TY  - JA
AU  - Pedreira,C.G.S.
AU  - Silva,V.J.da
AU  - Guimaraes,M.S.
AU  - Pequeno,D.N.L.
AU  - Tonato,F.
TI  - Fixed versus variable rest period effects on herbage accumulation and canopy structure of grazed 'Tifton 85' and 'Jiggs' Bermuda grass
PY  - 2018///
CY  - Brasilia : 
PB  - Embrapa, 
KW  - AGROVOC
KW  - Cynodon
KW  - Grazing intensity
KW  - Grassland management
KW  - Regrowth
KW  - Canopy
N1  - Peer review; Open Access
N2  - The objective of this work was to evaluate the effects of variable and fixed rest periods on the forage production, plant-part composition, and canopy structural characteristics of 'Tifton 85' and 'Jiggs' Bermuda grass (Cynodon spp.) pastures under rotational stocking. The treatments were two grass cultivars (Jiggs and Tifton 85) and two rest periods (grazing starting whenever the canopy reached 25 cm or every 28 days, regardless of canopy height). A completely randomized experimental design, with a 2×2 factorial arrangement (two grass cultivars and two managements), was used with three replicates. The experiment was carried out during the summer growing season in Piracicaba, SP, Brazil. Pre- and post-grazing forage mass chacteristics were evaluated. 'Jiggs' and 'Tifton 85' canopies had similar light interception (96.8%) at pre-grazing, for fixed and variable rest periods; however, they showed different canopy structural characteristics. 'Jiggs' had greater stem proportion, greater canopy height during pre-grazing, and lower leaf area index. There were no differences between strategies and between grass cultivars for total yield, which averaged 16.8 Mg DM ha-1. Fixed and variable rest periods can be used for 'Tifton 85' and 'Jiggs' Bermuda grass
UR  - https://hdl.handle.net/10883/19487
DO  - https://doi.org/10.1590/s0100-204x2018000100013
T2  - Pesquisa Agropecuaria Brasileira
ER  -