NDLI: Produção de matéria seca e fluxo de tecidos de Cynodon spp . cv. Tifton 85 em resposta a doses de nitrogênio

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Produção de matéria seca e fluxo de tecidos de Cynodon spp . cv. Tifton 85 em resposta a doses de nitrogênio

Content Provider	Semantic Scholar
Author	Braga, Gustavo Pinedo, Lerner Arévalo Herling, Valdo Rodrigues Luz, Pedro Henrique De Cerqueira Lima, César Gonçalves De
Copyright Year	2008
Abstract	The objective of this study was to determine dry matter production (DMP) and tissue flow of Tifton 85 bermudagrass ( Cynodon spp .) under the effect of four doses of nitrogen (NO-O, N1-45, N2-90, N3-135 mg/kg soil) in the form of nitrate of ammonium in a randomized design, with five replications. Nitrogen increased DMP of leaves and stems (p 0.05). The DMP of leaves presented quadratic behavior in response to the nutrient up to the dose of 90 mg/kg. With regard to the tissue flow, the highest doses of N caused higher leaf elongation rate, higher leaf emergence rate and larger number of live leaves per tiller (p 0.05). For maximum dry matter yield of Tifton 85 bermudagrass, higher doses than the used in this experiment would be necessary, while for stems the maximum yield was reached with 133,5 mg N/kg soil. The 135 mg/kg N dose had greater influence on the tissue flow of the plant. The rate of leaf elongation and number of live leaves per tiller were better correlated with the dry matter yield. A low rate of senescence is of basic importance for the maintenance of a high number of live leaves per tiller. Tifton 85 bermudagrass crude protein provided higher values when 135 mg N/kg soil was used.
Starting Page	851
Ending Page	857
Page Count	7
File Format	PDF HTM / HTML
DOI	10.4025/actascianimsci.v22i0.3235
Volume Number	22
Alternate Webpage(s)	http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/download/3235/2264
Alternate Webpage(s)	https://doi.org/10.4025/actascianimsci.v22i0.3235
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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