Características morfogênicas e estruturais do capim-tanzânia submetido a doses de fósforo e nitrogênio

Patês, Neusete Maria da Silva; Pires, Aureliano José Vieira; Silva, Cristina Cavalcante Félix da; Santos, Leonardo Peterson dos; Carvalho, Gleidson Giordano Pinto de; Freire, Mario

doi:10.1590/s1516-35982007000800005

Cited by 46 publications

(47 citation statements)

References 10 publications

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“…Given these considerations, we can infer that doses of P above 25 mg dm -3 decreases leaf elongation (LLB) and, concurrently, the traits PH and WLB. The linear increase (p>0.05) of NT with the addition of P (Figures 3 and 4) is consistent with the results observed by Patês et al (2007), Ferreira et al (2008 and Guedes et al (2009). These authors emphasize the importance of P for the initial establishment of forage, due to the higher development of roots and, consequently, higher tillering.…”

Section: Resultssupporting

confidence: 91%

“…Patês et al (2007) have found that cell elongation rate has quadratic behavior in P. maximum in response to different doses of P, corroborating the results obtained from this study for LLB. According to Oliveira et al (2014), PH is mainly influenced by cell elongation, while WLB foliar is determined by the number of cell divisions that occur perpendicular to the leaf central leaf.…”

Section: Resultssupporting

confidence: 90%

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Doses of phosphorus on initial development and forage production of cultivars of Panicum maximum

Torres¹,

Teodoro²,

Ribeiro³

et al. 2016

Biosci. J.

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Phosphorus shortage in the Savanna is one of the main limiting factors for forage production and directly responsible for the degradation of pastures in this Brazilian region. Thus, the aim of this study was to evaluate the effect of increasing doses of P on the initial development and forage production of four cultivars of P. maximum. The experiment was conducted during the months of December 2010 to May 2011 at Universidade Estadual de Mato Grosso do Sul, Unit of Aquidauana-MS. It was used the completely randomized design in a factorial scheme 4x5, with four replications. The experimental unit consists of polyethylene pots with 5 L capacity arranged in countertop in greenhouse. The first factor consisted of four P. maximum cultivars (Massai, Mombaça, Áries and Atlas), while the second factor consists of five doses of phosphorus (0, 5, 10, 30 and 45 mg dm -3 ). It was evaluated the following morphometric traits: plant height, length and width of the leaf blade, number of tillers, dry mass of shoot and of roots at 60 DAS. The approximate dose of 25 mg dm -3 of phosphorus provided better initial development and forage production in all cultivars evaluated of Panicum maximum. Mombaça cultivar has better initial development and forage production about to the others.

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Section: Resultssupporting

confidence: 91%

Section: Resultssupporting

confidence: 90%

Doses of phosphorus on initial development and forage production of cultivars of Panicum maximum

Torres¹,

Teodoro²,

Ribeiro³

et al. 2016

Biosci. J.

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“…N fertilization has a direct effect over the tiller population and its density also in tropical grasses, which is determinant to forage biomass production in pastures, according to Alexandrino et al (2004), Fagundes et al (2005), Pates et al(2007), that evaluated Brachiaria brizanta cv. Marandu, Brachiaria decumbens cv.…”

Section: The Importance Of Nitrogen In Pasturesmentioning

confidence: 99%

The utilization of tropical legumes to provide nitrogen to pastures: A review

Gimenes¹,

Barbosa²,

Gerdes³

et al. 2017

Afr. J. Agric. Res.

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. In this context, the introduction of forage legumes in the pasture system is fundamental to fix nitrogen from the atmosphere and supply it to grasses, increasing its production and persistence, enhancing animal nutrition as it grazes, at the same time. Still, the use of plant mixes in the system brings further benefits to it, such as better utilization of fertilizers as well as enhances the nutrient cycle and soil coverage. However, there are still many gaps in our knowledge regarding intercropping legumes and grasses, especially the use of tropical legumes. The purpose of this review is compiles data about forage legumes as well as analyses them to find new tendencies and gaps on the knowledge to shed some lights on researches in this area. We also expect that this review will help researchers and producers to understand the role of forage legumes in a pasture system and that there will be an increase in its utilization worldwide, especially in the tropics, where nitrogen is easily leached and lost from the pastures. With emphasis on description of promising tropical legumes but still little used Arachis pintoi, Macrotyloma and Neonotonia whightii.

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“…One of the greatest problems in the establishment and maintenance of pastures in Brazilian soils is in the extremely low levels of available phosphorus (P) as well as the high adsorption capacity for Fe and Al oxides. Thus, the phosphate fertilization becomes a necessary practice (Patês et al, 2007) and essential as the important role in plant morphogenesis (Martuscello et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

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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Características morfogênicas e estruturais do capim-tanzânia submetido a doses de fósforo e nitrogênio

Cited by 46 publications

References 10 publications

Doses of phosphorus on initial development and forage production of cultivars of Panicum maximum

Doses of phosphorus on initial development and forage production of cultivars of Panicum maximum

The utilization of tropical legumes to provide nitrogen to pastures: A review

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

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