This week, and for the rest of the summer, we have pictures from the Peninsular Agricultural Research Station (PARS), as well as from West Madison Agricultural Research Station (WMARS). As you might expect, buds at PARS are behind (bud swell to late bud swell) the buds at WMARS (1- to 2- leaves completely separated from shoot tip). This difference in bud development is reflected by the growing degree day (GDD) accumulations in each location: 278 GDD at WMARS, 138 in Sturgeon Bay, near PARS. Degree days are calculated using a base of 50°F.

Following photos taken on May 10^th at West Madison Agricultural Research Station.

• 

• 

Following photos taken on May 11^th at the Peninsular Agricultural Research Station.

This article was posted in Grapes, WFN, Vol. 1-4 and tagged Annie Deutsch, grape developmental stages, Grapes, Janet van Zoeren, table grape, wine grape.