 The main plantings have been, so far, Pinot Noir, Chardonnay, Sauvignon Blanc, Gewürztraminer, Merlot, Riesling and Pinot Gris.Argentine winemakers have long held the belief that vines required hot and arid climates with large temperature variations to produce quality wines.This 'winning formula' led to a concentration of wineries in Mendoza, San Juan and La Rioja provinces in the west, as well as higher-altitude vineyards in Salta.