BEHAVIOR OF THE ROOT SYSTEM OF THE GRAZE MANAGED GRASSES UNDER DIFFERENT IRRIGATION DEPTHS

Authors

  • Carlos Augusto Brasilero Alencar
  • Rubens Alves de Oliveira
  • Antônio Carlos Cóser
  • Carlos Eugênio Martins
  • Fernando França da Cunha

DOI:

https://doi.org/10.13083/reveng.v18i5.253

Keywords:

B. brizantha, C. nlemfuensis, P. maximum, P. purpureum, profundidade efetiva, densidade de raiz.

Abstract

This study was done to evaluate the root density and root depth of six pasture grasses irrigated with different water depths. The experiment was conducted in a completely randomized split plot design, with two replications. The grasses (Xaraes, Mombaça, Tanzania, Pioneiro, Marandu and Estrela) constituted the plots and water depths (0, 45 and 100% of the reference) the split-plots. Irrigation was done with the use of a line source sprinkler system. The root density was evaluated by the calculating the mean density of all samples and the effective root depth was represented by the depth where 80% of the root weight was concentrated. In non-irrigated plots root density did not differ among grasses, but Xaraes and Marandu had higher root density irrigated to 45 or 100% of the reference. Increasing water depth increased root density of only Xaraes and Marandu. The effect of water depth on effective root depth did not differ among grasses, although the mean values of Marandu was higher.

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How to Cite

Alencar, C. A. B., Oliveira, R. A. de, Cóser, A. C., Martins, C. E., & Cunha, F. F. da. (2010). BEHAVIOR OF THE ROOT SYSTEM OF THE GRAZE MANAGED GRASSES UNDER DIFFERENT IRRIGATION DEPTHS. Engineering in Agriculture, 18(5), 429–437. https://doi.org/10.13083/reveng.v18i5.253

Issue

Vol. 18 No. 5 (2010)

Section

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