EVOLUTION OF THE PHYSICAL PROPERTIES OF SOILS SUBMITTED TO THE MANAGEMENT OF THE “BARREIRÃO SYSTEM”

Authors

  • Roberto Toledo de Magalhães
  • Huberto José Kliemann
  • Itamar Pereira de Oliveira

Keywords:

Tropical pastures, Brachiaria, soil compaction, cerrado soils

Abstract

The historical evolution of the physical properties of a dystrophic oxisol (Goiás, Brazil) was evaluated in a pasture area derived from an original Cerrado opening. This pasture was established by applying 1.5 t ha-1 of calcitic lime and direct sowing of Brachiaria decumbens. After ten years, this pasture was reformed by Barreirão System. In a single operation, the rice sowing was realized at 3-5 cm depth together Brachiaria brizantha mixtured in the fertilizers at 8-10 cm depth, respectively. The evolution of the physical properties was monitored in renovated 1-6 years areas where the system was implanted, using as reference an area of native forest and another 17 years old traditional pasture. According to the obtained data, it was permitted to conclude that there is an inverse relationship among the production of green matter and medium resistance to penetration of the impact penetrometer at drought period, in 8-16 cm depth layer, with a critical level of 2.22 MPa.

KEY-WORDS: Tropical pastures; Brachiaria; soil compaction; cerrado soils.

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Author Biography

Roberto Toledo de Magalhães

Departamento de Zootecnia da Universidade Católica de Goiás.

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Published

2007-11-28

How to Cite

MAGALHÃES, R. T. de; KLIEMANN, H. J.; OLIVEIRA, I. P. de. EVOLUTION OF THE PHYSICAL PROPERTIES OF SOILS SUBMITTED TO THE MANAGEMENT OF THE “BARREIRÃO SYSTEM”. Pesquisa Agropecuária Tropical [Agricultural Research in the Tropics], Goiânia, v. 31, n. 1, p. 15–21, 2007. Disponível em: https://revistas.ufg.br/pat/article/view/2509. Acesso em: 22 nov. 2024.

Issue

v. 31, n. 1, Jan./Jun. 2001

Section

Research Article

License

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