The objective of these evaluations is to identify selections among the Zinfandel Heritage Collection that will improve the quality of Zinfandel wines. Selections were made from a wide geographic area of the state; thereby increasing the possibility of finding selections that distinguish themselves. Viticultural and enological evaluations for the selections began in 1998 and have continued annually through 2004. Data from 2004 will not be generated since all of the vines suffered from symptoms similar to potassium deficiency which confounded all of the experimental variables of interest.
