Intervalo de corte na produção de massa seca e composição químico-bromatológica da Brachiaria brizantha cv. MG-5

Costa, Kátia Aparecida de Pinho; Oliveira, Itamar Pereira de; Faquin, Valdemar; Neves, B. P. das; Rodrigues, Cristiane; Sampaio, F. de M. T.

doi:10.1590/s1413-70542007000400037

Cited by 80 publications

(63 citation statements)

References 3 publications

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“…Similar results were obtained by Cecato et al (2004), in an experiment with Marandu palisadegrass and rates of P2O5, where ADF contents were not influenced by phosphorus rates, however, it were influenced by development time of culture, similarly verified by Costa et al (2007) in an experiment with Brachiaria. cv.…”

Section: Resultssupporting

confidence: 83%

Sources and rates of residual phosphorus for Marandu palisadegrass grown in Western São Paulo

Silva¹,

Buzetti²,

Dupas³

et al. 2016

Científica

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The pastures of western São Paulo are grown on low fertility soils, therefore, forage has low nutritional value resulting low dry matter yield (DMY).Thus, phosphorus fertilization and analysis of its residual are important for livestock, as it interferes the development speed of forage grasses, allowing better use of area and helping to pasture maintenance, in addition maintaining DMY at adequate levels. This study aimed at evaluating the effect of sources and rates of phosphorus applied in Marandu palisadegrass (Urochloa brizantha cv. Marandu) maintenance to reduce its seasonality, in order to achieve higher yield of these plants. A randomized block design used with 16 treatments and four replications in a 4 x 4 factorial, consisted of four sources of P (Phosphate from Araxá, Reactive phosphate from Arad, Simple superphosphate and thermophosphate) at rates (0, 100, 200 and 300 kg ha -1 of P2O5). A total of ten cuts were performed. DMY was quantified and contents of crude protein (CP), neutral detergent fiber (NDF), acid detergent fiber (ADF) were determined and P concentrations of Marandu palisadegrass shoot. The residual of sources and P rates did not influence DMY, CP, NDF and ADF contents and P concentrations of plant tissue, indicating that for maintaining Marandu palisadegrass P levels in soil were sufficient and this forage is not demanding regarding this nutrient.Additional keywords: acid detergent fiber; neutral detergent fiber; pasture; phosphorus fertilization; Urochloa brizantha cv. Marandu. ResumoAs pastagens do oeste paulista encontram-se cultivadas em solos de baixa fertilidade, consequentemente, as forrageiras possuem baixo valor nutritivo, acarretando baixa produtividade de matéria seca (PMS). Dessa forma, a adubação fosfatada e a análise de seu residual são importantes para a agropecuária, uma vez que interferem na velocidade de desenvolvimento das gramíneas forrageiras, permitindo melhor rendimento da área e ajudando na manutenção do pasto, além de manter a PMS em níveis adequados. Objetivou-se avaliar o efeito de fontes e doses de fósforo aplicadas na manutenção do capim-marandu (Urochloa brizantha cv. Marandu) para reduzir a estacionalidade do mesmo, visando a maiores produtividades dessas plantas. O delineamento experimental utilizado foi o de blocos ao acaso, com 16 tratamentos e quatro repetições, em esquema fatorial 4 x 4, constituído por quatro fontes de P (Fosfato de Araxá, Fosfato Reativo de Arad, Superfosfato Simples e Termofosfato), nas doses de (0; 100; 200 e 300 kg ha -1 de P2O5). Foram realizados dez cortes do capim-marandu. Quantificou-se a PMS e foram determinados os teores de proteína bruta (PB), fibra em detergente neutro (FDN), fibra em detergente ácido (FDA) e concentrações de P da parte aérea do capim--marandu. O residual de fontes e doses de P não influenciaram a PMS, os teores de PB, FDN e FDA e as concentrações de P do tecido vegetal, indicando que, para a manutenção do capim-marandu, os teores de P no solo foram suficientes e que esta forrageira não é exigente ...

