Comportamiento agronómico de variedades de promisorias de Vitis vinífera L. y de variedades "PIWI" resistentes a Mildiu y Oidio, en el sur de Uruguay

The production of grape is one of the most demanding agronomics activities in the aplication of funguicide. With the goal of dismish the utilization of those in Europe they developed hybrids herbage of vine to fungic diseases named PIWI, with strong ascendancy to Vitis vinífera. In this job it was evaluated the agronomic behaviour of eight of them, Fleurtai, Sauvignon Kretos, Sauvignon Nepis, Sauvignon Rytos, Soreli, Cabernet Volos, Julius, UD 72-096. Besides, it was evaluated the varieties already introduced in the national vineyard and promising european varieties with the objective of intoduce them in the national viticulture. The essays are found in the zone of Canelones, Uruguay in a property that belongs to the experimental camp of INIA of Witches, during the harvest of 2019-2020. In the investigation it was made a phenological tracing per week of all the varieties, by way of use it as a reference with the phenological development of the varieties already introduced and studied in our country. It was also analyzed the composition of Berry, vigor and level of incidence and severity to diseases in the variants indicated as resistents, in witch monitoring was done per week. The results obtained in this job pretend to made an approach to the agronomic behaviour of the promissory varieties to the weather conditions of our country and not achieve definitve conclusions since it was about herbage in the second year of growing. The results obtained allowed to obtain an approach in the phenological development of the promisory variants, which are found in 3 differentiated groups, obtaining a phenological development of Julius and Fleuratai varieties similar to the Tannat variety. The monitoring in the varieties indicated as resistan to the Plasmospara vitícola disease obtained a resulto f 0% in incidence and severity of the leaf.