In 2022, the PDDC continues to provide diagnoses through examination of digital photographs, as well as physical samples.  Click here for the PDDC’s current submission […]

In 2022, the PDDC continues to provide diagnoses through examination of digital photographs, as well as physical samples.  Click here for the PDDC’s current submission […]

This year we started an exciting new project to evaluate several seedless table grape cultivars and some new selection from the UMN cold climate grape […]

There are two recommended timing for petiole sampling, at bloom, or now during veraison. Here are some brief recommendations to collect the sample: Divide the […]

In 2022, the PDDC continues to provide diagnoses through examination of digital photographs, as well as physical samples.  Click here for the PDDC’s current submission […]

Marquette grapes are at buckshot. Zestar are about 4cm in diameter. Cortland and Honeycrisp are about 3cm in diameter. Montmorency cherries are pink turning orange.

Zestar is at about 30mm. Cortland and Honeycrisp are both at about 20mm with good fruit set. Marquette is at post bloom and approaching buckshot. […]

The first Japanese beetle adults (Figure 1; JB) were found as part of our research at a vineyard near Dane county. Emergence has just begun […]

While walking through your vineyard, you might notice yellow spotting on leaves (Figure 1) and we’ve begun to see it in the vineyards at the […]

Zestar is approaching 12mm. Honeycrisp and Cortland are around 10mm. Marquette and Itasca are between 10-14” of growth. Montmorency are out of the shuck and […]