2014
DOI: 10.5433/1679-0359.2014v35n6p3305
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Parâmetros morfogênicos e produtividade do capim-Pioneiro submetido a doses de nitrogênio

Abstract: ResumoObjetivou-se por meio deste trabalho avaliar o efeito de nitrogênio sobre a morfogênese e rendimento forrageiro do capim-elefante cv. Pioneiro. O delineamento experimental utilizado foi em blocos casualizados com cinco repetições, totalizando 20 unidades experimentais. Os tratamentos corresponderam a quatro doses de nitrogênio (100, 200, 300 e 400 kg ha -1 ano -1 ). O experimento foi mantido sob condições irrigadas. Foram realizados cortes avaliativos a 50 cm do solo com valores de interceptação luminosa… Show more

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citations
Cited by 11 publications
(13 citation statements)
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References 13 publications
(18 reference statements)
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“…Under conditions of low luminous intensity, tropical grasses may prioritize stem yield to allow light to reach the base of the canopy (HODGSON; SILVA, 2002). Lobo et al (2014) verified the positive effect of nitrogen enrichment rate on SER in elephant grass 'Pioneiro' and showed an increase of 0.001 cm til -1 day -1 when there was an increase of 1 kg of nitrogen.…”
Section: Resultssupporting
confidence: 53%
See 1 more Smart Citation
“…Under conditions of low luminous intensity, tropical grasses may prioritize stem yield to allow light to reach the base of the canopy (HODGSON; SILVA, 2002). Lobo et al (2014) verified the positive effect of nitrogen enrichment rate on SER in elephant grass 'Pioneiro' and showed an increase of 0.001 cm til -1 day -1 when there was an increase of 1 kg of nitrogen.…”
Section: Resultssupporting
confidence: 53%
“…According to Skinner and Nelson (1995), leaf elongation is restricted to the dividing zone at the base of the expanding leaf, and this zone is a site with great demand for nutrients, mainly nitrogen. Lobo et al (2014), evaluating the response of elephant grass 'Pioneiro' to doses of nitrogen (100, 200, 300, and 400 kg ha -1 year -1 ) observed an increase in LER of 17.67% between the lowest and the highest fertilization doses they used. In the present study, an increase of 58.99% was observed between the treatment with no fertilization and that with a dose of 800 kg N ha -1 year -1 .…”
Section: Resultsmentioning
confidence: 99%
“…Nitrogen management is complex recommendation which is subject, dependent on soil and climatic conditions, occurring losses by leaching, volatilization, denitrification erosion due to multiplicity of chemical and biological reactions [13]. Due to the importance of agriculture to elephant grass, more information about economic and rational use of fertilizers is needed [14]. Because of the importance of agriculture to elephant grass, more information about economic and rational use of fertilizers is needed [15], in addition to actually check for production increases with increasing nitrogen dose or as a dose of production remained stable (maximum point).…”
Section: Introductionmentioning
confidence: 99%
“…Increases in forage production through nitrogen fertilization of pasture are mentioned by several authors (Lopes et al, 2013;Lobo et al, 2014).…”
Section: Resultsmentioning
confidence: 99%
“…Every 50 kg of N applied increases DMAR by 11.1 kg ha -1 day -1 . Forage DMAR is an important variable, since it reflects the balance in the dynamics of the plant growth and senescence rates (Fagundes et al, 2005;Lobo et al, 2014). Maranhão et al, (2010) obtained a 109% increase in the daily forage production of Brachiaria grass in response to the application of 200 kg ha -1 year -1 of N in relation to the treatment without fertilization.…”
Section: Resultsmentioning
confidence: 99%