Production of dry mass and regrowth vigor of Brachiaria brizantha cv. Marandu assigned to differents nitrogen levels and frequencies harvest

Authors

  • Emerson Alexandrino Universidade Federal de Viçosa, Departamento de Zootecnia, Viçosa, MG
  • Domicio do Nascimento Júnior Universidade Federal de Viçosa, Departamento de Zootecnia, Viçosa, MG
  • Adair José Regazzi Universidade Federal de Viçosa, Departamento de Informática, Viçosa, MG
  • Paulo Roberto Mosquin Universidade Federal de Viçosa, Departamento de Biologia, Viçosa, MG
  • Fernanda Cipriano Rocha Universidade Federal de Viçosa, Departamento de Zootecnia, Viçosa, MG
  • Daniel de Paula Sousa Universidade Federal de Viçosa, Departamento de Zootecnia, Viçosa, MG

DOI:

https://doi.org/10.1590/S1413-95962003000800008

Keywords:

Harvest frequency, Nitrogen, Regrowth vigor

Abstract

The experiment was disposed in a randomized blocks design, in a factorial scheme, with the objective to evaluate of effect of the nitrogen levels (0, 45, 90, 180 and 360 mg dm-3 of nitrogen - N) and frequencies of harvests (14 and 28 days) under the production of total dry mass and the regrowth vigor of Brachiaria brizantha cv. Marandu, in pots, in a greenhouse, with three repetitions by treatment. All of the variations sources (nitrogen levels, frequencies of harvests and the interactions between them) had effect statistically significative, positive and negative under the production of total dry mass, respectively, for the N levels and the frequencies of harvest. In the study of the regrowth vigor (production harvest-1), the interaction of the harvests and the nitrogen levels were not significative (P<0,01) by the Wilks test. The effect off the nitrogen levels inside of each harvest as much as frequents defoliations, how for less frequents defoliations, provided increment in regrowth vigor with the increase in the supply of N.

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Published

2003-01-01

Issue

Section

UNDEFINIED

How to Cite

1.
Alexandrino E, Nascimento Júnior D do, Regazzi AJ, Mosquin PR, Rocha FC, Sousa D de P. Production of dry mass and regrowth vigor of Brachiaria brizantha cv. Marandu assigned to differents nitrogen levels and frequencies harvest. Braz. J. Vet. Res. Anim. Sci. [Internet]. 2003 Jan. 1 [cited 2024 Jul. 17];40(supl.):141-7. Available from: https://www.revistas.usp.br/bjvras/article/view/11437