Evaluation of Natural Regrowth of Axonopus aureus under rest periods in Roraima´s Savannas
DOI:
https://doi.org/10.33448/rsd-v10i9.18536Keywords:
Dry matter; Leaves; Morphogenesis.Abstract
The natural regrowth of Axonopus aureus in native pasture of Roraima´s savannas was evaluate, during early rainy period. The experimental design was a completely randomized, with four replications. The treatments consisted of four pasture rest periods (14, 28, 42 and 56 days after beginning of the rainy period). Evaluations were carry out during the period of June to August of 2016. The parameters measured were dry matter (DM) yields and grass morphogenetic and structural characteristics. The green and total DM, number of tillers plant-1, number of axillary tillers plant-1, number of live tillers plant-1, number of live leaves tiller-1 and leaf area index were directly proportional to rest periods. The leaf appearance and elongation rate were negatively affect by rest periods, while the dead DM was not affect by rest periods. Considering the low green DM availability of A. aureus, its recommends the utilization of some management practice, preferentially grazing or mowing, to remove the dead DM with low nutrition value and permit a grass vigorous regrowth in the beginning of the rainy period.
References
Braga, R. M. (1988). A agropecuária em Roraima: considerações históricas, de produção e geração de conhecimento. Boa Vista: Embrapa Roraima. 63p. (Embrapa Roraima. Documentos, 1).
Carrèrre, P., Louault, F., & Soussana, J.F. (1997). Tissue turnover within grass-clover mixed swards grazed by sheep: methodology for calculating growth, senescence and intake fluxes. Journal of Applied Ecology, 34, p.333-348. https://doi.org/10.2307/2404880
Costa, N. L., Mattos, P. S. R., & Bendahan, A. B. (2008). Morfogênese de duas gramíneas forrageiras nativas dos lavrados de Roraima. Pubvet, 2, (43), Art#410.
Costa, N. L. (2014). Formação, manejo e recuperação de pastagens em Rondônia: Embrapa Rondônia. 217p.
Costa, N. L., Moraes, A., Monteiro, A. L. G., Motta, A. C. V., Oliveira, R. A., & Rodrigues, A. N. A. (2013). Forage productivity and morphogenesis of Axonopus aureus under different nitrogen fertilization rates. Revista Brasileira de Zootecnia, 42, 541-548. https://doi.org/10.1590/S1516-35982013000800002
Costa, N. L., Jank, L., Magalhães, J. A., Bendahan, A. B., Rodrigues, B. H. N., & Santos, F. J. S. (2021). Forage productivity and chemical composition of Panicum maximum cv. Mombaça under defoliations intensities and frequencies. Research, Society and Development, 10, (8), p. e42910817494. https://doi.org/10.33448/rsd-v10i8.17494.
Cruz, N. T., Pires, A. J. V., Fries, D. D., Jardim R. R., & Sousa B. M. L. (2021). Fatores que afetam as características morfogênicas e estruturais de plantas forrageiras. Research, Society and Development, 10 (7), e5410716180. https://dx.doi.org/10.33448/rsd-v10i7.16180
Gianluppi, D., Gianluppi, V., & Smiderle, O. (2001). Produção de pastagens no cerrado de Roraima. Boa Vista: Embrapa Roraima, 4p. (Embrapa Roraima. Comunicado Técnico, 14)
Heringer, E., & Jacques, A. V. A. (2002). Acumulação de forragem e material morto em pastagem nativa sob distintas alternativas de manejo em relação às queimadas. Revista Brasileira de Zootecnia, 31 (3), p.599-604. https://doi.org/10.1590/S1516-35982002000300009
Lemaire, G., & Agnusdei, M. (2000). Leaf tissue turnover and efficiency of herbage utilization. In: Lemaire, G., Hodgson, J. & Moraes, A. (Eds). Grassland ecophysiology and grazing ecology. London: CAB International. p.265-288.
Lemaire, G., Hodgson, J., & Chabbi, A. (2011). Grassland productivity and ecosystem services. Cabi, Wallingford. 287p.
Martuscello, J. A., Rios, J. F., Ferreira, M. R., Assis, J. A., Braz, T. G. S., & Cunha, D. N. F. (2019). Produção e morfogênese de capim BRS Tamani sob diferentes doses de nitrogênio e intensidades de desfolhação. Boletim de Indústria Animal, 76, 1-10. https://doi.org/10.17523/bia.2019.v76.e1441
Mochiutti, S., Meirelles, P. R. L., & Souza Filho, A. P. (2009). Efeito da frequência e época de roçada sobre a produção e rendimentos das espécies de pastagem nativa de cerrado do Amapá. In: Reunião da Sociedade Brasileira de Zootecnia, 36., 2009, Porto Alegre. Anais. Porto Alegre: SBZ, 3p. (CD-ROM).
Nabinger, C., & Pontes, L. S. (2002). Manejo da desfolha. Simpósio sobre manejo da pastagem. FEALQ, Jaboticabal. p.133-158.
Nabinger, C., & Carvalho, P. C. F. (2009). Ecofisiología de sistemas pastoriles: aplicaciones para su sustentabilidad. Agrociencia, 13, 18-27.
Pereira, V. V. (2013). A importância das características morfogênicas sobre o fluxo de tecidos no manejo de pastagens tropicais. Revista em Agronegócios e Meio Ambiente, 6, 289-309.
Pereira, A. S., Shitsuka, D. M., Pereira, F. J., & Shitsuka, R. (2018). Metodologia da pesquisa
científica. [e-book]. Santa Maria. UAB/NTE/UFSM. https://repositorio.ufsm.br/bitstream/handle/1/15824/Lic_Computação Metodologia PesquisaCientifica.pdf?sequence=1.
Sarmiento, G., Silva, M. P., Naranjo, M. E., & Pinillos, M. (2006). Nitrogen and phosphorus as limiting factors for growth and primary production in a flooded savanna in the Venezuelan Llanos. Journal of Tropical Ecology, 22 (3), 203-212. https://doi.org/10.1017/S0266467405003068
Silveira, R. K. (2020). Manejo ecofisiológico das gramíneas Megathyrsus maximus (Panicum maximum) cv. Tanzânia, Mombaça e Massai. Veterinária e Zootecnia, 27 (1), 1-13. https://doi.org/10.35172/rvz.2020.v27.421
Souza, J. A. S. (2018). Produção de gramíneas forrageiras dos gêneros Urochloa e Megathyrsus nas condições edafoclimáticas de Manaus, AM. 58 f. Dissertação. (Mestrado em Agronomia Tropical). Universidade Federal do Amazonas.
Tesk, C. R. M., Cavalli, J., Pina, D. S., Pereira, D. H., Pedreira, C. G. S., Jank, L., Sollenberger, L. E., & Pedreira, B. C. (2020). Herbage responses of Tamani and Quênia guineagrasses to grazing intensity. Agronomy Journal, 201, 1-27. https://doi.org/10.1002/agj2.20189
Downloads
Published
How to Cite
Issue
Section
License
Copyright (c) 2021 Newton de Lucena Costa; Antônio Neri Azevedo Rodrigues
This work is licensed under a Creative Commons Attribution 4.0 International License.
Authors who publish with this journal agree to the following terms:
1) Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
2) Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
3) Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work.
