by Darin Allred, Technical Sales Support, Arysta LifeScience
Mites can be among the most destructive pests in a vineyard. It may sound simple, but I always suggest to growers that while it’s difficult to predict what kind of infestations they will have, it pays to be prepared. Here are a few tips to master mites in your vineyard.
Benefit from beneficials
Think about steps to maintain beneficial populations and achieve good spray coverage with miticide applications when pest populations reach the treatment threshold level. A good predictor for mite infestations is looking at what insecticides you’re using early in the season to control other insects. For example, if you’re treating for grape vine mealybug, look at how those treatments are affecting the predator mites, sixspotted thrips and other predators of spider mites.
Pay special attention to applying selective miticides to maintain populations of beneficial insects and predator mites, which will help control spider mites later in the season. For miticide applications, maintaining good IPM practices and the populations of beneficials is important.
Scout early and scout often
Nothing can replace being proactive by diligently scouting the crop, determining your treatment threshold level and getting in early with your miticide treatment before a spider mite population explodes.
For example, the University of California Integrated Pest Management Program recommends scouting for spider mites after the first leaves emerge. When monitoring mites, note the presence of mite predators. Using a 10X or a 14X hand lens, note mites and mite predators. Threshold levels for mites and other insects, and recommendations for treatment, can be found on their website here.
Coverage is golden
Early sprays are key, and getting the timing right – earlier rather than later – is critical. Since mites populate underneath the leaves, they’re often shielded from the sprays. Applying miticides before the canopy gets too dense is one way to get around this.
Lowering the speed of the sprayer will help ensure better coverage. I always say that 2 mph is ideal. This will help reduce inadequate coverage resulting from the “leaf flagging” issue often experienced in spraying grapes, where the leaves are blown parallel to the miticide spray stream, like a flag in the wind, which can reduce the amount of product adhering to the bottom surfaces of the leaves.
Get more from your miticide
Arysta LifeScience provides miticides with the flexibility that growers need: quick knockdown, long-lasting control, and selectivity on beneficial insects and predator mites, all for excellent IPM compatibility.
VIGILANT® and ACRAMITE® Miticides provide the flexibility of controlling spider mites at all life stages while going easy on beneficial insects and predator mites. And since resistance management is a critical part of any IPM program, KANEMITE® Miticide offers a unique chemical subgroup for fast knockdown of all stages of spider mites, while also being easy on beneficial insects and predator mites. OMITE® Miticide features a unique active ingredient and fuming action to provide great coverage everywhere mites hide, and attack at every life stage. Its rainfastness and lasting control make it effective throughout the season.
At Arysta LifeScience, you can count on us for a complete line of grape protection and a staff dedicated to helping you master mites – or whatever pest issue you have – and keeping your vineyard going strong. Contact your retailer or Arysta LifeScience sales representative for additional information, or visit www.arysta-na.com.
OMITE is a restricted-use pesticide. Always read and follow label directions. ACRAMITE, OMITE, and VIGILANT are registered trademarks of an Arysta LifeScience Group Company. KANEMITE is a registered trademark of Agro-Kanesho Company, S.A. Arysta LifeScience and the Arysta LifeScience logo are registered trademarks of Arysta LifeScience Corporation. © 2018 Arysta LifeScience Group Company. SPC-17108