2005
DOI: 10.1590/s1516-35982005000200007
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Morfofisiologia do dossel de Panicum maximum cv. Mombaça sob lotação intermitente com três períodos de descanso

Abstract: RESUMO -Avaliaram-se o fluxo de biomassa e as características estruturais do dossel de Panicum maximum cv. Mombaça sob pastejo de lotação intermitente, com os períodos de descanso (PD) definidos em função do tempo necessário para a expansão de 2,5; 3,5 e 4,5 novas folhas por perfilho (tratamentos). A pastagem foi dividida em cinco ou seis piquetes, conforme o tratamento, caracterizando o delineamento de casualização completa. Utilizaram-se cinco novilhos Holandês/Zebu por tratamento, que pastejaram durante sei… Show more

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Cited by 65 publications
(76 citation statements)
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“…Increasing light interception from 90 to 95% also increased the accumulation rates. This result is in agreement with several studies, which show higher average growth rate of the pasture when the incident light interception is around 95% (Mello & Pedreira, 2004;Cândido et al, 2005;Carnevalli et al, 2006;Barbosa et al, 2007;Gomide et al, 2007).…”
Section: Resultssupporting
confidence: 93%
“…Increasing light interception from 90 to 95% also increased the accumulation rates. This result is in agreement with several studies, which show higher average growth rate of the pasture when the incident light interception is around 95% (Mello & Pedreira, 2004;Cândido et al, 2005;Carnevalli et al, 2006;Barbosa et al, 2007;Gomide et al, 2007).…”
Section: Resultssupporting
confidence: 93%
“…Shorter rest periods seem to be the solution for controlling the excessive stem elongation in grasses, as recorded in the work of Cândido et al (2005) with Mombasa grass. It is observed that the high elongation of the stem provides a reduction in the crude protein content, increase in the fiber content (CÂNDIDO et al, 2005), and thus can influence the behavior of grazing animals. Analyzing the defoliation intensity, there was no effect on the stem elongation.…”
Section: Resultsmentioning
confidence: 92%
“…This is because grasses subjected to long periods of rest present a high leaf area index causes shading in the base of the canopy, in this situation, the stem elongation is a strategy to elevate its leaves in search of light (GOMIDE et al, 2007). Shorter rest periods seem to be the solution for controlling the excessive stem elongation in grasses, as recorded in the work of Cândido et al (2005) with Mombasa grass. It is observed that the high elongation of the stem provides a reduction in the crude protein content, increase in the fiber content (CÂNDIDO et al, 2005), and thus can influence the behavior of grazing animals.…”
Section: Resultsmentioning
confidence: 99%
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“…Overall, more frequent grazing (95% of LI) showed more control of the stem elongation, and pastures grazed at 95% of LI and post-grazing height of 10 cm were the ones that showed the lowest SER (Table 5). Cândido et al (2005) observed increased stem elongation from the point at which the sward intercepted 95% of photosynthetically active radiation in Mombaça grass pastures subjected to intermittent grazing regime. Likewise, Da Silva et al (2009), in a study with Mombaça grass pastures under different defoliation regimes, observed that when the rest period was extended until 100% of LI, the stem elongation was greater than in pastures where the rest period was interrupted when the sward reached 95% of LI.…”
Section: Sward Light Interception (%)mentioning
confidence: 79%