Forage yield and morphogenesis of Brachiaria brizantha cv. Marandu under different rest periods

Authors

  • Newton de Lucena Costa Embrapa Roraima
  • Claudio Ramalho Townsend
  • Fabíola Helena dos Santos Fogaça
  • João Avelar Magalhães
  • Francisco José de Seixas Santos
  • Braz Henrique Nunes Rodrigues

DOI:

https://doi.org/10.22256/pubvet.v10n4.307-311

Keywords:

chemical composition, dry matter, leaves, tillering, senescence

Abstract

The effects of rest periods (21, 28, 35, 42 and 49 days) on green dry matter (GDM) yield, chemical composition and morphogenetic and structural characteristics of Brachiaria brizantha cv. Marandu were evaluated under natural field conditions. GDM yields and regrowth, medium blade length, leaf elongation and leaf senescence rate increased consistently with rest period, however the nitrogen, phosphorus, and magnesium contents and leaf appearance rate decreased, while calcium and potassium contents were not affected by rest period. Maximum GDM yields, number of leaves/tiller, leaf elongation rate and leaf area index were obtained with rest periods at 38.8; 38.7; 27.4 and 47.8 days. These data suggest that grass grazing at 35 to 42 days of rest period were optimal for obtain maximum yields and regrowth of rich forage.

Published

2016-03-02

Issue

Section

Pastagem e forragicultura

How to Cite

Forage yield and morphogenesis of Brachiaria brizantha cv. Marandu under different rest periods. (2016). Pubvet, 10(04). https://doi.org/10.22256/pubvet.v10n4.307-311

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