Data/hora: 21/06/2024 09:15:55

Biblioteca(s): 	Embrapa Agricultura Digital; Embrapa Soja; Embrapa Unidades Centrais.	
Data corrente: 	05/01/2010	
Data da última atualização: 	31/10/2017	
Autoria: 	SOUZA, P. J. de O. P. de; RIBEIRO, A.; ROCHA, E. J. P. da; FARIAS, J. R. B.; LOUREIRO, R. S.; BISPO, C. C.; SAMPAIO, L.	
Afiliação: 	PAULO JORGE DE OLIVEIRA PONTE DE SOUZA, Universidade Federal Rural da Amazônia; ARISTIDES RIBEIRO, Universidade Federal de Viçosa; EDSON JOSÉ PAULINO DA ROCHA, Universidade Federal do Pará; JOSE RENATO BOUCAS FARIAS, CNPSo; RENATA SILVA LOUREIRO, Universidade Federal do Pará; CARLOS CAPELA BISPO, Universidade Fedral do Pará; LEILA SAMPAIO, Universidade Federal Rural da Amazônia.	
Título: 	Solar radiation use efficiency by soybean under field conditions in the amazon region.	
Ano de publicação: 	2009	
Fonte/Imprenta: 	Pesquisa Agropecuária Brasileira, Brasília, DF, v. 44, n. 10, p. 1211-1218, out. 2009.	
Idioma: 	Inglês	
Conteúdo: 	Abstract The objective of this work was to evaluate the ef? ciency of soybean (Glycine max) in intercepting and using solar radiation under natural ? eld conditions, in the Amazon region, Brazil. The meteorological data and the values of soybean growth and leaf area were obtained from an agrometeorological experiment carried out in Paragominas, Pará state, during 2007 and 2008. The radiation use ef? ciency (RUE) was obtained from the ratio between the above-ground biomass production and the intercepted photosynthetically active radiation (PAR) accumulated to 99 and 95 days after sowing, in 2007 and 2008, respectively. Climatic conditions during the experiment were very distinct, with reduction in rainfall in 2007, which began during the soybean mid-cycle, due to the El Niño phenomenon. An important reduction in the leaf area index and biomass production was observed during 2007. Under natural ? eld conditions in the Amazon region, the values of RUE were 1.46 and 1.99 g MJ-1 PAR in the 2007 and 2008 experiments, respectively. The probable reason for the differences found between these years might be associated to the water restriction in 2007 coupled with the higher air temperature and vapor pressure de? cit, and also to the increase in the fraction of diffuse radiation that reached the land surface in 2008. Index terms: Glycine max, Amazon region, leaf area index, radiation interception.	
Palavras-Chave: 	Amazon region; Eficiência do uso da radiação solar (ERU) pela soja; Índice de área foliar; Interceptação da radiação; Radiation interception; Região Amazônica; Soybean.	
Thesagro: 	Área foliar; Fisiologia vegetal; Glycine Max; Radiação; Radiação solar; Soja.	
Thesaurus Nal: 	Amazonia; Leaf area index; Plant physiology; Radiation use efficiency.	
Categoria do assunto: 	--
F Plantas e Produtos de Origem Vegetal	
URL: 	http://ainfo.cnptia.embrapa.br/digital/bitstream/item/79100/1/ID-30201.pdf
http://ainfo.cnptia.embrapa.br/digital/bitstream/AI-SEDE-2010/47209/1/44n10a01.pdf	
Registro original: 	Embrapa Soja (CNPSO)	
Exemplares: 	CNPTIA - (14387-1) - EMB - AP - PP -  -  -  - DIS
CNPSO - (30201-1) - UPC - AP - DD -  -  -  - DIS
AI-SEDE - (47209-1) - UPE - AP - PP - 630.72081 - P474 -  - DIS
AI-SEDE - (47209-2) - UPE - AP - PP - 630.72081 - p474 -  - DIS