Produtividade e valor nutritivo da Brachiaria brizantha cv. Marandu em um sistema silvipastoril

Sousa, Luciano Fernandes; Maurício, Rogério Martins; Gonçalves, Lúcio Carlos; Saliba, E. O. S.; Moreira, Guilherme Rocha

doi:10.1590/s0102-09352007000400032

Cited by 46 publications

(37 citation statements)

References 10 publications

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“…The percentage of dry matter was higher in the assessed heights in the monoculture system compared to the system intercropped with Babassu, similar only at 40 cm height, which in both systems did not differ statistically for dry matter percentage (Figure 4). The same was reported by Souza et al (2007) who found that shading significantly affected the dry matter content of forage due to a higher proportion of leaves and a higher ratio of living:dead material on grass. According to Gobbi et al (2011), another factor that reduces dry matter content of the grass in the shaded system is leaf anatomy modification because the increased specific leaf area leads to a decrease in the forage mass density and reduces sclerenchymatous tissue and the thickness of the palisade parenchyma.…”

Section: Resultssupporting

confidence: 81%

Mombasa grass characterisation at different heights of grazing in an intercropping system with Babassu and monoculture

Rodrigues

Santos

et al. 2016

SCA

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The aim of this study was to evaluate agronomic and structural traits, as well as root mass, of Panicum maximum cv. Mombasa in different conditions of animal grazing in the same pasture in a monoculture system and a Pasture-Forestry Intercropping System (intercropped with Babassu palm trees). Evaluations were performed from December 2012 to February 2013. The systems were kept under continuous grazing with sheep (20 kg live weight on average) throughout the evaluation period. The design was completely randomised into split plots, in which each plot was the system and the subplots were grazing heights, with three sample cycles. The Babassu palm tree influenced the production of the aerial-part dry matter in the intercropping system due to a decrease in grass tillering caused by shading stress. The root dry matter decreased influenced by shading and intensity of animal grazing in the evaluated heights, leading to a reduction as decreased the grass height. The monoculture system led to better results for the same heights in all parameters in comparison to the intercropping system, including the number of tillers, dry matter production (DM), leaf-area index (LAI) and DM (%), which were higher in the monoculture system regardless of the assessed heights. The natural shade of Babassu palms negatively affected the productive and structural traits of Panicum maximum cv. Mombasa, thereby altering the grass structure and lowering its productive capacity. Key words: Root dry matter. Number of tillers. Shading. ResumoObjetivou-se com esse trabalho avaliar as características agronômicas, estruturais e massa de raiz do Panicum maximum cv. Mombaça em diferentes condições de pastejo dentro do mesmo pasto em sistema de monocultivo e integrado pastagem-floresta (consorciado com palmeiras de babaçu). Foram realizadas avaliações nos meses de dezembro de 2012 a fevereiro de 2013. Os sistemas foram mantidos sob pastejo contínuo com ovinos (média de 20 kg de peso vivo) durante todo período de avaliação. O delineamento foi inteiramente ao acaso em parcelas subdivididas, sendo: parcelas os sistemas e subparcelas as alturas de pastejo, com 3 ciclos de coleta. A presença da palmeira do babaçu influenciou a produtividade de massa seca da parte aérea em sistema consorciado devido a diminuição no perfilhamento da gramínea ocasionado pelo estresse do sombreamento. A produção de massa seca de raiz decresceu sendo influenciada pelo sombreamento e pela intensidade de pastejo nas alturas avaliadas, ocorrendo diminuição à medida que decresceu a altura da gramínea. O sistema de monocultivo teve melhores resultados para as mesmas alturas em todos os parâmetros avaliados em comparação com o sistema consorciado, onde número de perfilhos, produção de matéria seca (MS) da parte aérea, índice de área folear (IAF), % de MS foram maiores em sistema de monocultivo independente das alturas avaliadas. O sombreamento natural das palmeiras de babaçu influenciou negativamente as características produtivas e estruturais do Panicum maximum cv. Mombaça, alt...

