Morphogenic and structural characteristics of tropical forage grasses managed under different regrowth periods in the Brazilian semi-arid region
DOI:
https://doi.org/10.5433/1679-0359.2019v40n1p283Keywords:
Andropogon gayanus, Cenchrus ciliares, Panicum maximum.Abstract
The objective of this study was to evaluate the morphogenetic and structural characteristics of tropical grasses managed under different regrowth periods. The experiment was conducted at the Federal Institute of Science and Technology Education of Rio Grande do Norte, located in the municipality of Apodi-RN, Brazil. The study design was in randomized blocks and the treatments were allocated in a 3x4 factorial arrangement, with three cultivars (Andropogon, Buffel and Massai) in four regrowth periods (21, 35, 49 and 63 days). The interaction between cultivar and age was significant for all studied variables, with the exception of leaf blade width and accumulation rate. The highest leaf appearance rates were observed in Buffel grass, regardless of the regrowth age. This characteristic was not influenced by age only in Andropogon grass. Higher stem elongation rates were observed in Buffel grass, while the lowest were observed in Massai grass until 35 days of regrowth, attributed to the presence of inflorescences. Canopy heights in Massai and Andropogon grass were greater than Buffel grass until 35 days of regrowth, Andropogon grass had higher height from 35 days of regrowth than the others. Andropogon grass showed higher rates of accumulation than Massai grass only at 21 days of regrowth, and no effects of regrowth age were observed for this variable. Buffel grass should be defoliated at 21 days, while Andropogon and Massai grass can be managed without losses between 21 and 63 days of regrowth.Downloads
References
DIFANTE, G. S.; NASCIMENTO JÚNIOR, D.; SILVA, S. C.; EUCLIDES, V. P. B.; MONTAGNER, D. B.; SILVEIRA, M. C. T.; PENA, K. S. Características morfogênicas e estruturais do capim-marandu submetido a combinações de alturas e intervalos de corte. Revista Brasileira de Zootecnia, Viçosa, MG, v. 40, n. 5, p. 955-963, 2011.
EMPRESA BRASILEIRA DE PESQUISA AGROPECUÁRIA - EMBRAPA. Centro Nacional de Pesquisa de Solo. Sistema brasileiro de classificação de solos. Rio de Janeiro: EMBRAPA Solos, 2013. 286 p.
EMERENCIANO NETO, J. V.; DIFANTE, G. S.; LANA, A. M. Q.; CAMPOS, N. R. F.; VERAS, E. L. L.; MORAES, J. D. Sward structure and herbage accumulation of massai guineagrass pastures managed according to pre-grazing heights, in the northeast of Brazil. Journal of Agricultural Science, Toronto, v. 9, n. 4, p. 155-163, 2017.
LOPES, M. N.; POMPEU, R. C. F. F.; SILVA, R. G.; REGADAS FILHO, J. G. L.; LACERDA, C. F.; BEZERRA, M. A. Fluxo de biomassa e estrutura do dossel em capim-braquiária manejado, sob lâminas de irrigação e idades de crescimento. Bioscience Journal, Uberlândia, v. 30, n. 5, p. 490-500, 2014.
LUNA, A. A.; DIFANTE, G. S.; MONTAGNER, D. B.; EMERENCIANO NETO, J. V.; ARAÚJO, I. M. M.; OLIVEIRA, L. E. C. Características morfogênicas e acúmulo de forragem de gramíneas forrageiras sob corte. Bioscience Journal, Uberlândia, v. 30, n. 6, p. 1803-1810, 2014.
MOREIRA, J. A. S.; FAGUNDES, J. L.; MISTURA, C.; LEMOS, N. L. S.; MOREIRA, J. N.; BACKES, A. A.; MORAIS, J. A. S.; OLIVEIRA, C. S.; MOREIRA, A. L. Características morfogênicas, estruturais e produtivas de acessos de capim-buffel. Semina: Ciências Agrárias, Londrina, v. 36, n. 1, p. 391-400, 2015.
PACIULLO, D. S. C.; GOMIDE, C. A. M.; CASTRO, C. R. T.; MAURÍCIO, R. M.; FERNANDES, P. B.; MORENZ, M. J. F. Morphogenesis, biomass and nutritive value of Panicum maximum under different shade levels and fertilizer nitrogen rates. Grass and Forage Science, Wiley, v. 72, n. 3, p. 590-600, 2017.
PEREIRA, V. V.; FONSECA, D. M.; MARTUSCELLO, J. A.; BRAZ, T. G. S.; SANTOS, M. V.; CECON, P. R. Características morfogênicas e estruturais de capim-mombaça em três densidades de cultivo adubado com nitrogênio. Revista Brasileira de Zootecnia, Viçosa, MG, v. 40, n. 12, p. 2681-2689, 2011.
SOUSA, B. M. L.; NASCIMENTO JÚNIOR, D.; SILVA, S. C.; MONTEIRO, H. C. F.; RODRIGUES, C. S.; FONSECA, D. M.; SILVEIRA, M. C. T.; SBRISSIA, A. F. Morphogenetic and structural characteristics of andropogon grass submitted to different cutting heights. Revista Brasileira de Zootecnia, Viçosa, MG, v. 39, n. 10, p. 2141-2147, 2010.
SKINNER, R. H.; NELSON, C. J. Effect of tiller trimming on phyllochron and tillering regulation during tall fescue development. Crop Science, Madison, v. 34, n. 5, p. 1267-1273, 1995.
TORO VELÁSQUEZ, P. A.; BERCHIELLI, T. T.; REIS, R. A.; RIVERA, A. R.; DIAN, P. H. M.; TEIXEIRA, I. A. M. A. Composição química, fracionamento de carboidratos e proteínas e digestibilidade in vitro de forrageiras tropicais em diferentes idades de corte. Revista Brasileira de Zootecnia, Viçosa, MG, v. 39, n. 6, p. 1206-1213, 2010.
Downloads
Published
How to Cite
Issue
Section
License
Copyright (c) 2019 Semina: Ciências Agrárias
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
Semina: Ciências Agrárias adopts the CC-BY-NC license for its publications, the copyright being held by the author, in cases of republication we recommend that authors indicate first publication in this journal.
This license allows you to copy and redistribute the material in any medium or format, remix, transform and develop the material, as long as it is not for commercial purposes. And due credit must be given to the creator.
The opinions expressed by the authors of the articles are their sole responsibility.
The magazine reserves the right to make normative, orthographic and grammatical changes to the originals in order to maintain the cultured standard of the language and the credibility of the vehicle. However, it will respect the writing style of the authors. Changes, corrections or suggestions of a conceptual nature will be sent to the authors when necessary.
