Data/hora: 09/06/2024 11:21:47

Biblioteca(s): | Embrapa Agricultura Digital.
Tipo da produção científica: | Artigo em Anais de Congresso
Data corrente: | 20/10/2011
Data da última atualização: | 03/03/2023
Autoria: | MARIN, F. R.; ANGELOCCI, L. R.
Afiliação: | FÁBIO RICARDO MARIN, CNPTIA; LUIZ R. ANGELOCCI, ESALQ/USP.
Título: | Irrigation requirements and transpiration coupling to the atmosphere of a citrus orchard.
Ano de publicação: | 2011
Fonte/Imprenta: | In: CONGRESSO BRASILEIRO DE AGROMETEOROLOGIA, 17., 2011, Guarapari. Riscos climáticos e cenários agrícolas futuros: anais. Guarapari: Incaper, 2011.
Descrição Física: | 1 CD-ROM.
Idioma: | Inglês
Notas: | CBA 2011.
Conteúdo: | Crop evapotranspiration (ETc) was measured as evaporative heat flux from an irrigated acid lime orchard (Citrus latifolia Tanaka) using the aerodynamic method. Crop transpiration (T) was determined by a stem heat balance method. The irrigation requirements were determined by comparing the orchard evapotranspiration (ETc) and T with the reference evapotranspiration (ETo) derived from the Penman-Monteith equation, and the irrigation requirements were expressed as ETc/ETo (Kc) and T/ETo (Kcb) ratios. The influence of inter-row vegetation on the ETc was analyzed because the measurements were taken during the summer and winter, which are periods with different regional soil water content. In this study, the average Kc values obtained were 0.65 and 0.24 for the summer and winter, respectively. The strong coupling of citrus trees to the atmosphere and the strong coupling of the sensitivity of citrus plants to large vapor pressure deficits and air/leaf temperatures caused variations in the Kcb in relation to the ETo ranges. During the summer, the Kcb value ranged from 0.34 when the ETo exceeded 5 mm d-1 to 0.46 when the ETo was less than 3 mm d-1.
Palavras-Chave: | Condutância estomática; Micrometeorologia; Pomares cítricos.
Thesagro: | Irrigação; Irrigação por Aspersão.
Thesaurus Nal: | Citrus latifolia; Irrigation; Leaf conductance; Meteorology; Orchards; Sprinkler irrigation.
Categoria do assunto: | X Pesquisa, Tecnologia e Engenharia
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/43948/1/cba07-285-362.pdf
Registro original: | Embrapa Agricultura Digital (CNPTIA)
Exemplares: | CNPTIA - (15998-1) - UPC - AA - DD -  -  - 2011.00006 - DIS