Estrutura Do Dossel E Características De Perfilhos Em Pastos De Capim-Piatã Manejados Com Doses De Nitrogênio E Períodos De Diferimento Variáveis

Santos, Manoel Eduardo Rozalino; Sousa, Bráulio Maia de Lana; Rocha, Gabriel de Oliveira; Freitas, Cássia Aparecida Soares; Silveira, M. C. T. da; Sousa, Diogo Olímpio Chaves de

doi:10.1590/1089-6891v18e-37547

Cited by 14 publications

(13 citation statements)

References 22 publications

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“…A greater proportion of stalks, in places where pasture is managed to greater heights (Table 1), may be the result of the high competition for light between the tillers in these places. Consequently, the upper part of the canopy intercepts more photosynthetically active radiation (Santos et al, 2017).…”

Section: Resultsmentioning

confidence: 99%

“…The tiller is the basic unit of the grass, and the structural characteristics of the tillers determine the structure of the pasture. The largest number of live tillers is essential for the productivity of the pasture, as long as there is no compromise in its growth (Santos et al, 2017). A greater density of tillers ensures denser pastures, which sustains more livestock units (Fonseca et al, 2013).…”

Section: Resultsmentioning

confidence: 99%

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Ecophysiology of Andropogon grass subjected to different cutting frequencies and intensities

Lima

Rodrigues

Sousa

et al. 2020

Rev. bras. eng. agríc. ambient.

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The objective of this study was to evaluate the morphogenic and structural characteristics, and demographic patterns of Andropogon gayanus subjected to different cutting frequencies and intensities. A completely randomized design was adopted in a 3 × 2 factorial arrangement, corresponding to three cutting heights (50, 70, and 90 cm), and two cutting intensities (50 and 70%) with four repetitions, totaling 24 plots of 7.50 × 6.25 m. For morphogenesis, there was no interaction effect (P ≤ 0.05) of treatments on stem elongation rate, leaf appearance rate, and phyllochron rate. The highest rate of leaf elongation was observed at a height of 90 cm and cut intensity of 50%, with 1.69 and 0.84 cm tiller-1 d-1 of leaf elongation at heights of 50 and 70 cm, respectively. For forage production, there was no interaction (p > 0.05) between cutting intensity and cutting height. When the pasture was managed to a cutting height of 90 cm, there was a greater increase in dry leaf mass, stalk dry mass, dead forage dry mass, and total dry forage mass, which was 50.89% and 53.29% higher than pasture heights of 50 and 70 cm, respectively. There was no interaction between factors on demographic characteristics (p > 0.05). A cutting height of 70 cm with a cutting intensity of 50% is recommended when handling this grass.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Ecophysiology of Andropogon grass subjected to different cutting frequencies and intensities

Lima

Rodrigues

Sousa

et al. 2020

Rev. bras. eng. agríc. ambient.

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“…In terms of ruminant feeding, a lower stem proportion is desirable, meaning a greater number of green leaves and lower fiber content, with a consequently better nutritive value [19]. However, it is worth mentioning that the higher amount of DMSS obtained when the nitrogen fertilization was applied on the day of BRS Piatã defoliation is due to the higher grass production in this treatment, since more developed tillers require more robust structural organs to support the greater weight of the plant [20].…”

Section: Resultsmentioning

confidence: 99%

Investigating the Optimal Day for Nitrogen Fertilization on Piatã palisadegrass and Quênia guineagrass after Defoliation

Faria

Avelino

Cabral³

et al. 2019

JEAI

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Considering that nitrogen is the main macronutrient limiting pasture productivity, the aim of this study was to investigate the most appropriate day for nitrogen fertilization of the grasses Brachiaria brizantha BRS Piatã and Panicum maximum BRS Quênia. The experiment was conducted in a greenhouse in the city of Rondonópolis, located in the state of Mato Grosso, Brazil, using a completely randomized design. The treatments consisted of five nitrogen fertilization periods: 0; 2; 4; 6 and 8 days after defoliation. The dry mass of the leaf blade (DMLB), dry mass of stem + sheath (DMSS), dry mass of residue (DMRES) and root dry mass (RDM) were evaluated. The non-structural carbohydrate of the grass roots was also quantified. The later nitrogen fertilization after defoliation reduced DMLB (P< .01) and DMSS (P< .01) of the BRS Piatã palisadegrass, and DMRES of both grasses (P< .01). Higher levels of water soluble carbohydrates were observed when nitrogen fertilization was performed on grass cutting (day 0). Nitrogen fertilization of the BRS Piatã palisadegrass close the time of defoliation is recommended. For Quênia guineagrass, nitrogen can be applied between the cutting day and the eighth day after defoliation. For the root system, there is a higher content of water soluble carbohydrates in the BRS Piatã palisadegrass and greater accumulation of starch in the BRS Quênia guineagrass.

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“…Ao avaliar combinações entre períodos de diferimento (longo 127 dias; e curto 79 dias) e condições de adubação nitrogenada (0, 40, 80 e 120 kg N ha -1 ) em pastos de U. brizantha cv. Piatã, Santos et al (2017), perceberam que o menor período de diferimento resultou em maiores números de perfilhos basais e aéreos vegetativos, assim como número inferior de perfilho basal reprodutivo. O nitrogênio aumentou o comprimento da lâmina foliar e do colmo do perfilho vegetativo.…”

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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Estrutura Do Dossel E Características De Perfilhos Em Pastos De Capim-Piatã Manejados Com Doses De Nitrogênio E Períodos De Diferimento Variáveis

Cited by 14 publications

References 22 publications

Ecophysiology of Andropogon grass subjected to different cutting frequencies and intensities

Ecophysiology of Andropogon grass subjected to different cutting frequencies and intensities

Investigating the Optimal Day for Nitrogen Fertilization on Piatã palisadegrass and Quênia guineagrass after Defoliation

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

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