Microclimate and quality of Niagara Branca e Niagara Rosada grapevine under different trellising systems and prunning dates at Jundiaí, SP

• Grant number: 08/05687-6
• Support type: Regular Research Grants
• Duration: October 01, 2008 - September 30, 2010
• Field of knowledge: Agronomical Sciences - Agronomy - Agricultural Meteorology
• Principal researcher: Mario Jose Pedro Junior
• Grantee: Mario Jose Pedro Junior
• Home Institution: Instituto Agronômico (IAC). Agência Paulista de Tecnologia dos Agronegócios (APTA). Secretaria de Agricultura e Abastecimento (São Paulo - Estado). Campinas , SP, Brazil

Abstract

The Jundiaí grape growing region has great economical importance for the State of São Paulo, Brazil, regarding grapes for "in natura" consumption. However, most of the crop growers had not been applying optimized techniques for increasing productivity and profit, such as autumnal pruning associated to different trellising systems. This project aims to evaluate the microclimate influence on the development and quality of 'Niagara Branca' e ' Niagara Rosada' vineyards in two pruning dates: August/15 (wet season during ripening) and January/15 (dry season), for three conduction systems: upward growth with unilateral cordon, 'Y' with plastic and 'Y' without plastic cover. The global radiation, air temperature, relative humidity, wind will be measured for microclimatic conditions and their relations with phenology, leaf area index, branch length and quality of grape bunch. The quality will be characterized by parameters as BRIX, total acidity and ratio at harvest and for three and six of days storaging. Also the project will have as objective the potential evaluation of leaf spectral characterization related to phenological phases and grape quality, serving as basis for future remote sensing studies in region. (AU)