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Article

Effect of Season and Nitrogen Fertilization on the Agronomic Traits and Efficiency of Piatã Grass in Brazilian Savanna

1
Department of Animal Science, Federal University of Maranhão, Chapadinha, Maranhão 65500-000, Brazil
2
Department of Biotechnology and Biodiversity, Federal University of Mato Grosso, Cuiabá 78735-901, Brazil
3
Department of Animal Science, Federal University of Goiás, Goiânia 74690-900, Brazil
4
Department of Animal Science, Federal University of Paraíba, Rod. Pb-079, Areia 58397-000, Brazil
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Department of Animal Science, Federal University of Tocantins, BR-153, Km 112, s/n°, Araguaína 78250-970, Brazil
6
Department of Animal Science, Federal Institute of Education, Rondônia, Colorado do Oeste 76993-000, Brazil
*
Author to whom correspondence should be addressed.
Agriculture 2020, 10(8), 337; https://doi.org/10.3390/agriculture10080337
Received: 19 June 2020 / Revised: 24 July 2020 / Accepted: 29 July 2020 / Published: 6 August 2020
The aim of the present study was to evaluate the agronomic traits in the pre- and post-grazing and the nitrogen use efficiency of Piatã grass that was subjected to nitrogen fertilization throughout the seasons of the year. The experiment was performed in a randomized block design with four treatments (0, 150, 300, and 450 kg ha−1 N). Grazing was performed with sheep when the forage canopy reached 95% light interception up to 20 cm height of post-grazing. The pre-grazing forage mass of the Piatã grass showed a behavior (p < 0.05) linear to nitrogen fertilization, with higher and lower values in spring and winter, respectively. The post-grazing forage mass responded linearly (p < 0.05) to nitrogen fertilization, with an increase of 43.12% for the dose of 450 kg ha−1 N in relation to pastures without nitrogen fertilization. When the non-fertilized pasture was compared with the highest nitrogen dose, a reduction of 21.79% dead tissue was observed in the post-grazing forage mass. The highest nitrogen use efficiency was obtained with the dose of 450 kg ha−1 N. The forage mass production of the Piatã grass in the pre- and post-grazing conditions are positively influenced by nitrogen fertilization and the seasons of the year, with lower values in winter. View Full-Text
Keywords: Brachiaria brizantha; ecophysiological management; intermittent grazing; mass production; sheep Brachiaria brizantha; ecophysiological management; intermittent grazing; mass production; sheep
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MDPI and ACS Style

Zanine, A.; Farias, L.; Ferreira, D.; Farias, L.; Ribeiro, M.; Souza, A.; Rodrigues, R.; Santos, E.; Oliveira, J.; Sousa, L.; Negrão, F.; Pinho, R.; Nascimento, T. Effect of Season and Nitrogen Fertilization on the Agronomic Traits and Efficiency of Piatã Grass in Brazilian Savanna. Agriculture 2020, 10, 337. https://doi.org/10.3390/agriculture10080337

AMA Style

Zanine A, Farias L, Ferreira D, Farias L, Ribeiro M, Souza A, Rodrigues R, Santos E, Oliveira J, Sousa L, Negrão F, Pinho R, Nascimento T. Effect of Season and Nitrogen Fertilization on the Agronomic Traits and Efficiency of Piatã Grass in Brazilian Savanna. Agriculture. 2020; 10(8):337. https://doi.org/10.3390/agriculture10080337

Chicago/Turabian Style

Zanine, Anderson, Lorraine Farias, Daniele Ferreira, Lorran Farias, Marinaldo Ribeiro, Alexandre Souza, Rosane Rodrigues, Edson Santos, Juliana Oliveira, Luciano Sousa, Fagton Negrão, Ricardo Pinho, and Thiago Nascimento. 2020. "Effect of Season and Nitrogen Fertilization on the Agronomic Traits and Efficiency of Piatã Grass in Brazilian Savanna" Agriculture 10, no. 8: 337. https://doi.org/10.3390/agriculture10080337

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