AN ECONOMIC ANALYSIS OF PREVENTATIVE PRACTICES FOR MANAGING TRUNK DISEASE IN TABLE GRAPE VINEYARDS
MONDAY, APRIL 19, 2021. BY KENDRA BAUMGARTNER, PHD, USDA, JOHNATHAN KAPLAN, PHD, CSU SACRAMENTO, & MAX NORTON, PHD, CSU SACRAMENTO.
California is the nation’s leading grower and sole exporter of table grapes [California Department of Food and Agriculture, 2017], with over 99% of US commercial table grapes grown in California [California Table Grape Commission (CTGC), 2017]. In 2016, the state’s 85,166 bearing acres of commercial table grapes produced 939,294 metric tons of grapes, valued at $1.85 billion [CTGC, 2017; CTGC, 2016]. Most of this acreage is located in the southern San Joaquin Valley.
Trunk, or wood-canker diseases, including Botryosphaeria dieback, Esca, Eutypa dieback, and Phomopsis dieback, present a serious challenge to the productivity of vineyards of all types. The majority of California vineyards over age 10 are likely infected [Hillis et al., 2015]. Rain dur