Program Focus
PERENNIAL CROPS
Weed control and identification
Vegetation management
Covercrop information
FIELD TRIALS – WEED CONTROL
Timing of herbicide applications
Effect of leaf litter on the efficacy of treatments
New organic herbicides with organic growers
Weed Control - North Coast Video
John Roncoroni (retired)
UC Weed Science Farm Advisor
Addresses Weed Control in the North Coast
From American Vineyard Magazine
Questions?
Please contact UC Master Gardeners of Napa County They are available to assist homeowners with weed questions.
Newsletters
Napa Weed Management Area Newsletters
Wines & Vines Article - 7/22/14
UC Weed Science Farm Advisor, John Roncoroni details results of vineyard studies in the current issue of Wines & Vines. Read the article, "The Efficacy of Weed Killers" written by Paul Franson.
Update - Latest Field Ratings
Read the details of field trial - plots were treated on February 5, 2014.
Read the update on the latest field ratings.
2013 Weed Control Trial
Read the test results of a 22-treatment herbicide weed control trial conducted in Napa County in 2013.
New Weed Management Book
