Weed control and identification
FIELD TRIALS – WEED CONTROL
Timing of herbicide applications
Effect of leaf litter on the efficacy of treatments
New organic herbicides with organic growers
If you have a question or a concern related to weed management, vineyard or orchard floor management, or need assistance in the identification of a weed species, please call or e-mail me.
UC Master Gardeners of Napa County are available to assist homeowners with weed questions.
John A Roncoroni
Title: Weed Science Farm Advisor
Specialty: Weed Control and Vegetation Management in Perennial Crops, Covercrops and Aquatic and Riparian Weed Control
UC Cooperative Extension
1710 Soscol Avenue
Napa, CA 94559-1315
Phone: (707) 253-4221