Home Industry News Pest/Disease Management (page 9)

Pest/Disease Management

Red Blotch Detected on Russell Ranch Grapevines

20-Dec-17 Deborah Golino, Director: Foundation Plant Services On December 20, 2017, Foundation Plant Services (FPS) announced that Grapevine Red Blotch Disease, caused by Grapevine red blotch virus (GRBV), has been found in the Russell Ranch Vineyard (RRV). All affected vines (only five of 4,132 vines in RRV tested positive for GRBV) have been removed and destroyed. FPS is carefully monitoring …

Mealybug Management – In or Out of Sync

UC IPM Advisor David Haviland recently shared some tips on mealybug control. The goal is to lower mealybug populations, prevent movement, protect the cluster and keep the vines compatible for biocontrol (especially postharvest). Some insecticides effective against vine mealybug include: Chlorpyrifos (delayed-dormant treatment), Buprofezin (best against crawlers), Spirotetramat (foliar applied/systemic in the phloem and xylem), and Neonicotinoids (some soil, some …

USDA-ARS Oregon Perspective on Managing Powdery Mildew

What the mildew? A perspective on another challenging year managing powdery mildew Dr. Walt Mahaffee, Research Plant Pathologist, USDA-ARS Horticulture Crops Research Unit There has been a lot of talk this season about powdery mildew pressure that has been difficult to manage. It might be easy to write off mildew management problems to fungicide resistance, since both FRAC 3 (DMI) …

Best Practices with Doug Gubler for Preventing Trunk Diseases in Grapevines

As a throwback from American Vineyard’s Central Coast Grape Expo last year, now is the time to prepare our vineyards with the right tools to prevent trunk diseases from spreading in the vineyard. Watch this interview with international expert and emeritus Plant Pathologist at UC Davis Doug Gubler who shared some great insights.

1...789Page 9 of 9