At this time, most vineyards are in bloom with specific grape varieties being at different stages of bloom. Bloom in grape (Figure 1) is somewhat […]

After last week’s extremely warm weather, grapevines got enough heat to break bud and we are already seeing 2 to 3 inches of growth on […]

Welcome back to the Wisconsin Fruit Newsletter! As we enter another growing season, I’ve received several inquiries about making lime sulfur applications to dormant vines […]

As we enter February, our thoughts begin to think of the warm and sunny days ahead this spring. Before we know it, May will be […]

Case study. In mid-July of this year, I received a call from a grape grower about symptoms of decline in several Marquette vines. The vines […]

Phenology Crimson Pearl and Petite Pearl were the last cultivars harvested at the West Madison Research Station (WMARS) on September 20.  See Table 1 for […]

Phenology The berries of all cultivars at West Madison Research Station (WMARS) are harvest-ripe (stage 38). See Table 1 for veraison (beginning of berry color […]

Berry Ripening Parameters for Red Wine Cultivars at WMARS Below are graphs showing the progression of the berry ripening parameters at WMARS: % total soluble […]

I have received several emails from growers regarding ranges of fruit quality parameters for cold climate grape cultivars. Several years ago, I published an extension […]

Phenology The berries of all cultivars at West Madison Research Station (WMARS) are either not quite ripe (E-L* Stage 37) or are harvest-ripe (stage 38). […]