Abstract
Abstract Data from field experiments conducted in table grape vineyards variety of Festival in Petrolina-PE in the period from September 19 to October 12, 2010 were used to evaluate the influence of plastic cover on microclimate conditions of vineyards in São Francisco River Valley region. Three treatments were studied: canopies without plastic cover (WC); with plastic cover positioned at 50 cm (PC50), and at 100 cm (PC100) above canopy. The results indicate that the plastic cover prevented the passage of about 40% of the global and net radiation, retained the relative humidity inside the canopy, generated an increase of air temperature and marked reduction in wind speed over the canopy of treatment PC50. However, treatment PC100 had a higher incidence of short wavelength and net radiation under canopy (on the berries) than WC and PC50 treatments, resulting in more favorable weather conditions, providing about 40% greater productivity in this treatment. Therefore, the vineyard with plastic cover placed at 100 cm above canopy represents a more suitable alternative to the climatic conditions of the region of the São Francisco River Valley.
Highlights
The protected grape growing is a worldwide practice, mainly developed in the European countries of the Mediterranean region (FAO, 2002; Rana et al, 2004)
This study aimed to evaluate the effects of plastic covering on the microclimate of vineyards conditions in the São Francisco Valley region, based on the analysis of the solar radiation, air temperature and relative humidity and wind speed behavior
The following treatments were studied: uncovered canopy (WC); plastic cover positioned at 50 cm above the canopy (PC50); and plastic cover positioned at 100 cm above the canopy (PC100)
Summary
The protected grape growing is a worldwide practice, mainly developed in the European countries of the Mediterranean region (FAO, 2002; Rana et al, 2004). In Italy, as in other countries, the plastic cover is used for inducing improvement of the thermos-hygrometric conditions when the atmosphere has to be unfavorable to the growth and development of the plants, the adverse weather conditions of wind and rain (Gambino et al, 2008). In Brazil, the plastic cover of vineyards was first introduced in the Rio Grande do Sul, dominated by cold climate with rainfall and strong winds and hail at the time of grape maturation, conditions that cause cracks and installation diseases (Chavarria and Santos, 2009). According with information of the Agricultural Cooperative of Juazeiro - BA (ACJ), the use of the plastic cover in the Sao Francisco River Valley region has been taking place since 2000, to protect the vineyards of rain and prevent the occurrence of cracks berries throughout the period of grape maturation and harvesting. According with information of the Agricultural Cooperative of Juazeiro - BA (ACJ), the use of the plastic cover in the Sao Francisco River Valley region has been taking place since 2000, to protect the vineyards of rain and prevent the occurrence of cracks berries throughout the period of grape maturation and harvesting. Chavarria et al (2007) state that compared to the unprotected cultivation, the plastic cover provides a differentiation in the microclimate of the vineyards
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
