Growth characteristics and dry matter production of Brachiaria brizantha (Hochst,) Stapf cv. Marandu at different nitrogen levels and clipping frequencies

Authors

  • Ana Cláudia Ruggieri Instituto de Zootecnia, Nova Odessa, Sp
  • Vanildo Favoretto Universidade Estadual Paulista, Faculdade de Ciências Agronômicas, Jaboticabal, SP
  • Euclides Braga Malheiros Universidade Estadual Paulista, Faculdade de Ciências Agronômicas, Jaboticabal, SP

Keywords:

Brachiaria brizantha, growth, nitrogen levels, dry matter production

Abstract

This work was carried out with the aim of studying the effects of three nitrogen levels (0; 33 and 66 kg/ha), three growth periods (12/23/87 until 02/17/88, 01/27 until 03/24/88 and 03/03 until 04/24/88) and four clipping frequencies (14, 28, 42 and 56 days) on the leaf area index, relative growth caracteristics, tiller density, dry matter production and leaf percentage and production of Brachiaria brizantha (Hochst) Stapf cv. Marandu. Data were analysed according to a split-splitplot design, with two replications. In the plots it was studied the N levels; the growth periods in the sub-plots, and the clipping frequencies in the sub-subplots. Mean values, except for leaf percentage, showed that the characteristics evaluated were not effected (P>0.05) by nitrogen levels. Increasing cuting intervals decreased (P<0.05) the relative growth rate that were 0.406 and 0.033 g/g/day, in the 14 and 56 days, respectively. Plants clipped in the minor frequency (14 days) showed mean leaf area index values of, 3.9 increasing up to 6.2 at the 42 days frequence. Data showed that the regrowth of Brachiaria brizantha cv. Marandu was more efficient when the plants were cut at intervals of 28 or 42 days of vegetative growth.

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Published

2014-01-14

Issue

Section

FORAGE CROPS AND PASTURES

How to Cite

Growth characteristics and dry matter production of Brachiaria brizantha (Hochst,) Stapf cv. Marandu at different nitrogen levels and clipping frequencies. (2014). Bulletin of Animal Husbandry, 51(2), 149-155. http://35.198.24.243/index.php/bia/article/view/806

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