Forage yield, structural characteristics and nitrogen use efficiency in tropical forages under nitrogen fertilizer

Authors

  • Deise Dalazen Castagnara Universidade Estadual do Oeste do Paraná
  • Tiago Zoz Universidade Estadual do Oeste do Paraná
  • Alexandre Krutzmann Universidade Estadual do Oeste do Paraná
  • Aline Uhlein Universidade Estadual do Oeste do Paraná
  • Eduardo Eustáquio Mesquita Universidade Estadual do Oeste do Paraná
  • Marcela Abbado Neres Universidade Estadual do Oeste do Paraná
  • Paulo Sergio Rabello de Oliveira Universidade Estadual do Oeste do Paraná

DOI:

https://doi.org/10.5433/1679-0359.2011v32n4p1637

Keywords:

Brachiaria, Panicum, Accumulation rate.

Abstract

This study aimed to evaluate the effects of increasing doses of nitrogen on the morphogenesis, structural and productive grass Panicum maximum cvs. Mombaca and Tanzania, and Brachiaria sp. Mulato. The experiment was conducted under field conditions. The experimental design was randomized blocks in a 3x4 factorial design with three forages (Panicum maximum cvs. Tanzania and Mombaca and Brachiaria sp. cv. Mulato), four N rates (0, 40, 80 and 160 kg ha-1) with three replications. Were evaluated the following parameters: fresh matter production (FMP), dry matter production (DMP), plant height, percentage of dry matter, leaves per tiller, dry matter accumulation rate (DMAR) and nitrogen use efficiency (NUE). Grasses Mombasa and Tanzania showed similar results, and both were superior to Mulato grass for the production of fresh and dry matter. The three species responded to nitrogen application, with an increase in FMP, DMP, DMAR, height and number of tillers. The maximum efficiency in use of N was obtained with a dose of 120 kg ha-1.

Author Biographies

Deise Dalazen Castagnara, Universidade Estadual do Oeste do Paraná

Doutoranda em Agronomia, Universidade Estadual do Oeste do Paraná, UNIOESTE, Marechal Cândido Rondon, PR.

Tiago Zoz, Universidade Estadual do Oeste do Paraná

Mestrando em Agronomia, Universidade Estadual Paulista, Faculdade de Ciências Agronômicas, Deptº de Produção Vegetal, Botucatu, SP.

Alexandre Krutzmann, Universidade Estadual do Oeste do Paraná

Mestrando em Zootecnia, Universidade Estadual de Maringá, UEM. Maringá, PR.

Aline Uhlein, Universidade Estadual do Oeste do Paraná

Graduando em Agronomia, UNIOESTE, Marechal Cândido Rondon, PR.

Eduardo Eustáquio Mesquita, Universidade Estadual do Oeste do Paraná

Prof. Dr. da UNIOESTE, Marechal Cândido Rondon, PR.

Marcela Abbado Neres, Universidade Estadual do Oeste do Paraná

Profª Drª da UNIOESTE, Marechal Cândido Rondon, PR.

Paulo Sergio Rabello de Oliveira, Universidade Estadual do Oeste do Paraná

Prof. Dr. da UNIOESTE, Marechal Cândido Rondon, PR.

Published

2011-10-17

How to Cite

Castagnara, D. D., Zoz, T., Krutzmann, A., Uhlein, A., Mesquita, E. E., Neres, M. A., & Oliveira, P. S. R. de. (2011). Forage yield, structural characteristics and nitrogen use efficiency in tropical forages under nitrogen fertilizer. Semina: Ciências Agrárias, 32(4), 1637–1648. https://doi.org/10.5433/1679-0359.2011v32n4p1637

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