Viticulture Publications

Collecting Grape Petioles for Tissue Analysis
Prepared by: Dr. Paul Domoto, Dept. of Horticulture (July 2011)
Iowa State University, University Extension

Composition of Grapes - Grapes are the most important raw material for making wine. A good understanding of grape composition is essential to understanding the process of winemaking and making better quality wine. Text by Murli Dharmadhikari, Iowa State University. (PDF)

General Use Vineyard Scouting Form (PDF)

Wine Grape Cultivar Trial Performance in 2006 - To assess the regional adaptation of wine grape cultivars to Iowa, a trial was established in 2003 through an Iowa Department of Agriculture and Land Stewardship (IDALS) specialty crops grant awarded to the Iowa Wine Growers Association. (PDF)

When Are the Grapes Ripe? - The optimum time to harvest grapes depends on the growing season, site, crop load, cultivar and intended use. The lighter the crop load, the quicker the ripening process. The timing of the harvest season will vary each year depending on environmental conditions. (PDF)

Grape Cultivar by Management System Trial Performance in 2006
 - To identify grape cultivars adapted to Iowa, a cultivar by management system trial was established in 2002 at the ISU Horticulture Research Station (HRS) and the ISU Armstrong Research Farm (ARP) with the help of a grant from the Leopold Center of Sustainable Agriculture. (PDF)

Sources of Information - All types of information on Viticulture (PDF)

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