Data/hora: 13/06/2024 08:01:06

Biblioteca(s): | Embrapa Florestas.
Data corrente: | 14/01/2015
Data da última atualização: | 14/01/2015
Autoria: | PONTES, L. da S.; BALDISSERA, T. C.; BARRO, R. S.; GIOSTRI, A. F.; STAFIN, G.; SANTOS, B. R. C.; PORFIRIO-DA-SILVA, V.; CARVALHO, P. C. de F.
Afiliação: | IAPAR; IAPAR / UFPR; UFRGS; IAPAR / UFPR; IAPAR; UFPR; VANDERLEY PORFIRIO DA SILVA, CNPF; UFRGS.
Título: | Interactive N supply and cutting intensity effect on canopy height at 95% light interception.
Ano de publicação: | 2014
Fonte/Imprenta: | In: GENERAL MEETING OF THE EUROPEAN GRASSLAND FEDERATION, 25., 2014, Aberystwyth, Wales. EGF at 50: the future of European grasslands: proceedings. Zurich: EGF, 2014.
Páginas: | p. 353-355.
Descrição Física: | Disponível online.
Série: | (Grassland science in Europe, v. 19).
DOI: | 20143369054
Idioma: | Inglês
Conteúdo: | The aim of this study was to evaluate the impact of pasture management practices on leaf canopy height (LCH) at 95% light interception (LI), since this is a valuable strategy of defoliation frequency. These relationships were investigated over two years with monocultures grown in a fully factorial block design crossing six C4 pasture grass species, two cutting intensities and two N levels. We found variations on LCH at 95% LI, mainly across seasons, but also between treatments. The range of these variations was species-dependent. Therefore, in order to maintain a target IL level, grassland managers should cut or graze at different heights according to the species and seasons. N fertilization and an increase in cutting height above ground level can provide a sward structure that allows lower pre-cutting/grazing height and, consequently, shorter intervals between defoliations.
Palavras-Chave: | C4 grasses; Defoliation frequency; Freqüência de desfolhação; Response to management.
Thesagro: | Gramínea; Manejo; Pastagem.
Categoria do assunto: | --
Registro original: | Embrapa Florestas (CNPF)
Exemplares: | CNPF - (53211-1) - UPC - AA - DD -  -  -  - DIS