutrition and Water Use Efficiency in Wheat Plants

Efeito da adubação nitrogenada e da sazonalidade na produtividade de Ocimum basilicum L.

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