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Section: Resultssupporting

confidence: 83%

Sources and rates of residual phosphorus for Marandu palisadegrass grown in Western São Paulo

Silva¹,

Buzetti²,

Dupas³

et al. 2016

Científica

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“…(Table 4). Costa et al (2007) found ADF contents of 34.0 (30 days) and 36.0% (60 days) in cv. Marandu.…”

Section: Resultsmentioning

confidence: 90%

Rehabilitation with forage grasses of an area degraded by urban solid waste deposits

et al. 2012

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-Dry matter yield and chemical composition of forage grasses harvested from an area degraded by urban solid waste deposits were evaluated. A split-plot scheme in a randomized block design with four replicates was used, with five grasses in the plots and three harvests in the subplots. The mineral content and extraction and heavy metal concentration were evaluated in the second cut, using a randomized block design with five grasses and four replicates. The grasses were Brachiaria decumbens cv. Basilisk, Brachiaria ruziziensis, Brachiaria brizantha cv. Marandu and cv. Xaraés, and Panicum maximum cv. Tanzânia, cut at 42 days of regrowth. The dry matter yield per cut reached 1,480 kg ha -1 ; the minimum crude protein content was 9.5% and the average neutral detergent fiber content was 62.3%. The dry matter yield of grasses was satisfactory, and may be an alternative for rehabilitating areas degraded by solid waste deposits. The concentration of heavy metals in the plants was below toxicity levels; the chemical composition was appropriate, except for phosphorus. The rehabilitated areas may therefore be used for grazing.

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“…Verifica-se que o teor de matéria seca foi maior no terceiro corte, variando de 12,18 g vaso -1 (1,5 vezes a dose recomendada de calcário) a 15,59 g vaso -1 (1,0 vez a dose recomendada de escória). Analisando o teor de proteína, observa-se que o valor decresceu a cada corte realizado, concordando com os resultados obtidos por Costa et al (2007), os quais observaram que o aumento no intervalo de corte refletiu em menor teor de proteína. Esse fato deve estar relacionado ao estádio de desenvolvimento da planta, visto que forragens mais maduras apresentam baixa proporção de carboidratos solúveis, carboidratos de baixa digestibilidade e aumento de proporção de lignina, celulose, hemicelulose e outras frações indigestíveis.…”

Section: Resultsunclassified

Atributos químicos, produção e qualidade do capim braquiária em solos corrigidos com calcário e escória silicatada

et al. 2010

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Chemical attributes, production and quality of signal grass in soils amended with limestone and calcium silicate slagPastures are the basis of cattle production systems, evidencing their importance and the need for other management practices that result in higher efficiency of these systems. This study aimed to evaluate the soil chemical properties (pH, Ca, Mg and H+Al), the potential production and the chemical composition of signal grass (Brachiaria decumbens Stapf) in soil amended with different limestone doses and calcium silicate slag. The experiment was carried out in a greenhouse, in the period 2006/2007, at the Universidade Estadual Paulista, Ilha Solteira-SP. Five doses of limestone and calcium silicate slag were tested, 0.0; 0.5; 1.0; 1.5; 2.0 times the recommended dose. A complete randomized design was used with four repetitions. Soil chemical composition was evaluated after incubation with the amendment, tillering, dry matter, protein, NDF (neutral detergent fiber) and ADF (acid detergent fiber). Both amendments provided to the soil positive effect in relation to the pH and content of calcium and magnesium. The variables dry matter and ADF were not significantly influenced by the types and doses of the amendments.

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Intervalo de corte na produção de massa seca e composição químico-bromatológica da Brachiaria brizantha cv. MG-5

Cited by 80 publications

References 3 publications

Sources and rates of residual phosphorus for Marandu palisadegrass grown in Western São Paulo

Sources and rates of residual phosphorus for Marandu palisadegrass grown in Western São Paulo

Rehabilitation with forage grasses of an area degraded by urban solid waste deposits

Atributos químicos, produção e qualidade do capim braquiária em solos corrigidos com calcário e escória silicatada

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