Data/hora: 21/06/2024 05:41:09

Biblioteca(s): 	Embrapa Instrumentação.	
Data corrente: 	06/06/2003	
Data da última atualização: 	24/02/2010	
Autoria: 	BASSOI, L. H.; HOPMANS, J. W.; JORGE, L. A. de C.; ALENCAR, C. M. de; SILVA, J. A. M. e.	
Afiliação: 	Embrapa Semi-Árido, Petrolina, PE; Department of Land, Air and Water Resources, Univ. of California, Davis, USA; Embrapa Instrumentação Agropecuária, São Carlos, SP; Depto. Engenharia Rural-UNESP, Botucatu, SP.	
Título: 	Grapevine root distribution in drip and microsprinkler irrigation.	
Ano de publicação: 	2003	
Fonte/Imprenta: 	Scientia Agricola, Piracicaba, v. 60, n. 2, p. 377-387, abr./jun. 2003.	
Idioma: 	Inglês	
Conteúdo: 	Grape (Vitis vinifera L.) yield its quality are dependent to the status of the root system. Root distribution information is also valuable for soil and water management. An analysis of methods to evaluate the root distribution of grapevines for both, drip and microsprinkler irrigation in a Typic Acrustox is presented for the table grape cv. Italia grafied on the rootstock IA-313, in northeastern Brazil. Measured root parameters using the monolith method were root dry weight (Dw) and root length density (Lv), while root area (Ap) was estimated using the soil profile method in combination with digital image analysis. For both irrigation systems, roots were present to the 1 m soil depth and extended laterally to 1 m distance from the trunk, but grapevines irrigated by microsprinkler showed greater root presence as the distance from the trunk increased. Values of Ap were reasonably well correlated to Dw and Lv. However, correlation values were higher when fractional root distribution was used. The soil profile method in combination with image analysis techniques, allows proper grapevine root distribution evaluation.	
Palavras-Chave: 	Digital image; Imagem digital; Root system; Sistema de raízes; Vitis vinifera L.	
Categoria do assunto: 	--	
Registro original: 	Embrapa Instrumentação (CNPDIA)	
Exemplares: 	CNPDIA - (7550-1) - UPC - SP - -- - PROCI-03.00020 -  - 2003.00020 - DIS