Biomass components and structure of massai grass fertilized with nitrogen and grazed by sheep-Reference-Cited by-同舟云学术

Biomass components and structure of massai grass fertilized with nitrogen and grazed by sheep

Published:2019-08 Issue:4 Volume:71 Page:1411-1420
ISSN:1678-4162
Container-title:Arquivo Brasileiro de Medicina Veterinária e Zootecnia
language:
Short-container-title:Arq. Bras. Med. Vet. Zootec.

Author:

Lopes M.N.¹^ORCID,Cândido M.J.D.¹^ORCID,Pompeu R.C.F.F.²^ORCID,Silva R.G.³^ORCID,Carneiro M.S.S.¹^ORCID,Morais Neto L.B.¹^ORCID,Peixoto M.J.A.⁴^ORCID,Carvalho T.C.F.⁵^ORCID

Affiliation:

1. Universidade Federal do Ceará, Brazil

2. Embrapa Caprinos e Ovinos, Brazil

3. Instituto Federal de Educação, Ciência e Tecnologia do Ceará, Brazil

4. Secretaria do Desenvolvimento Agrário do Ceará, Brazil

5. Universidade Estadual do Ceará, Brazil

Abstract

ABSTRACT To evaluate the biomass components of massai grass subjected to nitrogen (N) fertilization levels (control - 0; 400; 800 and 1200 kg ha-1 year-1 of N) and under rotational stocking with sheep, this study was undertaken using a completely randomized design with measurements repeated in time. A quadratic response was observed reaching maximum values as the levels of nitrogen fertilization increased for green forage biomass, green leaf biomass, green stem biomass (5,172.9; 4,146.3; 1,033.9 kg ha-1 cycle-1, respectively), forage total density (179.1 kg ha-1 cm-1), canopy height (36.8 cm) and live material/dead material ratio (4.0) at levels 896; 934; 797; 879.2; 751.4 and 1,161 kg ha-1 year-1 of N, respectively. For all variables, oscillation was observed between the grazing cycles studied. Nitrogen fertilization has a positive response on the biomass components and canopy structure of massai grass.

Publisher

FapUNIFESP (SciELO)

Subject

General Veterinary

Link

http://www.scielo.br/pdf/abmvz/v71n4/0102-0935-abmvz-71-04-1411.pdf

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