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vol.46 número1Reproductive performance of female Nile tilapia ( Oreochromis niloticus ) fed diets with different digestible energy levelsUse of Lippia rotundifolia and Cymbopogon flexuosus essential oils, individually or in combination, in broiler diets índice de autoresíndice de assuntospesquisa de artigos
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Revista Brasileira de Zootecnia

versão On-line ISSN 1806-9290


MACHADO, Juliana Medianeira et al. Agronomic evaluation of Paspalum notatum Flügge under the influence of photoperiod. R. Bras. Zootec. [online]. 2017, vol.46, n.1, pp.8-12. ISSN 1806-9290.

The objective of this study was to evaluate the influence of photoperiod on the forage yield by ecotypes and intraspecific hybrids of P. notatum. Tetraploid ecotypes from the United States Department of Agriculture and the National University of the Northeast in Argentina, in addition to six intraspecific hybrids, totaling 19 ecotypes, were assessed. The materials evaluated were subjected to an extended photoperiod (14 h of light) and natural photoperiod from July 2011 to October 2012. The experimental design was a completely randomized factorial scheme of 19 × 2 (ecotypes × photoperiod) consisting of five replicates. The materials were influenced differentially by the variation in photoperiod, with one group showing high sensitivity, whereas another, smaller group, was insensitive to this factor. The use of materials with differentiated responses to photoperiod in different climatic regions can be an important tool to increase forage yield of Paspalum notatum.

Palavras-chave : ecotypes; forage yield; hybrids; subtropical grass.

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