Data/hora: 12/06/2024 07:25:15

Biblioteca(s): 	Embrapa Acre.	
Data corrente: 	10/10/2007	
Data da última atualização: 	28/07/2021	
Autoria: 	RIGHI, C. A.; BERNARDES, M. S.; LUNZ, A. M. P.; PEREIRA, C. R.; DOURADO NETO, D.; FAVARIN, J. L.	
Afiliação: 	Ciro Abbud Righi, USP-CENA; Marcos Silveira Bernardes, USP-ESALQ; AURENY MARIA PEREIRA LUNZ, CPAF-AC; Carlos Rodrigues Pereira, UFRRJ; Durval Dourado Neto, USP-ESALQ; José Laercio Favarin, USP- ESALQ.	
Título: 	Measurement and simulation of solar radiation availability in relation to the growth of coffe plants in an agroforestry system with rubber trees.	
Ano de publicação: 	2007	
Fonte/Imprenta: 	Revista Árvore, Viçosa, v. 31, n. 2, p. 195-207, 2007.	
ISSN: 	0100-6762 (impresso)	
DOI: 	10.1590/S0100-67622007000200002.	
Idioma: 	Inglês	
Conteúdo: 	Solar radiation is an important factor for plant growth, being its availability to understory crops strongly modified by trees in an Agroforestry System (AFS). Coffee trees (Coffea arabica cv. Obatã IAC 1669- 20) were planted at a 3.4 x 0.9 m spacing inside and aside rows of monocrops of 12 year-old rubber trees (Hevea spp.), in Piracicaba-SP, Brazil (22°42'30"S, 47°38'00"W - altitude: 546m). One-year-old coffee plants exposed to 25; 30; 35; 40; 45; 80; 90; 95 and 100% of the total solar radiation were evaluated according to its biophysical parameters of solar radiation interception and capture. The Goudriaan (1977) adapted by Bernardes et al. (1998) model for radiation attenuation fit well to the measured data. Coffee plants tolerate a decrease in solar radiation availability to 50% without undergoing a reduction on growth and LAI, which was approximately 2m2.m-2 under this condition. Further reductions on the availability of solar radiation caused a reduction in LAI (1.5m2.m-2), thus poor land cover and solar radiation interception, resulting in growth reduction.	
Palavras-Chave: 	Agroforestería; Coffea arabica cv Obatã; Coffee; Cultivo mixto; Desempeño del crecimiento; Hevea spp; Piracicaba (SP); Radiación solar; Rubber tree; São Paulo; Sistema Agroflorestal (SAF).	
Thesagro: 	Agrossilvicultura; Café; Caucho; Consorciação de cultura; Fator de crescimento; Radiação solar; Seringueira.	
Thesaurus Nal: 	Agroforestry; Growth performance; Mixed cropping; Solar radiation.	
Categoria do assunto: 	F Plantas e Produtos de Origem Vegetal	
URL: 	http://ainfo.cnptia.embrapa.br/digital/bitstream/item/112746/1/16288.pdf	
Registro original: 	Embrapa Acre (CPAF-AC)	
Exemplares: 	CPAF-AC - (16288-1) - UPC - AP - PP - SP 160 -  - 2007.02041 - DES
CPAF-AC - (16288-2) - UPC - AP - DD -  -  -  - DIS