Microclimate in coffee plantation grown under grevillea trees shading - doi: 10.4025/actasciagron.v33i2.7065

• Autor(a) principal: Pezzopane, José Ricardo Macedo
• Data de Publicação: 2011
• Outros Autores: Souza, Paulo Sérgio de, Rolim, Glauco de Souza, Gallo, Paulo Boller
• Tipo de documento: Artigo
• Idioma: por; eng
• Título da fonte: Acta Scientiarum. Agronomy (Online)
• Texto Completo: http://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/7065
• topic: shading system; Coffea Arabica; solar radiation; microclimate; shading system; Coffea Arabica; solar radiation; microclimate; Agrometeorologia

Measurements of solar global radiation, wind speed, temperature and relative humidity of air were made in a coffee plantation (Coffea Arabica L. variety Icatu Vermelho- IAC 4045), grown under conditions of shading levels caused by grevillea trees (Grevillea robusta) in Mococa-SP region (21° 28’ S, 47° 01’ W, altitude 665m), between January and December 2005, aiming to show the effects of shading crop system on the microclimate. The results showed that there was a reduction of about 26% of solar global radiation in the shaded systems, with a monthly variation of 24-30%. It has been highlighted some differences in the transmittance of global radiation in the shaded coffee trees due to the spatial variation of grevillea canopy. There was a reduction of about 35% in the five days-averaged wind speed in the shaded system that also presented reduced maximum air temperature and a reduction in the vapor pressure deficit during day-light period, especially in the point sampled near to the grevillea trees.