Data/hora: 17/06/2024 02:21:31

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