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Section: Resultssupporting

confidence: 81%

Mombasa grass characterisation at different heights of grazing in an intercropping system with Babassu and monoculture

Rodrigues

Santos

et al. 2016

SCA

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“…Such effect is common when comparing grasses grown under direct sunlight and plants Silveira Júnior, O. et al under systems with light restriction, wherein the higher forage mass produced under direct sunlight provides a lower concentration of N in the plants. However, a similar accumulation of N is verified in both systems (SOARES et al, 2009;SOUZA et al, 2007).…”

Section: Resultssupporting

confidence: 65%

Productive efficiency of mombasa grass in silvopastoral system under pasture deferment and nitrogen fertilizer

Júnior

Santos

Rodrigues

et al. 2017

SCA

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This study aimed to evaluate the efficiency of Mombasa grass in a silvopastoral system and submitted to different nitrogen fertilization rates and pasture management strategies. Treatments consisted of four nitrogen fertilizer doses (0.0, 125.0, 187.5, and 250.0 kg N ha -1 year -1 ) and three cutting heights (70, 90, and 105 cm). Plant agronomic and physiologic efficiencies, as well as nitrogen use and accumulation by plants, forage production, and increments of forage production, were verified for the application of nitrogen fertilizer. Nitrogen fertilization was only efficient for grasses cut at 105 cm, where 75% of the applied nitrogen at a dose of 125 kg ha -1 year -1 was recovered. Yet the grasses cut at 70 and 90 cm presented low results for nitrogen fertilization, showing plants with low physiological and agronomic efficiencies. For Mombasa grass in a silvopastoral system, nitrogen fertilization is more efficient when applied at lower doses and for plants cut at higher heights. Key words: Megathyrsus maximus. Agroforestry systems. Pre-grazing height. Post-grazing height. ResumoObjetivo de avaliar a eficiência do capim Mombaça manejado em sistemas silvipastoril submetido adubação nitrogenada e estratégias de manejo de corte do pasto. Avaliou-se o capim Mombaça manejado em sistema silvipastoril, com quatro doses de nitrogênio (0, 125; 187,5 e 250 kg ha -1 ano -1 ) e três alturas de corte do capim (70, 90 e 105 cm). Verificando a eficiência da planta quanto a utilização do nitrogênio, eficiência agronômica, eficiência fisiológica, acúmulo de nitrogênio na planta, produção de forragem e o incremento de produção de massa de forragem com aplicação do adubo nitrogenado. A adubação nitrogenada foi eficiente somente para o capim manejado a 105 cm de altura de corte, onde foi possível obter nas doses de 125 kg ha -1 ano -1 recuperação de 75% do nitrogênio aplicado. Já o capim manejado a 70 e 90 cm apresentou baixo resultado com uso de adubação nitrogenada, com baixa eficiência fisiológica e agronômica. O capim Mombaça em sistema silvipastoril com uso de fertilizante nitrogenado é mais eficiente em baixos níveis de nitrogênio aplicado e nas maiores alturas de corte do pasto. Palavras-chave: Megathyrsus maximus. Sistemas Agroflorestais. Altura pré-pastejo. Altura pós-pastejo.

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“…and Panicum spp. genuses) and tropical legumes (Arachis, Pueraria and Stylozanthes) (Paciullo et al, 2007;Sousa et al, 2007;Soares et al, 2009;Gobbi et al, 2009).…”

Section: Resultsmentioning

confidence: 99%

<b>Growing tropical forage legumes in full sun and silvopastoral systems

Araújo

Silva

Rocha

et al. 2017

Acta Sci. Anim. Sci.

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ABSTRACT. Growth was evaluated three tropical forage legumes in two cropping systems: silvopastoral system (SSP) and full sun. A completely randomized design was adopted in factorial three legumes (estilosanthes cv. Campo Grande (Stylozanthes macrocephala x Stylozanthes capitata), tropical kudzu (Pueraria phaseoloides (Roxb.) Benth) and macrotiloma (Macrotyloma axillare cv. Java)) x two farming systems, with 4 repetitions. A eucalyptus SSP already deployed, with spatial arrangement of 12 x 2 m between trees was used. Legumes were planted in January 2014 a uniform cut being made in May 2014. The court assessment was carried out 125 days after the uniformity cut. There was difference for mass production of dry legumes (PMMSL) between cultivation systems, evidencing increased productivity in the farming full sun. The macrotiloma showed higher PMSL (5.29 kg DM ha ) in the sun growing full. The cultivation of legumes in SSP increased the levels of mineral matter, crude protein and neutral detergent fiber. The shade provided by the SSP caused a reduction in the mass of dry matter production, but also altered the chemical composition of the studied legumes.

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Produtividade e valor nutritivo da Brachiaria brizantha cv. Marandu em um sistema silvipastoril

Abstract: Produtividade e valor nutritivo da

Cited by 46 publications

References 10 publications

Mombasa grass characterisation at different heights of grazing in an intercropping system with Babassu and monoculture

Mombasa grass characterisation at different heights of grazing in an intercropping system with Babassu and monoculture

Productive efficiency of mombasa grass in silvopastoral system under pasture deferment and nitrogen fertilizer

<b>Growing tropical forage legumes in full sun and silvopastoral systems

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