Cultivares de videiras submetidas aos sistemas de condução fio único e espaldeira na região do Vale do Rio do Peixe – SC

Abstract

The choice of cultivars and management systems are part of the most important steps in the implementation of a vineyard and impact on its management, whether phytotechnical or phytosanitary, with interference in the nutritional composition and balance of vegetative and productive factors of the vines. With the lack of manpower for viticultural management, systems adapted to mechanization and cultivars with better agronomic performance are sought. The objective of this study was to verify the performance of different cultivars of American and hybrid vines conducted in espalier and single-thread vineyard located in the municipality of Videira, Santa Catarina, in the 2019/20 cycle. The vineyard was implanted in 2015, with a spacing of 3.0 x 1.5 meters between rows and between plants, using the VR 043-43 rootstock. conduction and 5 cultivars) with four replications, each one composed of four plants. The management systems were espalier and single thread and the cultivars Isabel precocious, Concord clone 30, Bordô, BRS Carmem and BRS Magna. The trellis conduction system presents higher values of PAR radiation, both in the height of the bunches and in the vegetative canopy compared to the single wire. The Bordo cultivar presented higher PAR radiation interception at the height of the bunches and canopy in relation to the other cultivars studied, however, the single strand presented soluble solids below the desired and the acidity in both systems was low. In addition, the pH values were shown to be high, especially for burgundy in espalier. The cultivar BRS Magna was the most productive, regardless of the management system. The chlorophyll index was not influenced by the conduction systems and cultivars studied. The highest number of bunches, bunch mass, production and productivity are observed in the single wire conduction system. All cultivars and management systems were within the desirable range for soluble solids/acidity ratio. It is concluded that for the region of Vale do Rio do Peixe - SC, the single wire conduction system presented better productive performance than the espalier, especially when related to the cultivar BRS Magna, being a mechanized alternative for the region.