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Grazing Management Targets for Tangolagrass Pastures

Author

Listed:
  • Nemora Guliane Mocelin

    (Animal Production and Food Science Department, Santa Catarina State University, Avenida Luiz de Camões, 2090, Lages 88520-000, Brazil)

  • Daniel Schmitt

    (Animal Production and Food Science Department, Santa Catarina State University, Avenida Luiz de Camões, 2090, Lages 88520-000, Brazil)

  • Guilherme Doneda Zanini

    (Agronomy Department, “Barriga Verde” University, Rua Pe João Leonir Dall’Alba, 601, Orleans 88870-000, Brazil)

  • Pedro Antonio Garzón Camacho

    (Animal Production and Food Science Department, Santa Catarina State University, Avenida Luiz de Camões, 2090, Lages 88520-000, Brazil)

  • André Fischer Sbrissia

    (Animal Production and Food Science Department, Santa Catarina State University, Avenida Luiz de Camões, 2090, Lages 88520-000, Brazil)

Abstract

Tangolagrass ( Brachiaria arrecta × Brachiaria mutica ) is a stoloniferous warm-season grass considered as an alternative to forming permanent grasslands in waterlogged tropical regions. However, information about grazing management targets for such species is still scarce. This two-year study aimed to identify pre-grazing canopy heights that do not compromise both leaf lamina production and nutritive value of tangolagrass pastures, and to test whether lower canopy height could decrease stolon elongation process. To this end, three pre-grazing canopy heights (20, 30, or 40 cm, all lowered in 40% of their initial heights) were assigned to nine 390-m 2 plots grazed by cattle. Herbage, leaf, and stem accumulation rates were not different among treatments (57, 23, and 27 kg DM ha −1 d −1 , respectively; p > 0.05). Also, neutral detergent fiber (NDF) and acid detergent fiber (ADF) were similar among treatments (56 and 24% DM, respectively; p > 0.05), but crude protein (CP) was greater ( p = 0.0180) in pastures managed with 30 cm (24.7% DM × 22.5% DM). Thus, pre-grazing canopy heights between 20–40 cm combined with low levels of defoliation (up to 40% of the initial height) provide the same primary productivity in tangolagrass pastures. However, stolon elongation could not be reduced within such canopy height targets.

Suggested Citation

  • Nemora Guliane Mocelin & Daniel Schmitt & Guilherme Doneda Zanini & Pedro Antonio Garzón Camacho & André Fischer Sbrissia, 2022. "Grazing Management Targets for Tangolagrass Pastures," Agriculture, MDPI, vol. 12(2), pages 1-9, February.
    • Handle: RePEc:gam:jagris:v:12:y:2022:i:2:p:279-:d:750371
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    References listed on IDEAS

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    1. Sila Carneiro Da Silva & André Fischer Sbrissia & Lilian Elgalise Techio Pereira, 2015. "Ecophysiology of C 4 Forage Grasses—Understanding Plant Growth for Optimising Their Use and Management," Agriculture, MDPI, vol. 5(3), pages 1-28, July.
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