Title:	Vineyard microclimate and yield under different plastic covers.
Authors:	HOLCMAN, E. SENTELHAS, P. C. CONCEIÇÃO, M. A. F. COUTO, H. T. Z.
Affiliation:	Ester Holcman, Agriculture College, Luiz de Queiroz Universidade de Sao Paulo, Piracicaba, Sao Paulo, Brazil; Paulo Cesar Sentelhas, Agriculture College, Luiz de Queiroz Universidade de Sao Paulo, Piracicaba, Sao Paulo, Brazil; MARCO ANTONIO FONSECA CONCEICAO, CNPUV; Hilton Thadeu Zarate Couto, Agriculture College, Luiz de Queiroz Universidade de Sao Paulo, Piracicaba, Sao Paulo, Brazil.
Date Issued:	2017
Citation:	International Journal of Biometeorology, [online] p. 1-13, May 2017.
Description:	The use of plastic cover in vineyards minimizes effects of adverse weather conditions. The northwest of São Paulo State is one of the largest grape producing regions in Brazil; however, few studies investigate the effects of different plastic covers on vineyards in this region. This study compared the effect of black shading screen (BSS) and braided polypropylene film (BPF) on BRS Morena vineyard microclimate, grown on an overhead trellis system in the northwestern São Paulo. The experiments were carried out during three growing seasons (2012 ? 2014). BSS allowed superior incoming solar radiation (SR) transmissivity, resulting in higher net radiation (Rn), and higher ratio between photosynthetically active (PAR) and SR. No differences were observed between the average air temperatures (T) and relative humidity (RH) of covered environments (BPF and BSS) and outside condition (automatic weather station ? AWS), due to high air circulation, despite wind speed (WS) reduction caused by plastic covers. BPF provided better conditions for vineyard growth with higher fruit yield than vineyard under BSS regarding the number of shoots with bunches per plant, bunch and stem weights, longitudinal diameter of berries, quantity of fertile buds per shoot, and yield per shoot and per plant. BPF covers also influenced leaf size and growth speed of plants in vineyards. Keywords Black shading screen . Braided polypropylene film . BRS Morena . Leaf wetness duration . Yield
Thesagro:	Uva Viticultura
Keywords:	Black shading screen Braided polypropylene film BRS Morena Leaf wetness duration Vineyard Grape Plastic covers Uvas do Brasil
Type of Material:	Artigo de periódico
Access:	openAccess
Appears in Collections:	Artigo em periódico indexado (CNPUV)