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Shade effects on the hybrid Mavuno brachiariagrass (Urochloa spp.) as potential grass in agroforestry systems

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Abstract

The goal of this study was to evaluate the morphogenetic, physiology, and forage mass characteristics of Mavuno brachiariagrass (Urochloa brizantha × Urochloa ruziziensis) under shading. The experiment was analyzed as split-plot. Whole plots were two growing seasons (spring/summer and fall/winter) and the subplots were shade levels (0, 30, 45, and 73%). There is a linear positive effect of shade on leaf elongation rate, leaf blade lengths, canopy height, chlorophyll indices, leaf percentage, and leaf to stem ratio. Shade linearly decreased stem and inflorescence percentages and tillers number. There was a quadratic effect of shade on growing cycle length, forage mass, and photosynthesis. Regarding to seasons, spring/summer presented higher rates of leaf appearance, leaf elongation, and stem elongation compared to fall/winter. In conclusion, Mavuno brachiariagrass harvested at 95% LI presents great adaptation to shading of 30%, without impairing the forage mass although increasing leaf size, chlorophyll indices, and canopy height.

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Authors and Affiliations

  1. Universidade Federal de Lavras, Lavras, MG, Brazil

    Priscila Júnia Rodrigues da Cruz

  2. Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, MG, Brazil

    Claudia Eduarda Borges, Márcia Vitória Santos, Marcela Azevedo Magalhães & Leandro Diego da Silva

  3. Universidade Federal de São João Del-Rei, São João Del-Rei, MG, Brazil

    Janaína Azevedo Martuscello

  4. Universidade Federal de Viçosa, Viçosa, MG, Brazil

    Dilermando Miranda da Fonseca

Authors
  1. Priscila Júnia Rodrigues da Cruz
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  2. Claudia Eduarda Borges
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  3. Márcia Vitória Santos
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  4. Marcela Azevedo Magalhães
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  5. Janaína Azevedo Martuscello
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  6. Dilermando Miranda da Fonseca
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  7. Leandro Diego da Silva
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Correspondence to Leandro Diego da Silva.

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da Cruz, P.J.R., Borges, C.E., Santos, M.V. et al. Shade effects on the hybrid Mavuno brachiariagrass (Urochloa spp.) as potential grass in agroforestry systems. Agroforest Syst 95, 1105–1108 (2021). https://doi.org/10.1007/s10457-021-00636-4

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  • DOI: https://doi.org/10.1007/s10457-021-00636-4

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