Como a Idade Do Perfilho E a Adubação Nitrogenada Modificam as Características Estruturais Do Capim-Marandu Diferido?

Carvalho, Angélica Nunes de; Alves, L. C.; Santos, Manoel Eduardo Rozalino; Rocha, Gabriel de Oliveira; Rodrigues, P.H. Marçal; Carvalho, Bruno Humberto Rezende

doi:10.1590/1809-6891v20e-44460

Cited by 3 publications

(4 citation statements)

References 21 publications

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“…The increased population density of tillers when receiving nitrogen fertilization of 150 kg N ha −1 year −1 may be associated with the N stimulus in the growth and multiplication of plant cells, as this nutrient is required in large quantities by C4 forages, which express their maximum tillering under favorable growth conditions (water, light, temperature, and nutrients) (Martuscello et al, 2019), as already demonstrated in other studies with the species U. brizantha (Paiva et al, 2011;Carvalho et al, 2019).…”

Section: Table 2 Productivity and Structural Characteristics Of Maranmentioning

confidence: 53%

“…growth rate possibly related to an N saturation, with no response to the biostimulant. Considering the significant influence on the biomass flow (Nave, Pedreira, & Pedreira, 2010) provided by the use of higher doses of nitrogen fertilizers (Carvalho et al, 2019), the highest dose of nitrogen fertilization possibly provided higher pasture growth to the point of not allowing the biostimulant doses used to be sufficient to express higher productivity, as the demand for nitrogen has already been met by the nitrogen fertilization. 4.…”

Section: Table 2 Productivity and Structural Characteristics Of Maranmentioning

confidence: 99%

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Growth bioestimulant in marandu grass cultivated in the amazon biome

Reis

Oliveira

Silva

et al. 2020

Semina: Ciênc. Agrár.

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This study aimed to evaluate the effects of a biostimulant on the morphogenesis, structure, productivity, and chemical composition of Urochloa brizantha cv. Marandu, managed under two nitrogen fertilization levels. Collections were carried out during the dry (June to September) and the rainy season (September to April). The experimental area was divided into 48 plots of 8 m2 each, using a randomized block design in a 4 × 2 factorial arrangement (0, 1, 2, and 3 L ha−1 of biostimulant × 50 and 150 kg N ha−1 year−1), and subdivided over time into dry and rainy seasons. Treatments were applied in a single dose. An interaction was observed between biostimulant and nitrogen fertilization for the total forage dry matter production and daily forage dry matter production, in which an increase of 30.1 and 25.3% was observed in the total dry matter production and 33.7 and 27.6% in the daily dry matter production when using 1 and 2 L ha−1 of biostimulant, respectively, compared to the non-application of biostimulant and with fertilization of 50 kg N ha−1 year−1. The leaf life-span showed a triple interaction (biostimulant × nitrogen fertilization × season), and a decomposition of the interaction showed that the fertilization of 150 kg N ha−1 year−1 provided a shorter leaf life-span during the dry season, with no difference for the other combinations of factors. No interactions were found for the chemical-bromatological composition, with no differences for the biostimulant application. Biostimulant doses of 1 and 2 L ha−1 increase the dry matter production per hectare in the nitrogen fertilization of 50 kg N ha−1 year−1, but its action is not effective with the highest nitrogen fertilization (150 kg N ha−1 year−1).

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Section: Table 2 Productivity and Structural Characteristics Of Maranmentioning

confidence: 53%

Section: Table 2 Productivity and Structural Characteristics Of Maranmentioning

confidence: 99%

Growth bioestimulant in marandu grass cultivated in the amazon biome

Reis

Oliveira

Silva

et al. 2020

Semina: Ciênc. Agrár.

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“…Marandu diferido e adubado com duas doses de nitrogênio (baixa, 50 kg ha-1 e alta, 200 kg ha -1 ) foram avaliadas por Carvalho et al (2019), que confirmaram que o perfilho jovem tem melhores características estruturais do que os perfilhos maduros e velhos. Quanto à adubação, verificaram que no início do diferimento o dossel adubado com alta dose de N apresentou maior percentual de perfilho jovem (36,8%).…”

Section: Altura Inicial Do Pasto No Diferimento X Período De Diferimento X Adubaçãounclassified

Práticas De Manejo No Ensino De Zootecnia: A Influência De “Repousa Patas” Na Fertilidade De Coelhos De Grande Porte

Souza¹,

Gomes²

2020

Geração E Difusão De Conhecimento Científico Na Zootecnia

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EditoraDireitos para esta edição cedidos à Atena Editora pelos autores.Todo o conteúdo deste livro está licenciado sob uma Licença de Atribuição Creative Commons. Atribuição 4.0 Internacional (CC BY 4.0). O conteúdo dos artigos e seus dados em sua forma, correção e confiabilidade são de responsabilidade exclusiva dos autores, inclusive não representam necessariamente a posição oficial da Atena Editora. Permitido o download da obra e o compartilhamento desde que sejam atribuídos créditos aos autores, mas sem a possibilidade de alterá-la de nenhuma forma ou utilizá-la para fins comerciais.A Atena Editora não se responsabiliza por eventuais mudanças ocorridas nos endereços convencionais ou eletrônicos citados nesta obra.Todos os manuscritos foram previamente submetidos à avaliação cega pelos pares, membros do Conselho Editorial desta Editora, tendo sido aprovados para a publicação.

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“…The patterns of emergence and survival of tillers result in variations in the percentage of young, mature and old tillers in the pasture (M. E. R. Santos et al, 2018;Alves et al, 2019; M. E. R. Santos et al, 2020;A. N. D. Carvalho et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Contribution of tiller age category to herbage accumulation of Marandu palisadegrass under two fertilization regimes

Santos

Carvalho

Paiva

et al. 2022

Semina: Ciênc. Agrár.

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Based on the hypothesis that climate and fertilizers influence the proportion of tiller age categories in the canopy and, consequently, in herbage accumulation, the objective of this study was to determine the population density and the contribution of tiller age categories for herbage accumulation of Urochloa brizantha cv. Marandu during the year and in response to phosphate and nitrogen fertilization. The treatments consisted of two fertilization strategies: low and high fertilization and three tiller ages (young, mature and old), evaluated at four times of the year: winter, early and late spring, and summer. The total number of tillers and the proportion of young tillers were higher in late spring and summer. The growth and herbage accumulation rates showed a typical seasonal pattern and were higher in the canopy under high fertilization. Old tillers contributed more to control the total stem growth rate, as well as the canopy senescence rate. The highest percentage of young tillers is related to the high herbage accumulation in the Marandu palisadegrass canopy.

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Como a Idade Do Perfilho E a Adubação Nitrogenada Modificam as Características Estruturais Do Capim-Marandu Diferido?

Cited by 3 publications

References 21 publications

Growth bioestimulant in marandu grass cultivated in the amazon biome

Growth bioestimulant in marandu grass cultivated in the amazon biome

Práticas De Manejo No Ensino De Zootecnia: A Influência De “Repousa Patas” Na Fertilidade De Coelhos De Grande Porte

Contribution of tiller age category to herbage accumulation of Marandu palisadegrass under two fertilization regimes

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