Tillering dynamics of Alexandergrass pasture under nitrogen fertilization

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Abstract

This study was carried out to evaluate the effect of nitrogen fertilization on tillering dynamics of Alexandergrass (Urochloa plantaginea (Link) Hitch) grazed by beef heifers in a rotational stocking grazing method. The experiment was conducted in a completely randomized design following a repeated measure arrangement, three levels of nitrogen (Zero, 150 and 300kg ha-1) and two area repetition. The classification of tillers into categories (basal and axillary) showed a greater number of basal tillers, due to their higher appearance rate, in the absence of nitrogen fertilization. Nitrogen fertilization promoted higher axillary tiller density. The use of nitrogen promotes the renewal of axillary tillers of Alexandergrass, without compromising the stability of the tiller population.

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Bergoli, T. L., Rocha, M. G., Pötter, L., Salvador, P. R., Sichonany, M. J. O., Hundertmarck, A. P., … Dotto, L. R. (2019). Tillering dynamics of Alexandergrass pasture under nitrogen fertilization. Arquivo Brasileiro de Medicina Veterinaria e Zootecnia, 71(6), 2049–2056. https://doi.org/10.1590/1678-4162-11153

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