Forage yield, chemical composition and morphogenesis of Megathyrsus maximus cv. Mombaça under rest periods

Authors

  • Newton Costa Embrapa Roraima
  • Liana Jank Pesquisador da Embrapa
  • João Avelar Magalhães Pesquisador da Embrapa
  • Vicente Gianluppi Pesquisador da Embrapa
  • Fabíola Helena dos Santos Fogaça Pesquisador da Embrapa
  • Amaury Burlamaqui Bendahan Pesquisador da Embrapa
  • Francisco José de Seixas Santos Pesquisador da Embrapa

DOI:

https://doi.org/10.22256/PUBVET.V11N11.1169-1174

Keywords:

chemical composition, dry matter, leaves, tillering, senescence

Abstract

The effects of rest periods (14, 21, 28, 35, 42 and 49 days) on green dry matter (GDM) yield, chemical composition and morphogenetic and structural characteristics of Megathyrsus maximus cv. Mombaça were evaluated under natural field conditions. GDM yields and regrowth increased consistently with highest rest periods. The leaf appearance and leaf expansion rates are inversely proportional to the rest periods, occurring the inverse for average leaf length, leaf area index and foliar senescence rate. Maximum GDM yields, regrowth yields, number of leaves tiller-1, average leaf length and leaf area index were obtained with rest periods at 36.4; 39.2; 40.8; 39.6 and 41.3 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

2017-09-11

Issue

Section

Pastagem e forragicultura

How to Cite

Forage yield, chemical composition and morphogenesis of Megathyrsus maximus cv. Mombaça under rest periods. (2017). Pubvet, 11(11). https://doi.org/10.22256/PUBVET.V11N11.1169-1174

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