Vine Mealybug Control in Grapes
COLLABORATORS: Jennifer Hashim, UCCE Kern Co.; Steven J. Castle, USDA-ARS
Table grape growers manage VMB through a combination of chemical and biological controls. Common treatments include chlorpyrifos prior to budbreak, buprofezin in the spring, imidacloprid through the drip system around bloom, spirotetramat during the late spring through early summer, and in some cases mid to late season applications of foliar neonicotinoids. Use of these products has usually been successful at maintaining low mealybug populations. However, regulatory scrutiny over several products poses risks to future control via insecticides.
Mating disruption (MD) is a relatively new technique that has the potential to improve integrated pest management programs for VMB. MD is considered a green, sustainable, alternative to traditional insecticides and does not have issues with maximum residue limits, pre-harvest intervals, or tolerances. It works by inhibiting the ability of male VMB to find females by inundating the vineyard with artificially-synthesized VMB pheromone. If males fail to find and mate with females, no offspring are produced. By this mechanism, MD does not kill mealybugs, but prevents egg hatch.
Vine Mealybug Control in Grapes Documents
- 2012 Managing vine mealybug in wine grapes
- 2011 AMT VMB in Red Globes
- 2010 AMT VMB Flames
- 2010 AMT VMB Autumn Royal
- 2009 Maximizing Vine Mealybug Control with the Right Product at the Right Time
- 2008 In-Season control of Vine Mealybug in Early-Season Table Grapes (188K pdf)
- 2008 In-Season control of Vine Mealybug in Late-Season Table Grapes (276K pdf)
- 2008 Late Season Approaches to Vine Mealybug near Harvest in Table Grapes (24 K pdf)
- 2007-2008 Post-harvest Vine Mealybug Treatments Evaluated in Kern County Table Grapes (32K pdf)