Please use this identifier to cite or link to this item:
|Research center of Embrapa/Collection:||Embrapa Acre - Artigo em periódico indexado (ALICE)|
|Type of Material:||Artigo em periódico indexado (ALICE)|
|Authors:||RIGHI, C. A.|
BERNARDES, M. S.
LUNZ, A. M. P.
PEREIRA, C. R.
DOURADO NETO, D.
FAVARIN, J. L.
|Additional Information:||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.|
|Title:||Measurement and simulation of solar radiation availability in relation to the growth of coffe plants in an agroforestry system with rubber trees.|
|Publisher:||Revista Árvore, Viçosa, v. 31, n. 2, p. 195-207, 2007.|
|Keywords:||Sistema Agroflorestal (SAF)|
Coffea arabica cv Obatã
Desempeño del crecimiento
|Description:||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.|
Consorciação de cultura
Fator de crescimento
|Appears in Collections:||Artigo em periódico indexado (CPAF-AC)|