| Título: |
Microclimate in coffee plantation grown under grevillea trees shading - doi: 10.4025/actasciagron.v33i2.7065 Microclimate in coffee plantation grown under grevillea trees shading - doi: 10.4025/actasciagron.v33i2.7065 |
| Autores: |
Pezzopane, José Ricardo Macedo; Universidade Federal do Espirito Santo Souza, Paulo Sérgio de; Escola Agrotécnica Federal de Muzambinho Rolim, Glauco de Souza; Instituto Agronomico de Campinas Gallo, Paulo Boller; Pólo APTA Nordeste Paulista |
| Fecha: | 2011-04-11 |
| Publicador: | Acta Scientiarum. Agronomy |
| Fuente: |
 |
| Tipo: |
Pesquisa Empírica de Campo |
| Tema: |
Ciências Agrárias; Agronomia; Agrometeorologia shading system; Coffea Arabica; solar radiation; microclimate Agrometeorologia shading system; Coffea Arabica; solar radiation; microclimate |
| Descripción: |
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. 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. |
| Idioma: | Inglés |